GoHealthcare Practice Solutions | MSK Specialty Procedure Library

Knee Arthroscopy

Diagnostic and Surgical Arthroscopy of the Knee: Coverage, Medical Necessity, Prior Authorization, Documentation, Coding, Reimbursement, and Denial Prevention

A comprehensive healthcare-operations reference for clinical, prior authorization, utilization management, coding, revenue cycle, ASC, hospital, and executive teams.

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Educational and operational reference only. Verify the live member-specific benefit, payer policy, delegated utilization-management criteria, Medicare requirements, current code sets, NCCI edits, authorization details, contractual terms, and site-of-service rules before treatment, scheduling, billing, or appeal activity. Authorization does not guarantee coverage or payment.

Procedure FamilyOrthopedic Surgery / Sports Medicine | Knee

ProcedureKnee Arthroscopy

Primary CPT Focus29870-29889 and related HCPCS codes, selected by the specific service performed

Coding Year2026

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Specialty Healthcare Operations Backed by Measurable Experience

25+ YearsHealthcare operations experience

500+Physicians and practice groups served

3.5M+Prior authorization requests reviewed, submitted, or processed

98%Company-reported approval rate

<1%Company-reported peer-to-peer rate

Company-reported performance metrics. Results vary by client, payer, specialty, case mix, documentation quality, contracted scope, and implementation. No individual outcome is guaranteed. Case Study Library: https://www.gohealthcarellc.com/case-studies.html

Procedure Navigation

Explore the Complete Knee Arthroscopy Guide

Use the grouped links below to move directly to clinical, payer, authorization, coding, reimbursement, denial-prevention, and operational content.

Clinical Foundation

• Overview
• Evidence at a Glance
• Procedure Overview
• Relevant Anatomy (High-Level Overview)
• Clinical Indications
• Patient Selection
• Contraindications
• Imaging Requirements
• Medical Necessity

Coverage and Authorization

• Conservative Treatment Requirements
• Medicare and CMS Coverage
• CMS WISeR Model Considerations
• Commercial Payer and Utilization Management Comparison
• Documentation Requirements
• Prior Authorization Workflow
• Common Prior Authorization Denials
• Appeal Strategies

Coding and Revenue Integrity

• Coding and Billing Overview
• Applicable CPT Codes
• HCPCS Level II Codes
• Common ICD-10-CM Diagnosis Codes
• Applicable Modifiers
• Place of Service and Ambulatory Surgery Center Considerations

Operations, Insights, and Resources

• Clinical Documentation Checklist
• Procedure Comparison
• Device Manufacturers and System Considerations
• GoHealthcare Clinical Insights
• GoHealthcare Leadership Perspective
• GoHealthcare Prior Authorization Insight
• GoHealthcare Case Study
• GoHealthcare Best Practices
• Common Mistakes
• Pearls and Pitfalls
• Frequently Asked Questions
• Key Takeaways
• Future Outlook
• References
• Reading Recommendations
• Related GoHealthcare Resources
• Recommended Downloads
• Educational Disclaimer, Terms of Use, and Limitations

Procedure Guide

Overview

Knee arthroscopy is a family of diagnostic and surgical services rather than a single procedure. The central operational issue is matching the requested sub-procedure to a clearly documented structural lesion, mechanical symptoms, physical examination findings, arthrosis severity, conservative-care history, payer policy, authorization scope, and final claim.

This page is designed for physicians, advanced practice providers, practice administrators, prior authorization teams, utilization management nurses, coding and revenue cycle professionals, ambulatory surgery centers, hospitals, and healthcare executives. It focuses on healthcare operations rather than procedural technique.

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Procedure Guide

Evidence at a Glance

One-page executive summary for physicians, prior authorization specialists, utilization management teams, and revenue cycle leaders.

Domain	Summary Position
Medicare National Coverage Determination (NCD)	NCD 150.9 - Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee (effective June 6, 2004). Establishes national non-coverage for three specific scenarios. All other arthroscopic knee indications remain at Medicare Administrative Contractor (MAC) discretion. No NCD governs meniscectomy, meniscal repair, ligament reconstruction, or synovectomy.
Medicare Local Coverage	Most MACs have no full LCD for knee arthroscopy. Coverage is administered through billing and coding articles operationalizing NCD 150.9 - for example A52369 (National Government Services), A54061, and A54063. Because criteria are not fully established, Medicare Advantage plans may apply internal medical policy under 42 CFR 422.101(b)(6).
CMS WISeR Model (new for 2026)	NCD 150.9 is a selected WISeR service. Effective for dates of service on or after January 15, 2026, Original Medicare beneficiaries in New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington are subject to AI-assisted prior authorization or pre-payment review for arthroscopic lavage and debridement of the osteoarthritic knee. This is the first time traditional Medicare has applied prior authorization to this procedure family.
Commercial Payer Coverage	Universally covered with conditions. Nearly every national payer and utilization management vendor applies a radiographic severity ceiling (Kellgren-Lawrence Grade 0-1 or 0-2 depending on payer), requires documented mechanical symptoms, requires imaging-clinical correlation, and requires a failed course of provider-directed non-surgical management.
Evidence Level	Strong evidence against arthroscopic debridement and lavage for degenerative knee disease (Moseley 2002; Kirkley 2008; FIDELITY; ESCAPE; Cochrane 2022; BMJ Rapid Recommendation 2017). Supportive evidence for arthroscopy in mechanically symptomatic, imaging-confirmed structural pathology in knees without advanced arthrosis - loose bodies, displaced or bucket-handle tears, locked knee, traumatic root tears, discoid meniscus, septic arthritis, and osteochondritis dissecans.
Image Guidance	Not applicable. Knee arthroscopy is a direct-visualization procedure. Intraoperative fluoroscopy is not routinely required and is not separately reportable as a matter of routine practice.
Prior Authorization	Required by virtually all commercial and Medicare Advantage plans. Frequently delegated to eviCore, Carelon, Evolent, Cohere, or TurningPoint. Newly required for Original Medicare in six WISeR states for the NCD 150.9 code set.
Conservative Therapy	Typically 3 months (12 weeks) of provider-directed non-surgical management. Some payers accept 6 weeks. Defined exceptions exist for locked knee, acute traumatic root tear or avulsion, acute displaced tear, loose body causing mechanical block, septic arthritis, and multi-ligamentous injury.
Diagnostic Block Requirements	Not applicable to this procedure.
Key Documentation Requirements	Weight-bearing radiographs with an explicit Kellgren-Lawrence grade; MRI or CT arthrogram report describing a tear that extends to the articular surface; at least two positive provocative examination findings; documented mechanical symptoms; dated conservative care log; a pain and function score; and an explicit medical necessity statement linking imaging to examination to symptoms.
Typical Approval Considerations	Approval turns on three things: (1) radiographic arthrosis at or below the payer's ceiling, (2) a structural lesion on advanced imaging that plausibly explains the mechanical symptoms, and (3) a complete, dated conservative care record. Denials are overwhelmingly driven by missing Kellgren-Lawrence grading and undocumented conservative care - not by clinical disagreement.

GoHealthcare Payer Intelligence Alert | Two changes that materially affect 2026 workflow

1. Original Medicare now has prior authorization for knee arthroscopy in six states. Under the CMS Wasteful and Inappropriate Service Reduction (WISeR) Model, NCD 150.9 services furnished to Original Medicare beneficiaries in New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington require either a prior authorization request or acceptance of pre-payment review. Practices in these states that historically scheduled Medicare knee arthroscopy without any authorization step must rebuild their front-end workflow.

2. eviCore CMM-312 moved to version 2.0.2025 with an effective date of March 7, 2026. The refreshed guideline tightened the diagnostic arthroscopy pathway, restructured the debridement and loose-body criteria around explicit imaging findings, and added named exception pathways for locked knee and acute traumatic root tears. Authorization templates written against the prior version will now under-document.

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Procedure Guide

Procedure Overview

Knee arthroscopy is a minimally invasive surgical procedure in which a fiberoptic camera is introduced into the knee joint through small portal incisions, allowing the surgeon to visualize the intra-articular structures and, through accessory portals, to treat identified pathology. It is among the highest-volume orthopedic procedures performed in the United States and is overwhelmingly delivered in the ambulatory surgery center and hospital outpatient department settings.

Operationally, the term knee arthroscopy is not a single procedure. It is a family of distinct services with materially different coverage positions, distinct medical necessity criteria, and different bundling behavior. A prior authorization request that says only "knee arthroscopy" will almost always be pended. The authorization must identify the specific intended procedure or procedures, because the reviewing entity applies criteria at the sub-procedure level.

Sub-Procedure Family	Representative Codes	Operational Coverage Posture
Diagnostic arthroscopy	29870	Narrow. Generally requires inconclusive advanced imaging plus objective examination findings. Payers increasingly consider it obsolete given modern MRI sensitivity.
Lavage and drainage for infection	29871	Broadly covered, including under Medicare. This is the CPT code CMS identifies as describing the service that remains covered under NCD 150.9.
Debridement / chondroplasty	29877, G0289	Highest-risk category. Non-covered by Medicare when performed for osteoarthritis. Considered not medically necessary for osteoarthritis by most commercial vendors.
Loose or foreign body removal	29874	Covered when a discrete loose body is confirmed on imaging and correlates with mechanical symptoms. Commonly excluded at Kellgren-Lawrence Grade 4.
Synovectomy, limited or major	29875, 29876	Covered for a defined list of synovial pathologies. Not covered when performed for exposure, visualization, or generalized joint "clean-up."
Partial or total meniscectomy	29880, 29881	Covered for symptomatic tears extending to the articular surface in knees without advanced arthrosis. The single most heavily scrutinized knee procedure in the country.
Meniscal repair	29882, 29883	Increasingly favored over meniscectomy. Generally covered for repairable tears, including acute traumatic root tears, in appropriate candidates.
Cartilage restoration	29866, 29867, 29879, 29885-29887	Covered under defect-size, age, body mass index, alignment, and containment criteria. Frequently requires named-procedure authorization.
Ligament reconstruction	29888, 29889	Covered for instability with imaging confirmation and positive stability testing. Addressed in the dedicated GoHealthcare ACL and PCL reconstruction guides.
Lysis of adhesions	29884	Covered for documented arthrofibrosis with objective motion loss after failed therapy. A designated CPT separate procedure.

The dominant operational reality of the last fifteen years is the sustained contraction of coverage for arthroscopy performed in the presence of osteoarthritis. Beginning with the CMS national non-coverage decision in 2004, and reinforced by a series of high-quality randomized trials and systematic reviews, payers have converged on a single organizing principle: arthroscopy is a structural intervention, not an arthritis treatment. Practices that internalize this principle and build their documentation around structural pathology rather than around pain achieve materially higher first-pass approval rates.

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Procedure Guide

Relevant Anatomy (High-Level Overview)

Limited to the anatomy required to understand indications, imaging correlation, coverage criteria, and compartment-based coding.

For coverage and coding purposes, the knee is treated as a three-compartment joint. Compartment identification is not an academic point - it is the single most important anatomic determinant of whether a second arthroscopic service is separately reportable.

Structure	Operational Relevance
Medial compartment	Medial femoral condyle, medial tibial plateau, medial meniscus. The most common site of degenerative tearing and of the arthroscopic partial meniscectomy denial.
Lateral compartment	Lateral femoral condyle, lateral tibial plateau, lateral meniscus. Site of discoid meniscus, which carries its own named payer criteria.
Patellofemoral compartment	Patella and trochlear groove. Governs chondromalacia, patellar instability, and lateral release indications. A distinct compartment for separate-reporting purposes.
Menisci	Fibrocartilaginous shock absorbers. Payers distinguish sharply between a tear that extends to the articular surface and degenerative fraying or intrasubstance signal change. Only the former supports meniscectomy or repair. Root attachments are treated separately, and an acute traumatic root avulsion is a recognized fast-track exception to conservative care requirements at multiple payers.
Articular cartilage	Graded intraoperatively by the Outerbridge classification and on MRI by the modified Outerbridge classification. Grade III-IV findings simultaneously support cartilage restoration procedures and, in the same knee, may defeat meniscectomy authorization. Both graders must appear in the record.
Cruciate ligaments	Anterior and posterior cruciate ligaments. Central stabilizers; reconstruction is authorized under separate criteria.
Collateral ligaments	Medial and lateral collateral ligaments, with the lateral structures forming part of the posterolateral corner. Generally extra-articular and not treated arthroscopically.
Synovium and plica	Synovial lining and embryologic plical folds. Symptomatic plica supports limited synovectomy; a plica noted incidentally does not.
Suprapatellar pouch and gutters	Common locations for loose bodies. Documentation of the specific location of a loose body strengthens both authorization and separate reporting of removal.

The compartment rule in one sentence: a second arthroscopic service is generally separately reportable only when it is performed in a compartment in which no other surgical service was performed, and the operative note must name that compartment explicitly for the claim to survive audit.

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Procedure Guide

Clinical Indications

The indications below reflect the convergence of specialty society guidance, current randomized evidence, and the operative criteria published by national utilization management vendors. They are organized by the strength of the coverage position rather than by anatomy, because that is how authorization decisions are actually made.

Strong and generally uncontested indications

• Septic arthritis of the knee requiring lavage, drainage, and debridement of infected tissue - the indication CMS explicitly preserves under NCD 150.9.
• Acutely locked knee with a mechanical block to motion attributable to a displaced bucket-handle meniscal tear, a displaced chondral flap, or an intra-articular loose body.
• Symptomatic intra-articular loose or foreign body confirmed on orthogonal radiographs, computed tomography, or magnetic resonance imaging.
• Acute traumatic meniscal root tear or root avulsion confirmed on MRI, where timely repair preserves hoop-stress function and delays the onset of arthrosis.
• Repairable peripheral or vertical longitudinal meniscal tear in a vascularized zone, particularly in younger and skeletally immature patients.
• Symptomatic discoid lateral meniscus confirmed on MRI, with saucerization or meniscectomy as clinically indicated.
• Osteochondritis dissecans lesion requiring drilling, fixation, or grafting.
• Retained hardware, fracture fragment, or foreign body producing mechanical symptoms.
• Arthrofibrosis with objectively documented motion loss after a failed course of supervised therapy.

Conditionally supported indications requiring careful documentation

• Symptomatic meniscal tear extending to the articular surface, correlating with examination findings, in a knee with Kellgren-Lawrence Grade 0-1 or Grade 0-2 arthrosis depending on the governing policy, after documented failure of conservative management.
• Symptomatic synovial pathology - plica syndrome, pigmented villonodular synovitis, synovial chondromatosis, crystalline or inflammatory arthropathy, Lyme synovitis, hemophilic synovitis, or recurrent hemarthrosis - with imaging confirmation.
• Unstable full-thickness chondral flap producing catching or locking, in the absence of diffuse arthrosis.
• Focal full-thickness cartilage defect meeting the size, containment, alignment, and body mass index criteria for microfracture, osteochondral grafting, or autologous chondrocyte implantation.
• Diagnostic arthroscopy where advanced imaging is genuinely inconclusive, objective examination findings persist, and non-surgical management has failed. Payers apply this pathway narrowly and several require six months of symptoms.
• Patellofemoral pathology meeting named radiographic thresholds for tilt, alta, sulcus angle, or tibial tubercle-trochlear groove distance.

Indications payers generally will not approve

• Arthroscopic lavage alone for the osteoarthritic knee.
• Arthroscopic debridement for an osteoarthritic patient whose presentation is knee pain only, without mechanical symptoms.
• Arthroscopic debridement or lavage in the presence of severe osteoarthritis.
• Partial meniscectomy for a degenerative meniscal tear in a knee with established arthrosis, where the tear is best understood as a feature of the arthritis rather than an independent lesion.
• Chondroplasty performed as a routine adjunct without documented unstable cartilage and correlating symptoms.
• Synovectomy performed to improve exposure or to "clean up" the joint during another procedure.
• In-office needle arthroscopy performed as a diagnostic substitute for MRI, which multiple national policies designate as not medically necessary or not managed.

GoHealthcare Clinical Insight | The word that decides the case

Across every national policy we work with, one phrase separates approval from denial in degenerative knee disease: mechanical symptoms. Not pain. Pain is assumed. The reviewer is looking for locking, catching, clicking, popping during weight-bearing, giving way, buckling, or a range of motion that is blocked. These must appear in the clinician's own words in the office note, dated before the authorization request, and they must be tied to a specific structural finding on imaging.

A note reading "patient has ongoing knee pain and wishes to proceed with arthroscopy" is a denial. A note reading "patient reports painful catching with stair descent and two episodes of true locking requiring manual reduction; MRI demonstrates a displaced medial meniscal flap tear extending to the inferior articular surface" is an approval. The procedure is identical. The documentation is not.

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Procedure Guide

Patient Selection

Patient selection for knee arthroscopy is best approached as a four-part test. Every national utilization management guideline we review is, structurally, some version of these four questions.

Selection Domain	What the Reviewer Is Looking For	Common Documentation Gap
1. Structural lesion	An imaging-confirmed lesion capable of causing the reported symptoms: a tear extending to the articular surface, a discrete loose body, an unstable cartilage flap, an impinging osteophyte, a discoid meniscus, or an osteochondritis dissecans lesion.	MRI impression states "degenerative signal" or "fraying" without confirming articular surface extension.
2. Symptom-lesion concordance	Symptoms and examination findings that map to the same compartment as the imaging finding, with documented mechanical symptoms and functional limitation affecting activities of daily living, instrumental activities of daily living, or occupational demands.	Medial joint line tenderness documented, lateral meniscal tear imaged, no explanation offered for the mismatch.
3. Arthrosis ceiling	A weight-bearing radiograph interpretation with an explicit Kellgren-Lawrence grade at or below the payer's threshold, and where MRI is used, a modified Outerbridge grade.	No weight-bearing films obtained, or films obtained without any grading language in the report or the surgeon's interpretation.
4. Failed conservative care	A dated log of provider-directed non-surgical management, typically physical therapy plus at least one additional modality, with a documented reevaluation showing no meaningful improvement.	Conservative care described in the aggregate ("failed conservative treatment") without dates, modalities, duration, or a documented reevaluation.

Favorable selection factors

• Acute or subacute onset with an identifiable inciting event.
• Kellgren-Lawrence Grade 0 or 1 on weight-bearing radiographs.
• Mechanical symptoms that are episodic, reproducible, and described in the patient's own terms.
• Two or more positive provocative tests - joint line tenderness, McMurray, Thessaly, Apley compression.
• Preserved alignment without significant varus or valgus deformity.
• Body mass index and comorbidity profile supporting a favorable recovery trajectory.
• Younger patient, repairable tear pattern, and vascularized tear zone where meniscal preservation is achievable.

Unfavorable selection factors

• Kellgren-Lawrence Grade 3 or 4 arthrosis, or diffuse modified Outerbridge Grade III-IV change.
• Insidious onset of diffuse pain without mechanical symptoms.
• Bipolar or "kissing" chondral lesions on opposing surfaces.
• Significant malalignment that has not been addressed.
• Untreated inflammatory arthropathy where medical management has not been optimized.
• Intra-articular corticosteroid injection within the recent preoperative window - several policies specify four weeks and joint replacement policies commonly specify six weeks; verify the governing policy, because this alone can defeat an otherwise approvable request.
• Active tobacco use where the planned procedure involves biologic healing such as meniscal repair or cartilage restoration.

GoHealthcare Prior Authorization Insight | Build the case in the office, not at submission

The most expensive failure mode in knee arthroscopy authorization is retroactive case-building. When the authorization coordinator receives the request and then goes hunting for a Kellgren-Lawrence grade, a conservative care log, or a mechanical symptom, the case is already compromised: the documentation will be assembled from memory, the dates will be soft, and any addendum will be visible to a post-payment auditor.

High-performing practices solve this at the point of care. The knee evaluation template prompts the surgeon for the Kellgren-Lawrence grade, the compartment, the specific mechanical symptom, and the conservative care start date at the first visit - long before surgery is contemplated. By the time the case is booked, the authorization packet already exists. In our experience this single workflow change is worth more to first-pass approval rates than any appeal strategy.

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Procedure Guide

Contraindications

Absolute contraindications

• Active skin infection, cellulitis, or open wound overlying the planned portal sites (distinct from intra-articular septic arthritis, which is itself an indication for arthroscopic lavage and drainage).
• Active systemic bacteremia in an elective setting.
• Uncorrected coagulopathy or bleeding diathesis that cannot be safely managed perioperatively.
• Medical instability precluding safe anesthesia.
• Ankylosed knee without a working joint space that would permit arthroscopic access.

Relative contraindications and coverage-defeating conditions

• Advanced tricompartmental osteoarthritis, where arthroplasty or continued non-surgical management is the appropriate pathway.
• Kellgren-Lawrence Grade 4 arthrosis, which several policies name as an explicit exclusion even for loose body removal.
• Neuropathic (Charcot) arthropathy of the knee.
• Rapidly progressive neurologic disease.
• Severe uncorrected malalignment where realignment osteotomy should be considered first.
• Recent intra-articular corticosteroid injection within the policy-specified window.
• Poorly controlled diabetes mellitus, active tobacco use, or morbid obesity where the planned procedure depends on biologic healing.
• Absence of a structural lesion on advanced imaging - the most common practical contraindication and the most common cause of denial.

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Procedure Guide

Conservative Treatment Requirements

Conservative care is the most frequently under-documented element of the knee arthroscopy authorization packet and the most frequently cited denial reason. Payers do not merely ask whether conservative care occurred; they ask what was delivered, by whom, for how long, and with what documented result.

The components payers expect

Component	Operational Expectation
Physical therapy	Formal therapy delivered by a qualified provider, or a supervised home program that includes a patient-specific plan, initial active instruction with return demonstration, and documented compliance. Several policies accept a documented exception where pain is so severe that therapy is not possible.
Pharmacologic management	Nonsteroidal anti-inflammatory drugs, analgesics, or adjunctive agents, absent contraindication. Document the agent, the duration, and the response.
Intra-articular injection	Corticosteroid injection where clinically appropriate. Record the date - it is used both as evidence of conservative care and as a preoperative timing constraint.
Activity modification and rest	Documented restriction from aggravating activities, bracing, or assistive device use, with a defined trial period.
Weight management	Where relevant, documented counseling and any measurable progress.
Reevaluation	A follow-up encounter documenting worsening or absence of meaningful improvement, performed close enough to the planned surgical date that the clinical picture would not be expected to have changed.

Duration expectations by governing policy

Reviewing Entity	Typical Requirement	Notable Exceptions
eviCore (CMM-312)	3 months of provider-directed non-surgical management for most indications; 6 months of symptom duration for stand-alone diagnostic arthroscopy	Waived for acute traumatic meniscal root tear or avulsion on MRI; meniscal tear with locked knee on examination; and mechanical locking, clicking, catching, or popping attributed to an intra-articular loose or foreign body
Carelon (Joint Surgery)	Varies by indication; commonly 6 to 12 weeks of physical therapy plus at least one complementary strategy	Shortened or waived pathways for acute traumatic presentations and defined structural emergencies
Evolent / NIA (CG-316)	Documented failure of conservative management with clinical correlation of subjective complaints to objective findings	Adds a distinct constraint: no intra-articular cortisone injection within four weeks of surgery
Aetna (CPB 0673)	Documented failure of conservative therapy as specified in the bulletin	Traumatic tears with significant symptoms follow a more direct pathway
UnitedHealthcare (Surgery of the Knee)	Conservative management consistent with the coverage rationale in the current policy	Acute traumatic and mechanical-block presentations
Original Medicare	No national conservative care mandate; contractor discretion applies to indications outside NCD 150.9	Under the WISeR Model, reviewers apply existing Medicare coverage policy - which for NCD 150.9 services means the non-coverage criteria are the operative test

GoHealthcare Best Practice | The conservative care ledger

Maintain a discrete, structured conservative care ledger in the chart rather than relying on narrative. At minimum capture: modality, start date, end date, number of visits or weeks, provider, and documented response. Attach it as a standalone page in every authorization submission.

This single artifact resolves the majority of pended cases without a peer-to-peer conversation, because the reviewer's most common request - "please provide documentation of conservative treatment" - is already answered in the initial packet.

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Procedure Guide

Imaging Requirements

Imaging is where most knee arthroscopy authorizations are won or lost. The reviewer is not evaluating image quality; the reviewer is evaluating whether the report language satisfies named criteria. A technically excellent study reported in vague terms will fail review.

Radiographs

• Weight-bearing views are mandatory in practice. Non-weight-bearing films systematically understate joint space narrowing and are routinely rejected as a basis for grading arthrosis.
• A standard series includes weight-bearing anteroposterior, lateral, and axial patellofemoral views; a posteroanterior flexion (Rosenberg) view materially improves detection of early joint space loss.
• An explicit Kellgren-Lawrence grade must appear in the radiology report or in the surgeon's own documented interpretation. Where the radiologist does not grade, the surgeon should provide a detailed description that can be correlated to the grading system - several policies expressly permit this.
• Radiographs should be described in terms of joint space narrowing, osteophytes, subchondral sclerosis, subchondral cysts, alignment, and the presence or absence of a radiopaque loose body.
• Most policies expect imaging obtained within the preceding twelve months.

Advanced imaging

• Magnetic resonance imaging is the reference standard for meniscal, chondral, and ligamentous pathology and is required by most policies before meniscal surgery.
• The report should state whether a meniscal tear extends to the articular surface. This exact distinction - surface-extending tear versus degenerative fraying or intrasubstance signal - is the criterion multiple national guidelines apply, and an ambiguous report will be read against the request.
• Where cartilage is at issue, a modified Outerbridge grade should be reported. Note that MRI is known to underestimate chondral defect size relative to arthroscopic findings; this is a documented and citable point in appeals involving cartilage restoration.
• Computed tomography arthrography is an accepted alternative where MRI is contraindicated or non-diagnostic, and is named as an acceptable modality in several guidelines.
• Where a loose body is the indication, orthogonal radiographs demonstrating a loose body within the tibiofemoral or patellofemoral joint space may satisfy the imaging criterion independently of MRI.

Report Language That Supports Approval	Report Language That Invites Denial
"Radial tear of the posterior horn of the medial meniscus extending to the inferior articular surface"	"Degenerative signal within the posterior horn of the medial meniscus"
"Displaced bucket-handle tear with fragment in the intercondylar notch"	"Complex appearance of the medial meniscus"
"Kellgren-Lawrence Grade 1 changes on weight-bearing views"	"Mild degenerative changes" with no grade and no weight-bearing views
"Unstable full-thickness chondral flap, medial femoral condyle, modified Outerbridge Grade IV, approximately 1.5 square centimeters"	"Chondral irregularity noted"
"Ossified loose body measuring 8 millimeters within the posteromedial gutter"	"Possible intra-articular body"
"Acute avulsion of the posterior root of the medial meniscus with meniscal extrusion"	"Root region signal abnormality, clinical correlation advised"

GoHealthcare Clinical Insight | You are allowed to fix a vague report

Practices routinely accept an ambiguous radiology report as a fixed constraint. It is not. Two remedies are available and both are legitimate. First, request a radiology addendum where the images support more specific language. Second, and more commonly, the operating surgeon documents an independent interpretation in the office note - naming the compartment, the tear pattern, the articular surface extension, and the Kellgren-Lawrence grade.

Multiple national guidelines expressly contemplate provider interpretation of radiographs where a graded radiology report is unavailable. Practices that use this pathway deliberately, rather than accidentally, convert a meaningful share of otherwise-pended cases into first-pass approvals.

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Procedure Guide

Medical Necessity

Framed for insurance approval rather than clinical theory alone.

Medical necessity for knee arthroscopy is demonstrated by assembling five linked elements. Reviewers evaluate the linkage, not the elements in isolation. A packet with all five elements present but unconnected will still generate a request for additional information.

1 A structural lesion identified on imaging that is capable of producing mechanical dysfunction.

2 Concordant symptoms - mechanical symptoms specifically, plus functional limitation quantified against activities of daily living, instrumental activities of daily living, or occupational demands.

3 Concordant physical examination findings localizing to the same compartment as the imaging abnormality.

4 Arthrosis severity within the payer's ceiling, established by a graded weight-bearing radiograph.

5 Documented failure of an adequate course of provider-directed conservative management, or a documented, policy-recognized exception.

Model medical necessity statement

Template | Adapt to the specific clinical facts; do not use verbatim

This 47-year-old patient presents with a six-month history of right knee pain accompanied by reproducible painful catching during stair descent and two discrete episodes of true mechanical locking, the second requiring manual reduction. Examination demonstrates medial joint line tenderness, a positive McMurray test, and a positive Thessaly test, with a 10-degree extension block. Weight-bearing radiographs obtained on [date] demonstrate Kellgren-Lawrence Grade 1 changes with preserved medial joint space. MRI obtained on [date] demonstrates a displaced flap tear of the posterior horn of the medial meniscus extending to the inferior articular surface, with the displaced fragment in the intercondylar notch. The patient completed twelve weeks of supervised physical therapy from [date] to [date], a six-week course of naproxen, activity modification, and an intra-articular corticosteroid injection on [date], with reevaluation on [date] documenting no meaningful improvement and progression of mechanical symptoms. The imaging findings, examination findings, and symptom pattern all localize to the medial compartment. Arthroscopic partial medial meniscectomy is recommended to address a displaced structural lesion producing mechanical block; this is not a procedure directed at osteoarthritis, and radiographic arthrosis is minimal.

Note the four features that make this statement work: dated conservative care, an explicit Kellgren-Lawrence grade, named mechanical symptoms, and an affirmative statement distinguishing the request from arthritis-directed surgery.

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Procedure Guide

Medicare and CMS Coverage

National Coverage Determination 150.9

CMS issued NCD 150.9, Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee, effective June 6, 2004, implemented through Change Request 3281 and Transmittal 14 dated June 10, 2004, and communicated to providers through MLN Matters article MM3281. The determination is codified at CMS Publication 100-03, Medicare National Coverage Determinations Manual, Chapter 1, Part 2, Section 150.9.

The NCD establishes national non-coverage for three specific scenarios and leaves everything else to contractor discretion. Understanding the precise scope of the non-coverage is essential, because it is frequently over-read by practices and under-read by staff.

Scenario	Medicare Position
Arthroscopic lavage used alone for the osteoarthritic knee	Nationally non-covered
Arthroscopic debridement for osteoarthritic patients presenting with knee pain only	Nationally non-covered
Arthroscopic debridement, or lavage with or without debridement, for patients presenting with severe osteoarthritis	Nationally non-covered
Debridement in patients without severe osteoarthritis who present with symptoms in addition to pain	Medical necessity determination is at the discretion of the Medicare Administrative Contractor
Arthroscopy for infection - lavage and drainage (CPT 29871)	CMS identifies this as the code describing the service that remains covered under NCD 150.9
All other arthroscopic knee indications - meniscectomy, meniscal repair, synovectomy, ligament reconstruction, cartilage restoration	Not addressed by any NCD. Contractor discretion applies

The clinical anchor CMS references in the surrounding policy discussion is the American College of Rheumatology framework for diagnosing knee osteoarthritis, which combines knee pain with a defined set of clinical and laboratory features including age over 50, morning stiffness of less than 30 minutes, crepitus on active motion, bony tenderness, bony enlargement, absence of palpable synovial warmth, and specified erythrocyte sedimentation rate, rheumatoid factor, and synovial fluid findings.

Local coverage documents

• A52369 - Billing and Coding: Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee - Medical Policy Article, National Government Services. Reiterates the NCD non-coverage instruction and provides coding and billing guidance.
• A54061 and A54063 - parallel billing and coding articles issued to update the provider community on NCD 150.9 coverage and to identify the associated code set.
• Most Medicare Administrative Contractors have no full Local Coverage Determination for knee arthroscopy, meniscectomy, or meniscal repair. This absence has a direct consequence for Medicare Advantage: because Medicare coverage criteria are not fully established, plans may apply internal medical necessity criteria, provided they follow the transparency and evidence requirements at 42 CFR 422.101(b)(6).

Practical Medicare operating rules

• Do not report a knee arthroscopy with a diagnosis code describing knee pain only where the clinical picture is osteoarthritis - this maps directly to the non-covered scenario.
• Where a service is expected to be non-covered under NCD 150.9, issue an Advance Beneficiary Notice of Noncoverage and append the appropriate modifier.
• For Medicare Advantage, confirm whether the plan is applying NCD 150.9 alone or layering internal criteria, and request the specific criteria set in writing at the point of denial.
• Retain the graded weight-bearing radiograph interpretation in the chart even for Medicare cases; it is the primary evidence that severe osteoarthritis was not the operative indication.

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Procedure Guide

CMS WISeR Model Considerations

New for 2026. Applies to Original Medicare beneficiaries in six states.

The Wasteful and Inappropriate Service Reduction (WISeR) Model is a six-year CMS Innovation Center model running from January 1, 2026 through December 31, 2031. It introduces prior authorization, supported by artificial intelligence and machine learning together with human clinical review, into Original Medicare for a defined set of services. Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee (NCD 150.9) is one of the selected services.

Model Element	Detail
Model period	January 1, 2026 through December 31, 2031 (six performance years)
States	New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington
MAC jurisdictions	New Jersey (JL), Ohio (J15), Oklahoma and Texas (JH), Arizona and Washington (JF)
Population	Original Medicare fee-for-service beneficiaries only. Medicare Advantage members are not affected by WISeR (though they remain subject to plan-level prior authorization)
Request acceptance	WISeR participants and MACs began accepting prior authorization requests January 5, 2026
Applicability	Services furnished on or after January 15, 2026
Sites of service	Hospital outpatient department (type of bill 13X), ambulatory surgery center (place of service 24), home (place of service 12), and office (place of service 11). Hospital inpatient services are excluded from the model.
Decision timeframes	72 hours for standard requests; 48 hours for expedited requests
Affirmation validity	Approximately 120 days - CMS illustrates that a request affirmed January 5, 2026 is valid for dates of service through May 4, 2026
Participation	Technically voluntary. Providers who do not submit a prior authorization request are subject to post-service, pre-payment review instead
Coverage impact	WISeR does not change Medicare coverage or payment criteria. Reviewers apply existing Medicare coverage policy. Beneficiary appeal rights are unchanged
Gold carding	CMS has signaled a gold-carding pilot for providers with consistent approval histories, targeted for mid-2026. Verify current status

The complete list of CPT and HCPCS codes subject to review is published in Appendix A of the WISeR Model Provider and Supplier Operational Guide. MAC prior authorization look-up tools also allow code-level verification. Because the code set is subject to change across performance years, GoHealthcare recommends a quarterly verification cycle rather than a one-time build.

GoHealthcare Leadership Perspective | What WISeR actually changes for an orthopedic practice

The strategic significance of WISeR is not the six states or the specific code list. It is that traditional Medicare has now demonstrated an operational pathway for prior authorization on outpatient surgical services, executed through algorithmic first-pass review. Organizations should plan on the assumption that the model expands in scope or geography rather than on the assumption that it remains a contained pilot.

The practical implications are three. First, the front-end workflow changes. Practices in the six states can no longer treat Medicare knee arthroscopy as an authorization-exempt service; scheduling, financial clearance, and surgical booking must all incorporate a new gate. Second, documentation structure now matters more than documentation volume. An algorithmic first-pass reviewer extracts discrete data elements; narrative that buries the Kellgren-Lawrence grade in paragraph four performs worse than a structured note that surfaces it. Third, gold carding creates a measurable financial incentive for documentation discipline. A practice with a clean approval history may be exempted from the review process entirely. That converts documentation quality from a compliance cost into an operating asset.

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Procedure Guide

Commercial Payer and Utilization Management Comparison

Synthesized operational guidance. Policy language is not reproduced. Always verify the version and effective date governing the specific member.

Utilization management vendor comparison

Vendor / Policy	Current Version and Date	Distinguishing Operational Features
eviCore by Evernorth CMM-312, Knee Surgery - Arthroscopic and Open Procedures	Comprehensive Musculoskeletal Management Guidelines V2.0.2025; Cigna-administered version effective March 7, 2026 (published December 11, 2025)	The most granular criteria set in the market. Applies a Kellgren-Lawrence Grade II ceiling to diagnostic arthroscopy, debridement, loose body removal, and meniscal procedures, with a named exception for locked knee. Requires at least two positive examination findings from a defined list for meniscal procedures. Requires three months of provider-directed non-surgical management, waived for acute traumatic root tear or avulsion and for locked knee. Designates in-office diagnostic arthroscopy, knee subchondroplasty, and focal resurfacing implants as not medically necessary or experimental. Treats manipulation under anesthesia as incidental to all arthroscopic knee procedures.
Carelon Medical Benefits Management Clinical Appropriateness Guidelines: Joint Surgery	Doc ID MSK02-1125.1, effective November 15, 2025, last review April 21, 2025. Annual-review updates announced effective September 19, 2026	Organizes criteria around a general clinical framework applied consistently across joints. Defines conservative management as physical therapy plus at least one complementary strategy. Defines significant pain as at least 3 out of 10 with documented impact on activities of daily living. Requires imaging within twelve months and expressly permits provider interpretation of radiographs where a graded radiology report is unavailable. Excludes synovectomy performed for exposure or visualization and excludes loose body removal at Kellgren-Lawrence Grade 4. Where other arthroscopy codes are authorized, requires a loose body to exceed cannula size (5 millimeters) or to require incision extension.
Evolent Health (National Imaging Associates) Clinical Guideline: Knee Arthroscopy, NIA CG 316 _ _	Verify the plan-specific implementation date; guideline originally dated November 2015 with subsequent annual revisions	States plainly that arthroscopic debridement with or without chondroplasty for knee osteoarthritis is not medically necessary. Requires clinical correlation of subjective complaints with objective findings and imaging. Applies a distinct preoperative constraint: no intra-articular cortisone injection within four weeks of surgery. Excludes subchondroplasty and in-office diagnostic arthroscopy from management. Publishes a utilization management matrix governing allowable billed groupings, which affects multi-code requests.
Cohere Health	Plan-specific; verify at the health plan level	Digital-first authorization platform emphasizing episode-level and care-pathway authorization rather than single-code review. Practices frequently obtain broader approval scope by submitting the anticipated procedure set with intraoperative contingencies described up front.
TurningPoint Healthcare Solutions	Plan-specific; verify at the health plan level	Surgical quality and utilization management vendor used by several regional and Medicare Advantage plans for musculoskeletal procedures. Emphasizes site-of-service appropriateness and implant selection alongside medical necessity.

National commercial payer comparison

Payer	Governing Policy	Operational Notes
Cigna Healthcare	Cigna Medical Coverage Policies - Musculoskeletal; CMM-312 developed by eviCore, effective March 7, 2026	Cigna administers knee surgery criteria through the eviCore CMM-312 guideline set. Refer to the Cigna CPT code list to confirm which procedures eviCore actually reviews for a given plan - inclusion of a code in the guideline code table does not by itself mean the code is under management.
UnitedHealthcare	Surgery of the Knee - Commercial and Individual Exchange Medical Policy, effective June 1, 2026; Joint Procedures for Medicare Advantage; state-specific Community Plan versions including a distinct New Jersey policy	Broad applicable code set spanning 29866 through 29889 plus 0737T, 27412-27447, G0428, J7330, and S2112. Maintains separate commercial, Medicare Advantage, and Medicaid community plan versions with differing criteria. For Oxford and certain arrangements, outpatient procedures may route through eviCore. Confirm the correct policy variant before submitting.
Aetna	Clinical Policy Bulletin 0673 - Knee Arthroscopy / Osteoarthritis of the Knee: Selected Treatments	Applies an explicit ceiling of Kellgren-Lawrence 0, 1, or 2 or modified Outerbridge Grade 0, 1, or 2 for arthroscopic knee surgery with or without partial meniscectomy or meniscal repair, together with significant knee pain plus mechanical symptoms, radiologic confirmation of the pathology, and failed conservative therapy. Distinguishes meniscal repair for root tears, which is addressed as medically necessary under criteria, from meniscectomy for root tears, which the bulletin lists among services not considered medically necessary. Also addresses subchondroplasty and medial knee implanted shock absorber devices.
Humana	Medical coverage policies for knee surgery; delegated arrangements vary by market	Verify whether the specific plan delegates musculoskeletal review to a vendor. Medicare Advantage products apply NCD 150.9 and, where criteria are not fully established, internal criteria consistent with 42 CFR 422.101(b)(6).
Elevance Health (Anthem) and affiliated Blue plans	Carelon Clinical Appropriateness Guidelines: Joint Surgery	Most Anthem and affiliated Blue plans delegate knee surgery review to Carelon. Watch the announced update cycle: guideline changes are published in advance through provider news bulletins with defined dates of service.
Blue Cross Blue Shield plans (independent licensees)	Plan-specific medical policy; several use MCG care guidelines or Carelon	Independent licensees vary materially. Some maintain proprietary knee arthroscopy policies; others adopt MCG or delegate to Carelon or eviCore. Build a plan-level matrix rather than assuming a national Blue position.
Medicaid managed care and state Medicaid	State-specific; several states publish standalone knee arthroscopy medical necessity guidelines and require prior authorization	State Medicaid criteria are frequently stricter than commercial criteria and may impose fee schedule limitations that render certain codes non-covered. Verify both medical necessity criteria and fee schedule inclusion.
Workers' compensation and auto/no-fault	State treatment guidelines and jurisdiction-specific utilization review	Causation documentation carries weight equal to medical necessity. Document the mechanism of injury, the temporal relationship, and the distinction between acute traumatic pathology and pre-existing degenerative change explicitly.

GoHealthcare Payer Intelligence | Where the payers genuinely disagree Most knee arthroscopy criteria are more similar than different. Four areas of real divergence are worth building into your workflow: bullet

The arthrosis ceiling. Aetna permits Kellgren-Lawrence Grade 2; eviCore requires the absence of Grade II or greater findings for several pathways. That is a one-grade difference that decides cases.

• Meniscal root tears. Aetna's bulletin treats meniscal repair for root tears as approvable under criteria while listing meniscectomy for root tears among non-covered services. eviCore treats acute traumatic root tear as an accelerated pathway waiving conservative care. Naming the intended procedure precisely therefore matters more for root tears than for any other lesion.
• Number of required examination findings. eviCore requires at least two positive findings from a named list for meniscal procedures; several other policies require only one. Documenting three costs nothing and satisfies all of them.
• The preoperative injection window. Evolent specifies four weeks; joint replacement policies commonly specify six weeks. Scheduling an injection without checking the window is an avoidable, self-inflicted denial.

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Procedure Guide

Documentation Requirements

The following elements should be present in the medical record before an authorization request is submitted. This list is derived from the intersection of the national guidelines reviewed for this guide and represents the practical superset that satisfies the largest number of payers with a single packet.

Core clinical documentation

• Symptom onset date, duration, and whether onset was traumatic or insidious
• Mechanism of injury where applicable, with date
• Pain score on a validated scale, recorded at intake and at reevaluation
• Explicit description of mechanical symptoms in the clinician's words - locking, catching, clicking, popping with weight-bearing, giving way, buckling, or motion block
• Functional impairment stated against specific activities of daily living, instrumental activities of daily living, or occupational demands
• Prior knee surgery on the ipsilateral and contralateral knee, with dates and procedures
• Relevant comorbidities: diabetes with most recent hemoglobin A1c, body mass index, tobacco use, anticoagulation, inflammatory arthropathy

Physical examination

• Range of motion in degrees, with any extension block quantified
• Presence or absence of effusion
• Joint line tenderness, with side and compartment specified
• McMurray test result
• Thessaly test result
• Apley compression test result
• Ligamentous stability testing: Lachman, anterior drawer, pivot shift, posterior drawer, posterior sag, valgus and varus stress
• Patellofemoral assessment where relevant: apprehension, glide, J-sign, patellar grind
• Gait, alignment, and quadriceps bulk or atrophy

Imaging

• Weight-bearing radiographs obtained within twelve months, with views specified
• Explicit Kellgren-Lawrence grade in the radiology report or the surgeon's documented interpretation
• MRI or computed tomography arthrogram report with the compartment, the structure, the tear pattern, and confirmation of articular surface extension where applicable
• Modified Outerbridge grade where cartilage pathology is at issue
• Loose body location and size where loose body removal is planned
• A statement of imaging-to-examination-to-symptom correlation

Conservative management

• Physical therapy: provider, start date, end date, number of visits or weeks, documented response
• Home exercise program with evidence of instruction and compliance where formal therapy was not used
• Medications: agent, dose duration, and response
• Intra-articular injections: agent and date - confirm the preoperative window is satisfied
• Activity modification, bracing, or assistive devices with duration
• Documented reevaluation showing worsening or absence of meaningful improvement
• Where conservative care was not appropriate, an explicit statement of why

Surgical planning and administrative

• Named intended procedure or procedures, with laterality and compartment
• Anticipated intraoperative contingencies, stated in advance
• Explicit medical necessity statement linking all elements
• Shared decision-making documentation, including discussion of non-surgical alternatives
• Site of service and the rationale where a hospital outpatient department is selected over an ambulatory surgery center
• Signed history and physical within the facility's required window
• Verified benefits, authorization requirement determination, and vendor identification

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Procedure Guide

Prior Authorization Workflow

End-to-end process from initial evaluation through scheduling.

Stage	Owner	Actions and Operational Standards
1. Initial evaluation	Physician / APP	Capture mechanical symptoms verbatim, pain score, functional impact, and full knee examination. Order weight-bearing radiographs. Initiate and date conservative management. Record the Kellgren-Lawrence grade at this visit, not later.
2. Conservative care period	Physician / APP / Therapy	Maintain the structured conservative care ledger. Confirm therapy notes are received into the chart rather than remaining at the therapy provider.
3. Reevaluation	Physician / APP	Document worsening or absence of meaningful improvement. Repeat the pain score. Order advanced imaging if not already obtained. Schedule the reevaluation close enough to the anticipated surgical date that the clinical picture would not be expected to change.
4. Surgical decision	Physician	Name the specific intended procedure and compartment. State intraoperative contingencies. Draft the medical necessity statement. Document shared decision-making.
5. Benefit and vendor determination	PA specialist	Verify eligibility and benefits. Determine whether the plan delegates review to eviCore, Carelon, Evolent, Cohere, or TurningPoint, or retains it internally. For Original Medicare in a WISeR state, determine whether the planned code is on the WISeR list. Identify the correct submission channel - vendor portal, plan portal, NaviNet, or MAC portal.
6. Packet assembly	PA specialist	Assemble in a fixed order: medical necessity statement first, then the conservative care ledger, then imaging reports, then the office notes, then therapy notes. Confirm every criterion in the governing guideline has a corresponding page in the packet.
7. Submission	PA specialist	Submit with the exact CPT codes anticipated, including contingent codes where the platform permits. Record the reference number, date, time, and the reviewing entity.
8. Pend management	PA specialist	Respond to additional information requests within 24 hours. Track the specific criterion cited rather than the general request.
9. Peer-to-peer	Physician + PA specialist	Where a peer-to-peer is offered, prepare a one-page brief: the criterion at issue, the record page that satisfies it, and the clinical argument. Schedule promptly - peer-to-peer windows are short and frequently non-extendable.
10. Determination and scheduling	PA specialist / Scheduling	Record the authorization number, the approved code set, the units, and the validity window. Confirm the surgical date falls inside the window. Communicate the approved code set to the operating room and the facility.
11. Post-operative reconciliation	Coding / Revenue cycle	Compare the operative note to the authorized code set. Where the procedure performed differs materially, initiate retrospective review or an authorization update per plan rules before the claim drops.

GoHealthcare Prior Authorization Insight | Authorize the contingency, not just the plan

Knee arthroscopy is uniquely exposed to intraoperative variance. A case authorized as a partial medial meniscectomy may reasonably become a meniscal repair, may require loose body removal from a second compartment, or may reveal a chondral flap requiring treatment. If only the primary code was authorized, the additional services are exposed.

The remedy is to build a standard contingency set into the request. Where the platform permits multiple codes, submit them. Where it does not, state the anticipated contingencies in the clinical narrative so the authorization record reflects them, and document in the operative note why the contingency was encountered. This is the single highest-yield change most practices can make to reduce post-service denials on knee arthroscopy.

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Procedure Guide

Coding and Billing Overview

Operational overview only. Fee schedules, payment rates, relative value units, and detailed revenue cycle analysis are addressed in the GoHealthcare Revenue Cycle Knowledge Center.

Knee arthroscopy coding is governed less by code selection than by bundling logic. The CPT descriptors themselves embed services that would otherwise be separately reportable, and the National Correct Coding Initiative adds a second layer of edits. Practices that lose revenue on knee arthroscopy generally do so in one of two ways: by unbundling services that are included by definition, or by failing to document the compartment detail that would have permitted legitimate separate reporting.

Six rules that govern most knee arthroscopy claims

1 Chondroplasty is included in the meniscectomy descriptors. CPT 29880 and 29881 both state that debridement or shaving of articular cartilage is included, in the same or separate compartments, when performed. Neither 29877 nor G0289 is reportable with 29880 or 29881 for the same knee.

2 Chondroplasty may be separately reportable with meniscal repair. When performed in a different compartment of the same knee, and no other reportable service is performed in that compartment, chondroplasty may be reported alongside 29882 or 29883. For Medicare Part B this is reported as G0289; for other payers, 29877 with an appropriate distinct procedural service modifier may apply, subject to payer policy.

3 G0289 exists because of Medicare-specific instruction. Since 2003 CMS has directed providers to use HCPCS G0289 rather than 29877 to report chondroplasty, or loose or foreign body removal, performed at the time of another surgical knee arthroscopy in a different compartment of the same knee. Because the descriptor says "at the time of other surgical knee arthroscopy," if chondroplasty is the only procedure performed, 29877 is the correct code for all payers.

4 29874 and 29877 are generally not reportable with other knee arthroscopy codes. National Correct Coding Initiative policy provides that loose or foreign body removal (29874) and chondroplasty (29877) shall not be reported with other knee arthroscopy codes in the 29866-29889 range, with defined exceptions applying to G0289.

5 Separate procedure designations bind. CPT 29875 (limited synovectomy) and 29884 (lysis of adhesions) carry the separate procedure designation. Neither should be reported with another arthroscopic procedure on the ipsilateral knee.

6 Loose body removal has a size and access threshold. Global service data guidance treats removal of loose or foreign bodies as included in the base procedure; separate reporting is supported where the body exceeds 5 millimeters and/or removal required a separate incision. Document the measurement and the access route.

Documentation that supports code selection

• The compartment in which each service was performed, named explicitly for every service reported.
• For synovectomy, whether the procedure was limited (one compartment, plica or shelf) or major (two or more compartments), with the compartments named.
• For meniscectomy, whether medial only, lateral only, or both menisci were treated.
• For loose body removal, the size in millimeters, the location, and whether a separate incision or portal extension was required.
• For chondroplasty, the compartment, the lesion grade, the approximate lesion size, and an affirmative statement that no other surgical service was performed in that compartment.
• Laterality, stated in the header and again in the procedure description.
• Where a diagnostic arthroscopy converted to a surgical arthroscopy, a clear description of the conversion.

Common coding and billing pitfalls

Pitfall	Consequence	Prevention
Reporting 29877 or G0289 with 29880 or 29881	Denial and potential unbundling exposure	Hard edit at the practice management system level; chondroplasty is inclusive to both meniscectomy codes by definition
Reporting 29876 (major synovectomy) when only one compartment was involved	Downcoding, denial, or audit finding	Require the operative note to name each compartment; 29875 applies to a single compartment
Using 29875 for cartilage debridement	Incorrect code selection	Synovectomy codes address synovium; cartilage debridement is 29877 or G0289
No compartment documentation	Loss of legitimate separate reporting or downcoding	Operative note template with a mandatory compartment field for each service
Reporting 29884 with another arthroscopic knee procedure	Denial under the separate procedure designation	Coder edit; lysis of adhesions stands alone on the ipsilateral knee
Missing or incorrect laterality modifier	Denial, and complication where bilateral or staged procedures are involved	Require RT or LT on every knee arthroscopy line
Diagnosis code describing knee pain only in an osteoarthritic Medicare patient	Maps directly to the NCD 150.9 non-covered scenario	Code the structural lesion; reserve pain-only codes for cases where that is genuinely the complete picture
Billing the performed procedure when a different procedure was authorized	Post-service denial and appeal burden	Post-operative reconciliation step before the claim drops

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Procedure Guide

Applicable CPT Codes

Descriptors below are abbreviated for readability. Always verify against the current CPT code set. CPT is a registered trademark of the American Medical Association.

Arthroscopic knee procedures

Code	Descriptor (abbreviated)	Operational Note
29870	Arthroscopy, knee, diagnostic, with or without synovial biopsy (separate procedure)	Separate procedure designation. Not reportable when a surgical arthroscopy is performed in the same knee. Narrow coverage; several policies require inconclusive advanced imaging plus objective findings
29871	Arthroscopy, knee, surgical; for infection, lavage and drainage	The code CMS identifies as describing the service that remains covered under NCD 150.9
29873	Arthroscopy, knee, surgical; with lateral release	For Medicare, chondroplasty performed with 29873 is reported as G0289 and must meet the separate compartment criterion
29874	Arthroscopy, knee, surgical; for removal of loose body or foreign body (e.g., osteochondritis dissecans fragmentation, chondral fragmentation)	Generally not reportable with other knee arthroscopy codes; size and separate-incision documentation governs
29875	Arthroscopy, knee, surgical; synovectomy, limited (e.g., plica or shelf resection) (separate procedure)	Separate procedure designation. Single compartment
29876	Arthroscopy, knee, surgical; synovectomy, major, two or more compartments	Requires two or more named compartments. Not reportable when performed to clean up a joint on which a more extensive procedure is performed
29877	Arthroscopy, knee, surgical; debridement/shaving of articular cartilage (chondroplasty)	Never with 29880 or 29881. May accompany 29882 or 29883 in a different compartment. Medicare uses G0289 in that scenario
29879	Arthroscopy, knee, surgical; abrasion arthroplasty (includes chondroplasty where necessary) or multiple drilling or microfracture	Cartilage restoration criteria apply, including defect size and containment
29880	Arthroscopy, knee, surgical; with meniscectomy (medial AND lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed	Both menisci. Chondroplasty inclusive by definition
29881	Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed	One meniscus. The highest-volume and most heavily reviewed knee code
29882	Arthroscopy, knee, surgical; with meniscus repair (medial OR lateral)	Repair rather than resection. Chondroplasty in a different compartment may be separately reportable
29883	Arthroscopy, knee, surgical; with meniscus repair (medial AND lateral)	Both menisci repaired
29884	Arthroscopy, knee, surgical; with lysis of adhesions, with or without manipulation (separate procedure)	Separate procedure designation. Not with other arthroscopic knee procedures, same knee
29885	Arthroscopy, knee, surgical; drilling for osteochondritis dissecans with bone grafting, with or without internal fixation (including debridement of base of lesion)	Osteochondritis dissecans pathway
29886	Arthroscopy, knee, surgical; drilling for intact osteochondritis dissecans lesion	Intact lesion
29887	Arthroscopy, knee, surgical; drilling for intact osteochondritis dissecans lesion with internal fixation	Intact lesion with fixation
29866	Arthroscopy, knee, surgical; osteochondral autograft(s) (e.g., mosaicplasty) (includes harvesting of the autograft[s])	Cartilage restoration criteria apply
29867	Arthroscopy, knee, surgical; osteochondral allograft (e.g., mosaicplasty)	Cartilage restoration criteria apply
29868	Arthroscopy, knee, surgical; meniscal transplantation (includes arthrotomy for meniscal insertion), medial or lateral	Meniscal allograft transplantation criteria apply, commonly including age and body mass index thresholds
29888	Arthroscopically aided anterior cruciate ligament repair/augmentation or reconstruction	Addressed in the GoHealthcare ACL Reconstruction guide
29889	Arthroscopically aided posterior cruciate ligament repair/augmentation or reconstruction	Addressed in the GoHealthcare PCL Reconstruction guide
29850 / 29851	Arthroscopically aided treatment of intercondylar spine and/or tuberosity fracture(s), without / with fixation	Fracture pathway

Code	Descriptor (abbreviated)	Operational Note
29855 / 29856	Arthroscopically aided treatment of proximal tibial (plateau) fracture, unicondylar / bicondylar	Fracture pathway

Related open knee procedures frequently reviewed under the same policy

Code	Descriptor (abbreviated)
27331	Arthrotomy, knee; including joint exploration, biopsy, or removal of loose or foreign bodies
27332 / 27333	Arthrotomy with excision of semilunar cartilage (meniscectomy), knee; medial OR lateral / medial AND lateral
27334 / 27335	Arthrotomy with synovectomy, knee; anterior OR posterior / anterior AND posterior including popliteal area
27403	Arthrotomy with meniscus repair, knee
27405 / 27407 / 27409	Repair, primary, torn ligament and/or capsule, knee; collateral / cruciate / collateral and cruciate
27412	Autologous chondrocyte implantation, knee
27415 / 27416	Osteochondral allograft, knee, open / osteochondral autograft(s), knee, open
27425	Lateral retinacular release, open
27570	Manipulation of knee joint under general anesthesia

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Procedure Guide

HCPCS Level II Codes

Code	Descriptor (abbreviated)	Operational Note
G0289	Arthroscopy, knee, surgical, for removal of loose body, foreign body, debridement/shaving of articular cartilage (chondroplasty) at the time of other surgical knee arthroscopy in a different compartment of the same knee	The single most important HCPCS code in knee arthroscopy. Medicare-specific instruction directs its use in place of 29877 when chondroplasty is performed in a different compartment during another surgical knee arthroscopy. Never reportable with 29880 or 29881. If chondroplasty is the only procedure performed, use 29877 instead
G0428	Collagen meniscus implant procedure for filling meniscal defects	Appears on several commercial knee surgery policy code lists. Coverage varies materially; verify before scheduling
J7330	Autologous cultured chondrocytes, implant	Product code associated with autologous chondrocyte implantation. Distinct medical necessity criteria including age, body mass index, defect size, containment, and alignment requirements apply
S2112	Arthroscopy, knee, surgical for harvesting of cartilage (chondrocyte cells)	Temporary national code recognized by some commercial payers; not payable by Medicare
C-codes and device pass-through	Facility-billed device codes vary by setting and year	Applicable to the facility claim rather than the professional claim. Confirm the current outpatient prospective payment system status annually

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Procedure Guide

Common ICD-10-CM Diagnosis Codes

Coder verification required. Several parent codes in this family are non-billable and require additional characters for meniscus, laterality, and encounter. The codes below are current for the fiscal year 2026 ICD-10-CM update effective October 1, 2025. Confirm laterality and full specificity against the current code set before submission.

Chronic and degenerative internal derangement

Code Family	Description	Specificity Requirement
M23.2-	Derangement of meniscus due to old tear or injury	M23.2 alone is not billable. Requires six characters encoding the specific meniscus and laterality - for example M23.203 (unspecified medial meniscus, right knee), M23.204 (unspecified medial meniscus, left knee), M23.206 (unspecified meniscus, right knee), M23.239 (other medial meniscus, unspecified knee)
M23.3-	Other meniscus derangements	Six characters required, following the same meniscus-plus-laterality pattern
M23.4-	Loose body in knee	M23.4 alone is not billable. Use M23.40 (unspecified knee), M23.41 (right knee), or M23.42 (left knee)
M23.5-	Chronic instability of knee	M23.5 alone is not billable. Use M23.50, M23.51 (right), or M23.52 (left)
M23.6-	Other spontaneous disruption of ligament(s) of knee	Six characters required identifying the specific ligament and laterality
M23.8X-	Other internal derangements of knee	Requires the X placeholder plus laterality: M23.8X1 (right), M23.8X2 (left), M23.8X9 (unspecified)

Cartilage, patellofemoral, and synovial conditions

Code	Description
M22.40 / M22.41 / M22.42	Chondromalacia patellae, unspecified / right / left knee
M22.2X1 / M22.2X2 / M22.2X9	Patellofemoral disorders, right / left / unspecified knee
M22.01 / M22.02	Recurrent dislocation of patella, right / left knee
M22.11 / M22.12	Recurrent subluxation of patella, right / left knee
M67.50 / M67.51 / M67.52	Plica syndrome, unspecified / right / left knee
M12.261 / M12.262 / M12.269	Villonodular synovitis (pigmented), right / left / unspecified knee
M71.21 / M71.22	Synovial cyst of popliteal space (Baker's cyst), right / left knee
M93.261 / M93.262 / M93.269	Osteochondritis dissecans, right / left / unspecified knee
M94.261 / M94.262	Chondromalacia, right / left knee
M24.261 / M24.262	Disorder of ligament, right / left knee

Osteoarthritis of the knee - use with care

Code	Description	Coverage Implication
M17.0	Bilateral primary osteoarthritis of knee	Signals the NCD 150.9 non-covered pathway when paired with debridement or lavage codes
M17.11 / M17.12	Unilateral primary osteoarthritis, right / left knee	Same caution. Where an independent structural lesion is the operative indication, code the structural lesion as the primary diagnosis
M17.2	Bilateral post-traumatic osteoarthritis of knee	As above
M17.31 / M17.32	Unilateral post-traumatic osteoarthritis, right / left knee	As above
M17.4 / M17.5	Other bilateral / unilateral secondary osteoarthritis of knee	As above
M17.9	Osteoarthritis of knee, unspecified	Avoid. Unspecified codes invite both denial and audit attention
M25.561 / M25.562 / M25.569	Pain in right / left / unspecified knee	High risk as a primary diagnosis. Pain-only presentation in an osteoarthritic Medicare patient maps directly to a nationally non-covered scenario
M25.461 / M25.462	Effusion, right / left knee	Supporting diagnosis; strengthens the objective findings record
M25.661 / M25.662	Stiffness of right / left knee, not elsewhere classified	Supporting diagnosis for arthrofibrosis and lysis of adhesions

Acute injury and infection

Code Family	Description	Specificity Requirement
S83.2-	Tear of meniscus, current injury	Encodes tear type (bucket-handle, peripheral, complex, other), meniscus (medial or lateral), and laterality, plus a seventh character for encounter: A (initial), D (subsequent), S (sequela). Example: S83.241A
S83.3-	Tear of articular cartilage of current knee injury	Laterality plus seventh character required
S83.51- / S83.52-	Sprain of anterior / posterior cruciate ligament of knee	Laterality plus seventh character required
S83.41- / S83.42-	Sprain of medial / lateral collateral ligament of knee	Laterality plus seventh character required
M00.06-	Staphylococcal arthritis, knee	M00.061 (right), M00.062 (left), M00.069 (unspecified). Supports the covered lavage-and-drainage pathway under 29871
M01.X6-	Direct infection of knee in infectious and parasitic diseases classified elsewhere	Laterality required
T84.5- / T84.6-	Infection and inflammatory reaction due to internal joint prosthesis / internal fixation device	Seventh character required. Relevant to retained hardware scenarios

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Procedure Guide

Applicable Modifiers

Modifier	Application	Operational Note
RT / LT	Right side / left side	Required on essentially every knee arthroscopy line. Omission is a leading cause of front-end rejection
50	Bilateral procedure	Where the payer accepts a single line with modifier 50 rather than separate RT and LT lines. Payer preference varies; confirm before submission
59	Distinct procedural service	Historically used to identify chondroplasty performed in a separate compartment for non-Medicare payers. Not used for Medicare claims in this scenario - Medicare directs the use of G0289 instead
XS	Separate structure	The more specific alternative to modifier 59 where the distinction rests on a different compartment. Preferred by payers that have adopted the X-series
XU	Unusual non-overlapping service	Where the second service does not overlap the usual components of the primary service
51	Multiple procedures	Applied by payer edit in many cases; confirm whether the payer expects the modifier to be appended or applies it automatically
22	Increased procedural services	Reserved for substantially greater work. Requires a specific comparative narrative in the operative note quantifying the additional effort and, in most cases, a separate cover letter
58	Staged or related procedure during the postoperative period	For planned staged intervention, such as a second-stage cartilage restoration
78	Unplanned return to the operating room for a related procedure	For example, arthroscopic lavage for postoperative infection
79	Unrelated procedure during the postoperative period	Commonly used for contralateral knee surgery within the global period
73 / 74	Discontinued outpatient or ASC procedure before / after anesthesia administration	Facility claim modifiers
GA	Waiver of liability statement on file (Advance Beneficiary Notice issued)	Use where a Medicare service is expected to be denied as not reasonable and necessary - including NCD 150.9 non-covered scenarios
GY / GZ	Statutorily excluded / expected to be denied without an Advance Beneficiary Notice on file	GZ signals no notice was issued and results in provider liability. Avoid by issuing the notice
KX	Requirements specified in the medical policy have been met	Where a contractor article or payer policy directs its use

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Procedure Guide

Place of Service and Ambulatory Surgery Center Considerations

Setting	Code	Operational Considerations
Ambulatory surgery center	POS 24	The predominant setting for elective knee arthroscopy. Most arthroscopic knee codes are on the Medicare ASC covered procedures list. Facility and professional claims are billed separately. This is a named WISeR site of service
Hospital outpatient department	POS 22 (type of bill 13X)	Appropriate where comorbidities, anesthesia risk, anticipated complexity, or the planned procedure require hospital resources. Several payers apply a separate site-of-service medical necessity review; document the clinical rationale contemporaneously. This is a named WISeR site of service
Office	POS 11	Applicable to in-office needle arthroscopy, which multiple national policies designate as not medically necessary or expressly not managed. Verify before scheduling. This is a named WISeR site of service
Inpatient hospital	POS 21	Rare for isolated knee arthroscopy. Generally limited to septic arthritis requiring admission, polytrauma, or complex multi-ligamentous reconstruction. Note that hospital inpatient services are excluded from the WISeR Model

Ambulatory surgery center operational checklist

• Confirm the authorization covers the facility as well as the professional service; these are frequently separate determinations.
• Confirm the specific ASC is in network for the member's plan and that the surgeon's privileges are current.
• Confirm the planned codes are on the applicable ASC covered procedures list for the payer and, for Medicare, for the current calendar year.
• Where site-of-service review applies, document the comorbidity or complexity rationale for a hospital outpatient department before the case is booked, not after a denial.
• Confirm implant and biologic coverage separately where meniscal repair devices, allograft, or cultured chondrocytes are anticipated.
• Reconcile the anesthesia authorization requirement, which some plans manage separately.

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Procedure Guide

Clinical Documentation Checklist

Consolidated pre-submission and pre-billing checklist. Reproducible as a standalone quality assurance instrument.

Before submitting the authorization request

• Named intended procedure or procedures, with laterality and compartment
• Anticipated intraoperative contingency codes identified
• Weight-bearing radiographs within twelve months, with an explicit Kellgren-Lawrence grade
• MRI or computed tomography arthrogram report confirming a structural lesion, with articular surface extension stated where applicable
• Modified Outerbridge grade documented where cartilage pathology is at issue
• Mechanical symptoms documented in the clinician's own words, with dates
• At least two positive provocative examination findings recorded
• Range of motion in degrees, with any block quantified
• Pain score at intake and at reevaluation
• Functional limitation stated against specific activities or occupational demands
• Conservative care ledger complete with modalities, dates, duration, provider, and response
• Documented reevaluation showing no meaningful improvement
• Preoperative intra-articular injection window verified against the governing policy
• Explicit medical necessity statement linking imaging, examination, and symptoms
• Correct reviewing entity identified and correct submission channel confirmed
• For Original Medicare in a WISeR state, WISeR applicability of the planned codes verified

Before releasing the claim

• Operative note names every compartment entered and every service performed
• Synovectomy documented as limited or major, with compartments named
• Meniscectomy documented as medial only, lateral only, or both
• Loose body size in millimeters and access route documented where removal is reported
• Chondroplasty compartment documented, with an affirmative statement that no other surgical service was performed in that compartment
• G0289 used in place of 29877 for Medicare where the separate compartment criterion is met
• No chondroplasty code reported alongside 29880 or 29881
• Separate procedure codes 29875 and 29884 not reported with another ipsilateral arthroscopic service
• Laterality modifier present on every line
• Diagnosis codes at full required specificity, including seventh characters where applicable
• Primary diagnosis reflects the structural lesion rather than pain alone
• Procedure performed reconciled against the authorized code set
• Advance Beneficiary Notice issued and the appropriate modifier appended where a Medicare non-covered scenario applies

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Procedure Guide

Procedure Comparison

Meniscectomy versus meniscal repair

Dimension	Partial Meniscectomy (29880 / 29881)	Meniscal Repair (29882 / 29883)
Principle	Resection of the torn, non-functional meniscal fragment	Preservation and healing of the meniscus
Ideal tear pattern	Complex, degenerative, radial, or flap tears in avascular tissue	Vertical longitudinal, peripheral, bucket-handle, and root tears in vascularized zones
Ideal patient	Any age where the tear is not repairable	Younger patients, acute traumatic tears, concomitant ligament reconstruction
Recovery	Rapid; weight-bearing generally advanced early	Protracted; commonly restricted weight-bearing and motion for several weeks
Long-term consequence	Accelerated compartment arthrosis proportional to the volume of meniscus resected	Better long-term chondroprotection where healing is achieved
Payer posture	Under intense scrutiny; the arthrosis ceiling is applied strictly	Increasingly favored; acute traumatic root tears frequently bypass conservative care requirements
Coding note	Chondroplasty is inclusive by definition	Chondroplasty in a different compartment may be separately reportable, using G0289 for Medicare

Arthroscopy versus continued non-surgical management in degenerative knee disease

Dimension	Arthroscopic Debridement / Lavage	Structured Non-Surgical Management
Evidence base	Multiple randomized controlled trials and systematic reviews find no clinically important benefit over placebo surgery or non-operative care in degenerative knee disease	Exercise therapy demonstrates comparable outcomes in degenerative meniscal tears at two-year and five-year follow-up in randomized comparisons
Medicare position	Nationally non-covered for the three scenarios described in NCD 150.9; now subject to WISeR prior authorization in six states	Covered under standard benefit categories
Commercial position	Widely designated not medically necessary for osteoarthritis	Required as a prerequisite by essentially every payer
Where arthroscopy still wins	True mechanical block, displaced fragment, loose body, septic arthritis, acute traumatic root tear, discoid meniscus, osteochondritis dissecans	Everything else in the degenerative knee

Arthroscopy versus arthroplasty in the arthritic knee

When a patient with Kellgren-Lawrence Grade 3 or 4 arthrosis presents with mechanical symptoms, the operational question is rarely whether arthroscopy is technically possible. It is whether arthroscopy is the correct pathway. In most such cases the appropriate pathway is either continued non-surgical management or arthroplasty evaluation, and the payer will read an arthroscopy request as an attempt to defer the arthroplasty conversation. Where a genuine discrete lesion exists in an arthritic knee - a displaced bucket-handle fragment causing a true locked knee, for example - the authorization request must lead with the mechanical block and the displacement, and must explicitly acknowledge and address the arthrosis rather than omit it. Omission reads as concealment; acknowledgment with a reasoned argument reads as clinical judgment.

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Procedure Guide

Device Manufacturers and System Considerations

Isolated diagnostic and debridement arthroscopy is generally implant-free. Device considerations arise principally in meniscal repair, cartilage restoration, and osteochondritis dissecans fixation, and they carry real authorization and coding consequences. The categories below are provided for operational awareness; product availability, FDA clearance status, and coverage change frequently and must be verified for each case.

Category	Representative Systems and Manufacturers	Operational Considerations
Arthroscopy platforms, visualization, and fluid management	Arthrex, Smith & Nephew, Stryker, ConMed Linvatec, Karl Storz, Arthrex SynergyUHD, Stryker 1788, Smith & Nephew LENS	Capital equipment. Not separately reportable. Relevant to ambulatory surgery center cost structure and case costing rather than to authorization
All-inside meniscal repair devices	Smith & Nephew FAST-FIX, Arthrex FiberStitch and Knee Scorpion, Stryker AIR+ and IntelliCart, ConMed Y-Knot and TRUESPAN, Biomet MaxFire	Implants are generally included in the facility payment for arthroscopic meniscal repair. Some commercial payers require the device name and quantity on the operative note. Verify whether the payer separately recognizes any implant code
Meniscal root repair and transosseous fixation	Arthrex FiberTape and knotless anchors, Smith & Nephew Q-FIX, Stryker Iconix	Root repair is a distinct clinical and authorization scenario. Document the root avulsion, the fixation strategy, and whether the tear is acute and traumatic
Meniscal scaffolds and implants	Collagen meniscus implant products	Reported with HCPCS G0428 where recognized. Coverage is inconsistent and several payers designate these as investigational. Obtain written confirmation before scheduling
Cartilage restoration - cell-based	MACI Implant (Vericel), reported with J7330 and CPT 27412	FDA-approved autologous cellularized scaffold for symptomatic full-thickness cartilage defects of the knee in adults. Criteria commonly include age and body mass index thresholds, defect size ranges, contained lesion, absence of a corresponding kissing lesion, normal alignment, and a stable knee. Named contraindications include hypersensitivity to gentamicin or to porcine or bovine products
Cartilage restoration - osteochondral grafting	Arthrex OATS, Smith & Nephew COR, Zimmer Biomet Chondrofix, JRF Ortho and MTF Biologics allograft tissue	Autograft and mosaicplasty are commonly limited to smaller defects; allograft to larger defects. Document defect size in square centimeters and lesion containment
Osteochondritis dissecans fixation	Bioabsorbable and metallic compression screws and darts from Arthrex, Smith & Nephew, Stryker, and Zimmer Biomet	Fixation strategy determines whether 29885, 29886, or 29887 applies. The operative note must state whether the lesion was intact and whether internal fixation and bone grafting were performed
Devices designated experimental or investigational by multiple payers	Knee subchondroplasty; focal resurfacing implants such as Arthrosurface femoral condyle implants, HemiCAP, and UniCAP; medial knee implanted shock absorber devices; in-office needle arthroscopy systems	Multiple national policies designate these as not medically necessary or experimental. Do not schedule without written plan-specific confirmation and a patient financial responsibility discussion

GoHealthcare Best Practice | Device authorization is a separate workstream

Practices routinely obtain authorization for the surgical procedure and then discover at the time of billing that the implant, allograft, or biologic was not covered. Where a case involves a meniscal scaffold, an allograft, cultured chondrocytes, or any device on a payer's investigational list, treat the device as a distinct authorization item with its own verification, its own written confirmation, and its own documentation in the chart. The cost exposure on a single unapproved biologic frequently exceeds the professional fee for the entire case.

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Procedure Guide

Common Prior Authorization Denials

Denial Reason	What It Usually Means	Prevention
Radiographic osteoarthritis exceeds the policy threshold	Weight-bearing films show Kellgren-Lawrence Grade 2 or greater against a policy that requires the absence of Grade II or greater findings	Grade the films before booking. Where an exception pathway exists - locked knee, acute displaced tear - lead the request with that exception rather than with the meniscal tear
No Kellgren-Lawrence grade documented	The reviewer cannot confirm the arthrosis ceiling and defaults to a pend or denial	Mandatory grading field in the knee evaluation template; provider interpretation where the radiology report does not grade
Non-weight-bearing radiographs only	Joint space narrowing is systematically understated and the study is rejected as a grading basis	Standing protocol for all knee radiographs ordered for surgical planning
Insufficient documentation of conservative management	The single most common denial across all payers. Conservative care described narratively without dates, modalities, duration, or documented response	Structured conservative care ledger attached to every submission
MRI describes degenerative change rather than a surface-extending tear	The imaging does not satisfy the named criterion	Radiology addendum where supported, or a documented surgeon interpretation naming the articular surface extension
Insufficient physical examination findings	Fewer positive provocative tests than the policy requires; eviCore requires at least two for meniscal procedures	Document joint line tenderness, McMurray, Thessaly, and Apley on every knee examination as a standing template
No mechanical symptoms documented	Pain-only presentation, which reads as arthritis-directed surgery	Explicit mechanical symptom capture in the patient's own words at the initial visit
Imaging and examination do not correlate	Lateral imaging finding, medial examination findings, no explanation	Write the correlation statement explicitly, and address any discordance directly
Debridement or chondroplasty requested for osteoarthritis	Directly non-covered under NCD 150.9 and designated not medically necessary by multiple commercial vendors	Do not request it. Where chondroplasty is genuinely incidental to another procedure, let it be inclusive rather than requesting it as a primary service
Recent intra-articular corticosteroid injection	Injection falls inside the policy's preoperative exclusion window	Check the window before the injection is given, not before the surgery is booked
Requested procedure not specified	Request submitted as generic knee arthroscopy	Name the procedure, the compartment, and the contingencies
Site of service not supported	Hospital outpatient department requested without a documented clinical rationale	Document comorbidity, anesthesia risk, or complexity contemporaneously
Investigational device or procedure	Subchondroplasty, focal resurfacing implants, implanted shock absorbers, or in-office needle arthroscopy	Obtain written plan confirmation before scheduling and complete a financial responsibility discussion
Authorization expired	Surgical date fell outside the validity window	Record the window at determination; build a scheduling alert at 75 percent of the window

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Procedure Guide

Appeal Strategies

The purpose of an appeal is not to argue that the reviewer was wrong about medicine. In most knee arthroscopy denials the reviewer applied the criteria correctly to an incomplete record. The purpose of the appeal is to close the specific gap the reviewer identified, with a specific record page, in a format the reviewer can process quickly.

The structure that works

1 Identify the exact criterion cited. Denial letters increasingly name the guideline and section - for example, a determination based on eviCore CMM-312. Request the specific criteria set in writing if it is not named.

2 Quote the criterion and answer it directly. One paragraph per criterion. Do not restate the entire clinical history.

3 Cite the record page. Every assertion should reference a page number in the attached record. Reviewers work under time pressure; an unpaginated 60-page attachment is functionally unread.

4 Supply what was missing, dated. If conservative care was the gap, attach the ledger. If grading was the gap, attach the graded interpretation. If a mechanical symptom was the gap, attach the office note that contains it - not a new note written after the denial.

5 Invoke the named exception where one applies. Acute traumatic root tear or avulsion, locked knee, loose body causing mechanical symptoms, and septic arthritis are explicitly recognized exception pathways in current guidelines. Naming the exception converts the case from a criteria dispute into a categorical fit.

6 Attach targeted literature only where it is genuinely dispositive. A single well-chosen citation on root tear outcomes or on MRI underestimation of chondral defect size carries more weight than a bibliography.

7 Escalate deliberately. Reconsideration, then independent external review, then state department of insurance complaint where warranted. For Medicare, follow the standard redetermination and reconsideration pathway; WISeR does not alter beneficiary appeal rights.

Documentation that most often reverses a denial

• A graded weight-bearing radiograph interpretation where none previously existed in the record.
• A dated, structured conservative care ledger with therapy notes attached.
• A radiology addendum confirming articular surface extension of the tear.
• The original office note containing the mechanical symptom description, highlighted and page-referenced.
• Evidence that the presentation falls within a named exception pathway.
• A clear compartment-level correlation statement resolving apparent imaging-examination discordance.
• For workers' compensation, a causation statement distinguishing acute traumatic pathology from pre-existing degenerative change.

GoHealthcare Prior Authorization Insight | How to avoid the peer-to-peer entirely

Peer-to-peer reviews are expensive. They consume surgeon time at a rate that dwarfs the administrative cost of the case, they are scheduled at the reviewer's convenience, and the windows are short and rarely extended. Practices that consistently avoid them do one thing differently: they submit against the criteria rather than against the diagnosis.

Concretely, this means the authorization packet contains a short cover page that walks the governing guideline's criteria in order and states, for each one, where in the attached record it is satisfied. It takes an authorization specialist about eight minutes to build once the underlying documentation exists. In our experience it is the highest-return eight minutes in the entire musculoskeletal authorization workflow, because it removes the reviewer's need to hunt - and hunting is what produces pends.

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Procedure Guide

GoHealthcare Clinical Insights

The recommendations below reflect GoHealthcare's operational experience supporting orthopedic surgery, sports medicine, and ambulatory surgery center clients across national and regional payers.

Documentation quality

• Build the Kellgren-Lawrence grade into the knee examination template as a required field. It is the single most consequential data element in the entire pathway and it is missing from most charts we audit.
• Capture mechanical symptoms as free text in the patient's language at the first visit. Structured checkboxes are useful for retrieval but reviewers respond to specific, concrete descriptions.
• Write the imaging-examination-symptom correlation statement as a discrete, labeled paragraph. Do not leave the reviewer to infer it.
• Name the compartment in every operative note, for every service performed. This single habit protects both authorization and separate reporting.
• Where the surgeon interprets radiographs independently, label it as such and describe the findings in grading-compatible terms.

Workflow improvement

• Assign a single authorization specialist ownership of the knee service line rather than distributing knee cases across a general queue. Criteria mastery compounds.
• Maintain a living payer matrix at the plan level, not the carrier level, capturing the reviewing entity, the conservative care duration, the arthrosis ceiling, the required number of examination findings, and the injection window.
• Set a quarterly guideline surveillance cycle. In the last twelve months alone, eviCore moved to a new guideline version, Carelon published both a November 2025 effective date and a September 2026 update, UnitedHealthcare refreshed its knee policy, and CMS introduced prior authorization to Original Medicare in six states.
• Route conservative care documentation into the chart proactively. Therapy notes sitting at an outside provider are, for authorization purposes, the same as therapy that never happened.
• Reconcile the operative note against the authorized code set before the claim drops, not after the denial.

Prior authorization success

• Submit the criteria-mapped cover page with every request.
• Submit contingency codes, or describe contingencies narratively where the platform will not accept them.
• Where an exception pathway applies, lead with it. A locked knee is not a meniscal tear case with a complication; it is a categorically different request.
• Track pends by cited criterion rather than by payer. The pattern of cited criteria tells you exactly which template field to fix.
• Record the authorization validity window at determination and build a scheduling alert.

Denial prevention and communication

• Give surgeons a one-page criteria card for the knee service line. Most documentation gaps are unawareness, not disagreement.
• Create a standing feedback loop from the authorization team to the clinical team, reporting the top three cited criteria monthly.
• Escalate device and biologic questions to a separate verification track before the case is booked.
• Where a request will predictably be denied - debridement for osteoarthritis, an investigational device - have the financial responsibility conversation before surgery rather than after the explanation of benefits.

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Procedure Guide

GoHealthcare Leadership Perspective

Knee arthroscopy occupies an unusual position in musculoskeletal healthcare operations. It is simultaneously one of the highest-volume outpatient orthopedic procedures in the United States and one of the most contested. That combination makes it a useful diagnostic instrument for the operational health of an orthopedic enterprise: an organization that performs well on knee arthroscopy authorization almost always performs well elsewhere, because the same disciplines transfer.

Documentation excellence as an operating asset

The introduction of algorithmic first-pass review under the WISeR Model changes the economics of documentation. Historically, documentation quality was a compliance obligation and a denial-avoidance measure. Under a model that contemplates gold carding for providers with consistent approval histories, documentation quality becomes a direct determinant of administrative burden. A practice with a clean approval history may be exempted from prior authorization entirely; a practice with an inconsistent history carries the review burden indefinitely. Leadership should treat the documentation template as infrastructure, budgeted and maintained accordingly.

The medical necessity conversation has moved upstream

For most of the last two decades, medical necessity was adjudicated after the surgical decision. The current environment inverts that. The arthrosis ceiling, the conservative care duration, and the imaging language requirements are all determined at the first office visit - months before surgery is contemplated. Organizations that continue to treat prior authorization as a scheduling function will underperform organizations that treat it as a clinical documentation function embedded in the initial encounter.

Revenue cycle implications

• Knee arthroscopy denials are disproportionately administrative rather than clinical. That is good news: administrative denials are preventable at low cost, and the return on template investment is immediate and measurable.
• The bundling structure of the knee arthroscopy code set means that revenue leakage more often comes from failure to document compartments than from failure to bill a code.
• Device and biologic exposure on cartilage and meniscal repair cases can exceed the entire professional fee. Verification discipline on implants is a margin issue, not a clerical one.
• Site-of-service review is expanding. Practices with both ambulatory surgery center and hospital outpatient department options should document the setting rationale as a matter of routine.

Compliance posture

The NCD 150.9 non-coverage scenarios are narrow but specific, and the diagnosis codes reported on a knee arthroscopy claim are the primary signal by which a payer or auditor identifies them. Coding a pain-only or osteoarthritis-primary diagnosis alongside a debridement code in a Medicare beneficiary is not a coding preference; it is an affirmative statement that maps to a non-covered scenario. Organizations should audit this specific pairing periodically. Similarly, the chondroplasty bundling rules are well-established and long-standing, which means unbundling in this family is difficult to characterize as inadvertent.

Artificial intelligence and workflow

Payers and CMS are both now using machine-assisted review. The appropriate organizational response is not to attempt to game the algorithm but to make the record machine-legible: discrete, labeled, dated data elements in predictable locations, rather than narrative that requires interpretation. Practices adopting AI-assisted documentation and authorization tooling should also establish governance - human review of every generated clinical assertion, provenance tracking for extracted data, and a clear prohibition on generating clinical facts that are not in the record. Several payer guideline documents now contain explicit terms restricting use of their content by external artificial intelligence systems; organizations building automated criteria tools should route those terms through counsel before deployment.

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Procedure Guide

GoHealthcare Prior Authorization Insight

Operational expertise not readily found in payer policies or clinical guidelines.

Seven things experienced knee arthroscopy authorization specialists know

1 The denial is almost never about the surgery. Track a year of knee arthroscopy denials and the overwhelming majority resolve to two causes: no Kellgren-Lawrence grade and no structured conservative care record. Neither is a clinical disagreement. Both are fixable in the template.

2 Exception pathways are underused. Current guidelines contain named exceptions for locked knee, acute traumatic root tear or avulsion, and mechanical symptoms attributable to a loose body. Specialists who recognize these on intake route the case differently and skip the conservative care argument entirely.

3 The number of examination findings matters more than which ones. Where a policy requires at least two positive findings from a named list, documenting four costs nothing and satisfies every policy simultaneously. Build the full provocative test set into the examination template.

4 Injection timing is a self-inflicted denial. An intra-articular corticosteroid injection given three weeks before a planned arthroscopy can defeat the case under a four-week window. The injection decision and the surgical timeline must be made together.

5 Submit the contingency. The most common post-service denial in this service line is a service performed but not authorized. Every knee arthroscopy request should anticipate the realistic intraoperative variants.

6 Read the denial letter for the guideline citation, not the summary. The summary reason is generic. The guideline citation tells you exactly which criterion to answer, and answering that one criterion precisely is usually sufficient.

7 Version dates are not trivia. A packet built against a superseded guideline version will under-document in exactly the places the new version tightened. Confirm the governing version and effective date for the member's plan before assembling the packet.

Internal quality assurance recommendations

• Audit ten consecutive knee arthroscopy charts quarterly against the documentation checklist in this guide. Report the pass rate by element, not in aggregate.
• Maintain a denial register recording the payer, the reviewing entity, the guideline and section cited, the outcome, and the days to resolution.
• Require a coder review of the operative note against the authorized code set before claim release for every knee arthroscopy case involving more than one code.
• Reconcile the payer matrix against published guideline effective dates quarterly.
• Track first-pass approval rate, pend rate, peer-to-peer rate, and overturn rate as four separate metrics. They fail for different reasons and respond to different interventions.

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Procedure Guide

GoHealthcare Case Study

Original educational scenario. No actual patient or organization is depicted.

Clinical scenario

A 54-year-old office manager presents to a multi-site orthopedic practice with a four-month history of right knee pain following a twisting injury while stepping off a curb. She reports intermittent painful catching during stair descent and one episode in which the knee "stuck" in partial flexion for approximately thirty seconds. She has continued working but has stopped her regular walking routine. Examination demonstrates a small effusion, medial joint line tenderness, a positive McMurray test, and a positive Thessaly test, with full extension and flexion to 130 degrees. Non-weight-bearing radiographs obtained at an urgent care center two months earlier were reported as showing "mild degenerative change." MRI obtained at an outside facility was reported as "complex degenerative signal within the posterior horn of the medial meniscus; mild chondral thinning of the medial compartment."

Documentation challenges

• No weight-bearing radiographs and no Kellgren-Lawrence grade anywhere in the record.
• MRI language describing degenerative signal rather than a tear extending to the articular surface.
• Conservative care consisting of over-the-counter ibuprofen and self-directed rest, with no dates, no formal therapy, and no documented reevaluation.
• The mechanical symptom history captured in the surgeon's dictation as "occasional catching," without the locking episode.

Prior authorization barriers

The initial request for arthroscopic partial medial meniscectomy was submitted to the plan's delegated musculoskeletal vendor and pended within 48 hours with three cited gaps: absence of a graded weight-bearing radiograph, MRI findings not confirming a tear extending to the articular surface, and insufficient documentation of provider-directed non-surgical management. A peer-to-peer was offered with a five-business-day window.

Payer considerations

The governing guideline required the absence of Kellgren-Lawrence Grade II or greater findings on plain radiographs, an MRI demonstrating a tear extending to the articular surface rather than degenerative fraying, at least two positive examination findings, and three months of provider-directed non-surgical management, with a defined exception for a meniscal tear accompanied by a locked knee on examination. The examination findings criterion was already satisfied. The other three were not.

Operational workflow and resolution strategy

1 The authorization specialist declined the immediate peer-to-peer and instead requested a seven-day extension to submit additional records - preserving the peer-to-peer option rather than spending it on an incomplete record.

2 Weight-bearing anteroposterior, lateral, axial, and posteroanterior flexion radiographs were obtained the same week. The surgeon documented an independent interpretation of Kellgren-Lawrence Grade 1 with preserved medial joint space.

3 The outside MRI was re-reviewed with the practice's musculoskeletal radiologist, who issued an addendum describing a radial tear of the posterior horn of the medial meniscus extending to the inferior articular surface, with a small displaced flap.

4 The patient was enrolled in formal physical therapy. A structured conservative care ledger was opened recording therapy dates and visits, the ibuprofen course with dates, and activity modification.

5 The surgeon amended the plan of care to document the prior locking episode in the patient's own words, obtained at a dedicated follow-up visit rather than by retrospective addendum.

6 At eight weeks the patient was reevaluated with no meaningful improvement and one further catching episode. A criteria-mapped resubmission was assembled, walking the guideline criteria in order with page references.

Outcome

The resubmission was approved within 72 hours without a peer-to-peer. Total elapsed time from initial pend to approval was eleven weeks, driven almost entirely by the conservative care requirement. Arthroscopic partial medial meniscectomy was performed at the practice's ambulatory surgery center. The operative note named the medial compartment, documented the displaced flap, and documented that no other surgical service was performed in the patellofemoral or lateral compartments. The claim was submitted with CPT 29881 with laterality modifier and paid on first submission.

Lessons learned

• Every gap in this case was created before the authorization request was ever submitted. None was a clinical disagreement.
• A radiology addendum is an available and legitimate remedy for imprecise report language where the images support it.
• The surgeon's independent radiograph interpretation satisfied the grading requirement without a repeat radiology read - a pathway several guidelines expressly permit.
• Preserving the peer-to-peer rather than spending it on an incomplete record was the highest-leverage tactical decision in the case.
• The eleven-week delay was clinically tolerable here but would not have been in a truly locked knee. Recognizing exception pathways at intake is what prevents that delay in cases where it matters.
• Documenting the locking episode at a real follow-up visit, rather than by retrospective addendum, produced a defensible record.

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Procedure Guide

GoHealthcare Best Practices

Domain	Practice
Template design	Mandatory fields for Kellgren-Lawrence grade, compartment, mechanical symptoms in free text, pain score, functional impact, and conservative care start date. If it is not a required field, it will be missing when it matters
Imaging protocol	Standing order set for weight-bearing anteroposterior, lateral, axial patellofemoral, and posteroanterior flexion views on any knee under surgical consideration
Radiology partnership	Agree standard reporting language with the reading group: articular surface extension, Kellgren-Lawrence grade, modified Outerbridge grade, loose body size and location
Conservative care	Structured ledger, opened at the first visit, with therapy notes routed into the chart automatically
Payer matrix	Plan-level matrix capturing reviewing entity, conservative care duration, arthrosis ceiling, required examination findings, injection window, and guideline version and effective date. Reviewed quarterly
Submission standard	Criteria-mapped cover page with page references on every request, without exception
Contingency authorization	Standard contingency code set submitted with every knee arthroscopy request
Device verification	Separate verification track for implants, allograft, and biologics, completed before the case is booked
Operative note standard	Every compartment entered named; every service tied to a compartment; loose body size and access route stated; synovectomy scope stated
Pre-bill reconciliation	Coder review of the operative note against the authorized code set for every multi-code case
Denial analytics	Denial register keyed to the cited guideline criterion, reported monthly to the clinical team
Guideline surveillance	Quarterly review of eviCore, Carelon, Evolent, UnitedHealthcare, Aetna, and CMS publications, including WISeR appendices
Governance	Counsel review before deploying any automated tool that ingests proprietary payer guideline content

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Procedure Guide

Common Mistakes

Clinical documentation

• Ordering non-weight-bearing radiographs for surgical planning.
• Accepting an ungraded radiology report without providing an independent interpretation.
• Describing pain without describing mechanical symptoms.
• Documenting conservative care in the aggregate rather than as a dated ledger.
• Leaving imaging-examination discordance unaddressed.
• Adding a retrospective addendum after a denial rather than obtaining the information at a real encounter.

Authorization

• Submitting a generic knee arthroscopy request without naming the procedure or compartment.
• Submitting only the primary code with no contingencies.
• Building the packet against a superseded guideline version.
• Spending the peer-to-peer on an incomplete record.
• Failing to record the authorization validity window.
• Treating the facility authorization as automatic once the professional authorization is obtained.
• Overlooking the WISeR requirement for Original Medicare beneficiaries in the six model states.

Coding and billing

• Reporting 29877 or G0289 with 29880 or 29881.
• Using 29876 when only one compartment was involved.
• Using a synovectomy code for cartilage debridement.
• Reporting 29875 or 29884 alongside another ipsilateral arthroscopic procedure.
• Reporting 29877 instead of G0289 for a Medicare separate-compartment chondroplasty.
• Omitting the laterality modifier.
• Using a non-billable ICD-10-CM parent code such as M23.2, M23.4, or M23.5 without the required additional characters.
• Omitting the seventh character on acute injury codes in the S83 family.
• Reporting a pain-only or osteoarthritis-primary diagnosis with a debridement code in a Medicare beneficiary.
• Billing a procedure materially different from the authorized procedure without reconciliation.

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Procedure Guide

Pearls and Pitfalls

Pearls	Pitfalls
Grade every knee radiograph at the first visit; the grade determines the entire pathway	Assuming the radiologist will grade; most reports do not
Capture mechanical symptoms in the patient's own words and date them	Substituting a pain score for a mechanical symptom description
Name the compartment for every service in every operative note	Writing "chondroplasty performed" without a compartment and losing legitimate separate reporting
Lead with the exception pathway when one applies	Arguing the general meniscal tear criteria in a locked knee case
Use G0289 for Medicare separate-compartment chondroplasty	Reaching for modifier 59 with 29877 on a Medicare claim in that scenario
Verify the injection window before the injection, not before the surgery	Discovering a three-week-old injection during authorization
Submit contingency codes with the primary request	Discovering at billing that the repair performed was never authorized
Attach the conservative care ledger to every submission	Answering "please provide conservative treatment documentation" twice
Confirm the governing guideline version and effective date	Building the packet against last year's criteria
Reconcile the operative note against the authorization before the claim drops	Learning about the mismatch from a remittance advice
Treat device and biologic coverage as a separate authorization item	Absorbing an uncovered implant cost that exceeds the professional fee
Track denials by cited criterion	Tracking denials by payer and learning nothing actionable

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Procedure Guide

Frequently Asked Questions

Q1. Does Medicare cover knee arthroscopy?

Yes, with an important exception. NCD 150.9 establishes national non-coverage for arthroscopic lavage used alone for the osteoarthritic knee, arthroscopic debridement for osteoarthritic patients presenting with knee pain only, and arthroscopic debridement or lavage with or without debridement for patients presenting with severe osteoarthritis. Everything else - meniscectomy, meniscal repair, synovectomy, cartilage restoration, ligament reconstruction - is not addressed by any NCD and is subject to Medicare Administrative Contractor discretion.

Q2. Is there an LCD for knee arthroscopy?

Most contractors do not maintain a full Local Coverage Determination for knee arthroscopy. Coverage is administered largely through billing and coding articles operationalizing NCD 150.9, such as A52369, A54061, and A54063. Because Medicare criteria are not fully established for most knee arthroscopy indications, Medicare Advantage plans may apply internal medical necessity criteria consistent with 42 CFR 422.101(b)(6).

Q3. Does Original Medicare require prior authorization for knee arthroscopy?

As of 2026, yes - in six states. Under the CMS WISeR Model, arthroscopic lavage and arthroscopic debridement for the osteoarthritic knee (NCD 150.9) is a selected service for Original Medicare beneficiaries in New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington, for dates of service on or after January 15, 2026. Providers may either submit a prior authorization request or accept post-service, pre-payment review.

Q4. Does WISeR apply to Medicare Advantage members?

No. WISeR applies to Original Medicare fee-for-service beneficiaries only. Medicare Advantage members remain subject to their plan's own prior authorization requirements, which for knee arthroscopy are typically extensive.

Q5. Does WISeR change what Medicare covers?

No. CMS is explicit that the model does not change Medicare coverage or payment criteria. Reviewers apply existing Medicare coverage policy, and beneficiary appeal rights are unchanged. What changes is the timing and the process, not the substantive standard.

Q6. What is the Kellgren-Lawrence ceiling most payers apply?

It varies by one critical grade. Aetna's bulletin permits Kellgren-Lawrence 0, 1, or 2 or modified Outerbridge Grade 0, 1, or 2. eviCore CMM-312 requires the absence of Kellgren-Lawrence Grade II or greater findings for several pathways, with a named exception for a locked knee. Always confirm the governing policy for the specific member.

Q7. Why do meniscectomy requests get denied so often?

Because the same MRI finding - a degenerative medial meniscal tear in a middle-aged patient - supports two very different clinical narratives. Payers use the radiographic arthrosis grade and the presence or absence of mechanical symptoms to distinguish a structural lesion requiring resection from a feature of underlying osteoarthritis. Requests that do not supply both data points default to the arthritis reading.

Q8. What is the single most common denial reason?

Insufficient documentation of provider-directed conservative management, closely followed by the absence of a documented Kellgren-Lawrence grade. Both are administrative rather than clinical, and both are fully preventable at the template level.

Q9. Can the surgeon grade the radiographs, or must the radiologist?

Several national guidelines expressly contemplate provider interpretation of radiographs where a graded radiology report is unavailable, provided the surgeon submits a detailed imaging description that correlates with the clinical findings. Label the interpretation clearly as the surgeon's own.

Q10. How long must conservative care last?

Most commonly three months of provider-directed non-surgical management. Some policies accept six weeks for defined indications. Named exceptions commonly include acute traumatic meniscal root tear or avulsion confirmed on MRI, meniscal tear with a locked knee on examination, and mechanical symptoms attributable to an intra-articular loose or foreign body.

Q11. What counts as conservative management?

Generally physical therapy - formal or a documented supervised home program - plus at least one complementary strategy such as anti-inflammatory medication, adjunctive medication, intra-articular corticosteroid injection, or documented activity modification and rest. A documented reevaluation showing no meaningful improvement is also required.

Q12. Can chondroplasty be billed with meniscectomy?

No. CPT 29880 and 29881 both state that debridement or shaving of articular cartilage is included, in the same or separate compartments, when performed. Neither 29877 nor G0289 is reportable with 29880 or 29881 for the same knee.

Q13. When is G0289 used?

For Medicare Part B, G0289 replaces 29877 when chondroplasty, or loose or foreign body removal, is performed at the time of another surgical knee arthroscopy in a different compartment of the same knee, and no other surgical service was performed in that compartment. If chondroplasty is the only procedure performed, 29877 is the correct code for all payers.

Q14. Can chondroplasty be reported with meniscal repair?

Yes, when performed in a different compartment of the same knee where no other reportable service was performed. Medicare directs the use of G0289. Other payers may accept 29877 with an appropriate distinct procedural service modifier, subject to payer policy.

Q15. What is the difference between 29875 and 29876?

29875 is a limited synovectomy involving a single compartment, such as plica or shelf resection, and carries the separate procedure designation. 29876 is a major synovectomy involving two or more compartments. The operative note must name the compartments; reporting 29876 for a single-compartment procedure is a common downcoding and audit trigger.

Q16. Is loose body removal always separately reportable?

No. Global service data guidance treats removal of loose or foreign bodies as included in the base procedure. Separate reporting is supported where the body exceeds 5 millimeters and/or removal required a separate incision. Document the measurement and the access route.

Q17. Do payers cover in-office needle arthroscopy?

Generally no. Multiple national policies designate in-office diagnostic arthroscopy as not medically necessary based on the current evidence, and at least one vendor states expressly that it does not manage the service. Verify plan-specific position and complete a financial responsibility discussion before scheduling.

Q18. Is subchondroplasty covered?

Multiple national policies designate knee subchondroplasty as experimental, investigational, or unproven. Obtain written plan-specific confirmation before scheduling and treat a verbal approval as insufficient.

Q19. How should a locked knee be submitted?

As a locked knee, not as a meniscal tear. Locked knee is a named exception pathway in current guidelines that both waives the conservative care requirement and, in several policies, waives the radiographic arthrosis ceiling. Document the mechanical block on physical examination explicitly, including the degrees of restricted motion.

Q20. How are acute traumatic meniscal root tears handled?

Favorably, but with a critical distinction between procedures. An acute traumatic anterior, posterior, medial, or lateral meniscal root tear or avulsion confirmed on MRI is a named exception waiving the three-month conservative care requirement under eviCore CMM-312. Separately, Aetna's bulletin addresses meniscal repair for root tears under criteria while listing meniscectomy for root tears among services not considered medically necessary. Name the intended procedure precisely.

Q21. How far in advance can a corticosteroid injection be given?

Check the governing policy. Evolent's knee arthroscopy guideline specifies no intra-articular cortisone injection within four weeks of surgery. Joint replacement policies commonly specify a six-week window. This constraint is frequently overlooked and produces entirely avoidable denials.

Q22. What if additional pathology is found intraoperatively?

Document what was found, why it required treatment, and in which compartment. Then reconcile the operative note against the authorized code set before the claim drops and, where the procedure differs materially, initiate retrospective review or an authorization update per plan rules. Submitting contingency codes with the original request largely prevents this scenario.

Q23. Does the ambulatory surgery center need its own authorization?

Frequently yes. The facility and professional authorizations are often separate determinations. Confirm both, and confirm the facility's network status and the code's presence on the applicable covered procedures list.

Q24. How long is an authorization valid?

It varies by payer and is commonly 60 to 90 days. Under the WISeR Model, CMS illustrates a validity period of approximately 120 days. Record the window at determination and build a scheduling alert well before expiration.

Q25. What is gold carding and does it apply here?

Gold carding exempts providers with consistent approval histories from prior authorization requirements. CMS has signaled a gold-carding pilot under the WISeR Model targeted for mid-2026, and several commercial payers operate their own programs. Verify current status; the practical implication is that documentation discipline has a measurable administrative return.

Q26. How should workers' compensation cases be documented differently?

Causation documentation carries weight equal to medical necessity. Document the mechanism of injury, the temporal relationship between the injury and symptom onset, and an explicit distinction between acute traumatic pathology and pre-existing degenerative change. Jurisdiction-specific treatment guidelines may also impose their own criteria.

Q27. Which ICD-10-CM codes should be avoided as a primary diagnosis?

Avoid non-billable parent codes such as M23.2, M23.4, and M23.5 without the required additional characters. Avoid M17.9, osteoarthritis of knee unspecified. Use pain codes in the M25.56 family with particular caution as a primary diagnosis, since a pain-only presentation in an osteoarthritic Medicare beneficiary maps directly to a nationally non-covered scenario.

Q28. What is the fastest way to improve first-pass approval rates?

Two changes, in this order. First, make the Kellgren-Lawrence grade and the conservative care start date required fields in the knee evaluation template. Second, attach a criteria-mapped cover page with page references to every submission. Together these address the substantial majority of pends and denials in this service line.

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Procedure Guide

Key Takeaways

• Arthroscopy is a structural intervention, not an arthritis treatment. Every coverage position in this guide follows from that principle.
• NCD 150.9 is narrow but decisive. It establishes national non-coverage for lavage alone, debridement for pain-only osteoarthritic presentations, and debridement or lavage in severe osteoarthritis. CPT 29871 for infection remains covered. Everything else is contractor discretion.
• Original Medicare now has prior authorization for this procedure family in six states. The WISeR Model applies to New Jersey, Ohio, Oklahoma, Texas, Arizona, and Washington for dates of service on or after January 15, 2026.
• The Kellgren-Lawrence grade is the most consequential data element in the chart and is missing from most records at the time of authorization.
• Mechanical symptoms decide degenerative cases. Pain alone reads as arthritis; locking, catching, and giving way read as structural pathology.
• Conservative care must be a dated ledger, not a narrative assertion. It is the most frequently cited denial reason across every payer.
• Exception pathways exist and are underused - locked knee, acute traumatic root tear or avulsion, loose body with mechanical symptoms, and septic arthritis.
• Chondroplasty is inclusive to both meniscectomy codes and is reported as G0289 for Medicare when performed in a separate compartment during another arthroscopy.
• Compartment documentation protects both authorization and revenue. Name every compartment for every service.
• Guideline versions move. eviCore CMM-312 V2.0.2025 took effect March 7, 2026; Carelon Joint Surgery took effect November 15, 2025 with updates announced for September 19, 2026; UnitedHealthcare's knee policy took effect June 1, 2026. Build a quarterly surveillance cycle.
• Device and biologic coverage is a separate workstream with cost exposure that can exceed the professional fee.
• Most denials in this service line are administrative, not clinical - which means most are preventable at low cost.

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Procedure Guide

Future Outlook

Prior authorization is moving into traditional Medicare

The WISeR Model is the first sustained application of prior authorization to outpatient surgical services in Original Medicare. Whether or not the model expands geographically, it establishes an operational template. Organizations should plan for the possibility that additional musculoskeletal services and additional states are added in later performance years, and should build authorization capability that scales rather than point solutions for six states.

Algorithmic first-pass review changes documentation strategy

As both CMS and commercial payers deploy machine-assisted review, the structure of clinical documentation becomes as important as its content. Discrete, labeled, dated data elements in predictable locations will outperform equally accurate narrative. Practices that restructure their templates around extractability will see measurable differences in first-pass approval rates.

Gold carding creates a business case for documentation quality

If gold carding matures as signaled, documentation discipline converts from a compliance cost into an operating asset that reduces administrative burden. This is the first mechanism in recent memory that pays practices, in reduced friction, for doing documentation well. Organizations should track their own approval history as a managed metric in anticipation.

Continued contraction of arthroscopy for degenerative disease

The evidence base against arthroscopic intervention in degenerative knee disease has been stable and consistent for two decades and continues to accumulate. Expect further tightening of arthrosis ceilings, more explicit exclusion language, and increasing attention to the distinction between a tear extending to the articular surface and degenerative fraying.

Meniscal preservation and root repair

The shift from resection toward preservation continues, supported by evidence that non-operative management of medial meniscus posterior root tears is associated with worsening arthritis and poor clinical outcomes. Expect payer criteria to continue differentiating repair from resection, and expect repair pathways to become relatively more accessible while resection pathways tighten.

Cartilage restoration and biologics

Cell-based and osteochondral grafting techniques continue to mature, with criteria converging around defect size, containment, alignment, body mass index, and age. Emerging biologic and orthobiologic interventions will continue to face investigational designations until higher-quality comparative evidence is available. Practices should expect a persistent gap between clinical availability and coverage.

Site of service and ambulatory migration

Payers continue to steer musculoskeletal procedures toward ambulatory surgery centers. Expect site-of-service medical necessity review to expand and to require contemporaneous clinical justification for hospital outpatient department selection.

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Procedure Guide

References

CMS, Medicare, and federal sources

1 Centers for Medicare & Medicaid Services. National Coverage Determination (NCD) 150.9, Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee. https://www.cms.gov/medicare-coverage-database/view/ncd.aspx?ncdid=214

2 Centers for Medicare & Medicaid Services. Medicare National Coverage Determinations Manual, Publication 100-03, Chapter 1, Part 2, Section 150.9. https://www.cms.gov/medicare/regulations-guidance/manuals/internet-only-manuals-ioms

3 Centers for Medicare & Medicaid Services. Local Coverage Article A52369, Billing and Coding: Arthroscopic Lavage and Arthroscopic Debridement for the Osteoarthritic Knee. https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=52369

4 Centers for Medicare & Medicaid Services. Local Coverage Article A54061. https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=54061

5 Centers for Medicare & Medicaid Services. Local Coverage Article A54063. https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=54063

6 Centers for Medicare & Medicaid Services. MLN Matters MM3281 and Change Request 3281, Transmittal 14 (June 10, 2004). https://www.cms.gov/medicare-coverage-database

7 Centers for Medicare & Medicaid Services Innovation Center. Wasteful and Inappropriate Service Reduction (WISeR) Model. https://www.cms.gov/priorities/innovation/innovation-models/wiser

8 Centers for Medicare & Medicaid Services. WISeR Model Frequently Asked Questions. https://www.cms.gov/priorities/innovation/files/document/wiser-model-frequently-asked-questions

9 Federal Register. Medicare Program; Implementation of Prior Authorization for Select Services for the Wasteful and Inappropriate Services Reduction (WISeR) Model. July 1, 2025. https://www.federalregister.gov/documents/2025/07/01/2025-12195/

10 Congressional Research Service. Overview of the Medicare Wasteful and Inappropriate Service Reduction (WISeR) Model, IF13133. https://www.congress.gov/crs-product/IF13133

11 Noridian Healthcare Solutions. WISeR Model - Arizona and Washington Providers and Suppliers, JF Part B. https://med.noridianmedicare.com/web/jfb/cert-reviews/pre-claim/wiser-model

12 Centers for Medicare & Medicaid Services. National Correct Coding Initiative Policy Manual for Medicare Services, Chapter IV (Surgery: Musculoskeletal System). https://www.cms.gov/medicare/coding-billing/national-correct-coding-initiative-ncci-edits

13 Centers for Medicare & Medicaid Services. Medicare Physician Fee Schedule. https://www.cms.gov/medicare/payment/fee-schedules/physician

14 Centers for Medicare & Medicaid Services. Ambulatory Surgical Center Payment. https://www.cms.gov/medicare/payment/prospective-payment-systems/ambulatory-surgical-center-asc

Utilization management vendor guidelines

1 eviCore by Evernorth. CMM-312: Knee Surgery - Arthroscopic and Open Procedures, Comprehensive Musculoskeletal Management Guidelines V2.0.2025, effective March 7, 2026. https://www.evicore.com/provider/clinical-guidelines

2 Carelon Medical Benefits Management. Clinical Appropriateness Guidelines: Joint Surgery, Doc ID MSK02-1125.1, effective November 15, 2025. https://guidelines.carelonmedicalbenefitsmanagement.com/joint-surgery-2025-11-15/

3 Carelon Medical Benefits Management. Current Musculoskeletal Guidelines. https://guidelines.carelonmedicalbenefitsmanagement.com/current-musculoskeletal-guidelines/

4 Evolent Health / National Imaging Associates. Clinical Guideline: Knee Arthroscopy, NIA_CG_316. https://www.evolent.com/

5 Cohere Health. Clinical intelligence and prior authorization platform. https://www.coherehealth.com/

6 TurningPoint Healthcare Solutions. Surgical quality and utilization management programs. https://www.turningpoint-healthcare.com/

7 NaviNet (NantHealth). Provider portal and authorization workflow. https://navinet.navimedix.com/

Commercial payer policies

1 Aetna. Clinical Policy Bulletin 0673: Knee Arthroscopy / Osteoarthritis of the Knee: Selected Treatments. https://www.aetna.com/cpb/medical/data/600_699/0673.html

2 UnitedHealthcare. Surgery of the Knee - Commercial and Individual Exchange Medical Policy, effective June 1, 2026. https://www.uhcprovider.com/content/dam/provider/docs/public/policies/comm-medical-drug/surgery-knee.pdf

3 UnitedHealthcare. Joint Procedures - Medicare Advantage Medical Policy. https://www.uhcprovider.com/content/dam/provider/docs/public/policies/medadv-mp/joint-procedures.pdf

4 UnitedHealthcare. Medical and Drug Policies for UnitedHealthcare Commercial Plans. https://www.uhcprovider.com/en/policies-protocols/commercial-policies/commercial-medical-drug-policies.html

5 Cigna Healthcare. Medical Coverage Policies - Musculoskeletal. https://www.cigna.com/health-care-providers/coverage-and-claims/policies

6 Humana. Medical Coverage Policies. https://provider.humana.com/coverage-claims/medical-resources

7 Elevance Health / Anthem. Medical Policies and Clinical Utilization Management Guidelines. https://www.anthem.com/provider/policies/

8 Blue Cross Blue Shield Association. Evidence Street and plan-level medical policy. https://www.bcbs.com/

Professional societies and clinical practice guidelines

1 American Academy of Orthopaedic Surgeons. Management of Osteoarthritis of the Knee (Non-Arthroplasty) Evidence-Based Clinical Practice Guideline. https://www.aaos.org/quality/

2 American Academy of Orthopaedic Surgeons. Clinical Practice Guidelines. https://www.aaos.org/quality/quality-programs/

3 Arthroscopy Association of North America. https://www.aana.org/

4 American Orthopaedic Society for Sports Medicine. https://www.sportsmed.org/

5 American Medical Association. CPT Editorial Panel and CPT Assistant. https://www.ama-assn.org/practice-management/cpt

6 AAPC. Coding guidance for knee arthroscopy and National Correct Coding Initiative application. https://www.aapc.com/

Peer-reviewed literature

1 Moseley JB, O'Malley K, Petersen NJ, et al. A controlled trial of arthroscopic surgery for osteoarthritis of the knee. N Engl J Med. 2002;347(2):81-88. https://www.nejm.org/

2 Kirkley A, Birmingham TB, Litchfield RB, et al. A randomized trial of arthroscopic surgery for osteoarthritis of the knee. N Engl J Med. 2008;359(11):1097-1107. https://www.nejm.org/

3 Sihvonen R, Paavola M, Malmivaara A, et al; FIDELITY Investigators. Arthroscopic partial meniscectomy versus placebo surgery for a degenerative meniscus tear: a 2-year follow-up of the randomised controlled trial. Ann Rheum Dis. 2018;77(2):188-195. https://ard.bmj.com/

4 Kise NJ, Risberg MA, Stensrud S, et al. Exercise therapy versus arthroscopic partial meniscectomy for degenerative meniscal tear in middle aged patients: randomised controlled trial with two year follow-up. BMJ. 2016;354:i3740. https://www.bmj.com/

5 Noorduyn JCA, van de Graaf VA, Willigenburg NW, et al. Effect of physical therapy vs arthroscopic partial meniscectomy in people with degenerative meniscal tears: five-year follow-up of the ESCAPE randomized clinical trial. JAMA Netw Open. 2022;5(7):e2220394. https://jamanetwork.com/

6 Siemieniuk RAC, Harris IA, Agoritsas T, et al. Arthroscopic surgery for degenerative knee arthritis and meniscal tears: a clinical practice guideline. BMJ. 2017;357:j1982. https://www.bmj.com/

7 O'Connor D, Johnston RV, Brignardello-Petersen R, et al. Arthroscopic surgery for degenerative knee disease (osteoarthritis including degenerative meniscal tears). Cochrane Database Syst Rev. 2022;3:CD014328. https://www.cochranelibrary.com/

8 Sihvonen R, Englund M, Turkiewicz A, Jarvinen TLN. Mechanical symptoms as an indication for knee arthroscopy in patients with degenerative meniscus tear: a prospective cohort study. Osteoarthritis Cartilage. 2016;24(8):1367-1375. https://pubmed.ncbi.nlm.nih.gov/27038490/

9 Krych AJ, Reardon PJ, Johnson NR, et al. Non-operative management of medial meniscus posterior horn root tears is associated with worsening arthritis and poor clinical outcome at 5-year follow-up. Knee Surg Sports Traumatol Arthrosc. 2017;25(2):383-389. https://link.springer.com/

10 Eseonu KC, Neale J, Lyons A, Kluzek S. Are outcomes of acute meniscus root tear repair better than debridement or nonoperative management? A systematic review. Am J Sports Med. 2022;50(11):3130-3139. https://journals.sagepub.com/home/ajs

11 Kohn MD, Sassoon AA, Fernando ND. Classifications in brief: Kellgren-Lawrence classification of osteoarthritis. Clin Orthop Relat Res. 2016;474(8):1886-1893. https://journals.lww.com/clinorthop/

12 Campbell AB, Knopp MV, Kolovich GP, et al. Preoperative MRI underestimates articular cartilage defect size compared with findings at arthroscopic knee surgery. Am J Sports Med. 2013;41(3):590-595. https://journals.sagepub.com/home/ajs

13 Feeley BT, Lau BC. Biomechanics and clinical outcomes of partial meniscectomy. J Am Acad Orthop Surg. 2018;26(24):853-863. https://journals.lww.com/jaaos/

14 Kocher MS, Logan CA, Kramer DE. Discoid lateral meniscus in children: diagnosis, management, and outcomes. J Am Acad Orthop Surg. 2017;25(11):736-743. https://journals.lww.com/jaaos/

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Procedure Guide

Reading Recommendations

• For surgeons and advanced practice providers: the BMJ Rapid Recommendation on arthroscopic surgery for degenerative knee disease, and the 2022 Cochrane review. Together they define the evidentiary environment every payer criteria set is built on.
• For prior authorization specialists: read the governing guideline for your top three payers end to end once per year, not just the criteria bullets. The definitions section is where the operative distinctions live.
• For revenue cycle leaders: Chapter IV of the National Correct Coding Initiative Policy Manual, specifically the knee arthroscopy discussion. It is the authoritative source for the chondroplasty and loose body bundling rules.
• For practice administrators in the six WISeR states: the WISeR Model Provider and Supplier Operational Guide, including Appendix A, and the CMS frequently asked questions document.
• For compliance officers: NCD 150.9 in the Medicare National Coverage Determinations Manual, read alongside the associated billing and coding articles.
• For coders: the current CPT guidelines preceding the arthroscopy section, with particular attention to the separate procedure designations and the inclusive language embedded in the meniscectomy descriptors.

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Procedure Guide

Related GoHealthcare Resources

Available through the GoHealthcare Practice Solutions Knowledge Center at https://www.gohealthcarellc.com.

Resource	Relationship to This Guide
ACL Reconstruction Procedure Guide	Detailed criteria for CPT 29888, including instability documentation, graft selection considerations, and lateral extra-articular tenodesis augmentation
PCL Reconstruction Procedure Guide	Detailed criteria for CPT 29889, including stress radiograph thresholds
Meniscus Repair Procedure Guide	Expanded treatment of repair versus resection, root tear pathways, and all-inside fixation devices
Partial Knee Arthroplasty Procedure Guide	Unicompartmental criteria and the arthroscopy-to-arthroplasty decision boundary
Total Knee Arthroplasty Procedure Guide	Criteria for the arthritic knee that falls outside the arthroscopy pathway
Facet Joint Interventions Batch (P001-P005)	Companion interventional pain management guides sharing the same standard
Epidural Steroid Injection Batch (P006-P012)	Includes detailed treatment of the WISeR Model as applied to interventional pain management
Lumbar Spine Surgical Procedures Series	Microdiscectomy, laminectomy, laminotomy, foraminotomy, and fusion guides
GoHealthcare Revenue Cycle Knowledge Center	Fee schedules, payment methodologies, relative value units, medically unlikely edit values, and detailed reimbursement analysis
GoHealthcare Prior Authorization Playbook	Cross-procedure workflow standards, criteria-mapped submission templates, and denial analytics frameworks
GoHealthcare AI Governance Framework	Governance standards for AI-assisted documentation and authorization tooling, including payer content licensing considerations

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Procedure Guide

Recommended Downloads

Planned resource recommendations. Availability should be confirmed before publication or linked distribution.

• Knee Arthroscopy Prior Authorization Checklist (one page, print-ready)
• Conservative Care Ledger Template (structured, dated)
• Knee Evaluation Documentation Template with mandatory Kellgren-Lawrence and mechanical symptom fields
• Criteria-Mapped Submission Cover Page Template
• Knee Arthroscopy Payer Matrix Worksheet (plan-level)
• Operative Note Compartment Documentation Standard
• Knee Arthroscopy Coding Bundling Quick Reference Card
• Medical Necessity Statement Template
• Appeal Letter Framework for Knee Arthroscopy Denials
• WISeR Model Readiness Checklist for the six model states
• Pre-Bill Reconciliation Worksheet

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Procedure Guide

Educational Disclaimer, Terms of Use, and Limitations

Please read in full. This section governs the use of this document.

Purpose and scope

This document is published by GoHealthcare Practice Solutions as part of the GoHealthcare MSK Specialty Procedure Library and is intended solely for educational and operational reference purposes for healthcare professionals. It is designed to help clinical, administrative, prior authorization, utilization management, coding, and revenue cycle personnel understand the operational, documentation, payer policy, and reimbursement environment surrounding this procedure. It is not clinical advice, medical advice, legal advice, coding advice, billing advice, reimbursement advice, compliance advice, or financial advice, and it must not be used as a substitute for any of them.

Not a clinical or procedural training resource

This document is not a procedural technique manual, a surgical training resource, a physician training guide, or a substitute for specialty society procedural manuals, clinical textbooks, residency or fellowship training, or supervised clinical experience. It does not provide surgical or interventional technique instruction, instrument or portal placement guidance, imaging guidance instruction, medication or anesthetic dosing, or intraoperative decision support. It does not replace the independent clinical judgment of a qualified, licensed healthcare professional who has personally evaluated the individual patient. Treatment decisions must be made by the treating clinician based on the specific facts of the individual patient.

No professional relationship is created

Reading, downloading, distributing, or relying upon this document does not create a physician-patient relationship, an attorney-client relationship, an accountant-client relationship, a consultant-client relationship, or any other professional, fiduciary, or advisory relationship between the reader and GoHealthcare Practice Solutions, its officers, its employees, or the author. This document is not directed to patients or consumers and should not be used by patients to make personal

healthcare decisions. Patients should consult their own treating physician.

No guarantee of coverage, authorization, or payment

Nothing in this document guarantees, promises, or predicts that any payer will approve a prior authorization request, determine a service to be medically necessary, cover a service, or pay a claim. Coverage and payment determinations are made exclusively by the applicable payer under the terms of the individual member benefit plan document, applicable federal and state law, and the payer's own policies and criteria in effect on the date of service. Benefit plan documents supersede clinical policies and utilization management guidelines. GoHealthcare Practice Solutions makes no representation or warranty regarding the outcome of any authorization request, claim, appeal, audit, or dispute.

Time sensitivity and the reader's independent verification obligation

Healthcare coverage policy is dynamic. National and Local Coverage Determinations, Local Coverage Articles, utilization management guideline versions and effective dates, commercial medical policies, CPT and HCPCS Level II code sets and descriptors, ICD-10-CM codes and specificity requirements, National Correct Coding Initiative edits, medically unlikely edit values, ambulatory surgery center covered procedures lists, delegated vendor arrangements, CMS demonstration and innovation models, and state and federal regulations all change frequently - often on short notice and sometimes retroactively. They also vary materially by payer, by plan, by product line, by state, by Medicare Administrative Contractor jurisdiction, and by date of service.

The reader bears sole responsibility for independently verifying every statement in this document against the governing payer policy version in effect for the specific member and date of service, the current official code sets, and current primary regulatory sources, before relying on it for any clinical, documentation, coding, billing, authorization, appeal, or business decision. Policies and codes change. Verify current primary sources before use.

Coding and billing limitations

Code references and descriptors in this document are abbreviated, paraphrased, or summarized for readability and are not a substitute for the current, complete, official CPT, HCPCS Level II, or ICD-10-CM code sets and their accompanying guidelines, conventions, instructional notes, and parenthetical instructions. Code selection is a professional judgment that must be made by a qualified coding professional based on the complete documentation in the individual medical record.

This document was prepared without live access to proprietary, subscription coding databases or encoder software, and every code and descriptor appearing in it must be independently verified by the reader against the current official code sets before use. Nothing in this document authorizes or supports reporting any code for a service that was not actually performed, not medically necessary, or not supported by the documentation in the medical record. The provider and the submitting entity remain solely responsible for the accuracy, completeness, and truthfulness of every claim submitted, and for compliance with the False Claims Act, the Civil Monetary Penalties Law, the Anti-Kickback Statute, the Stark Law, and all other applicable federal and state laws and payer contract terms.

Payer policy content is summarized, not reproduced

Payer, health plan, and utilization management vendor criteria described in this document have been synthesized, summarized, and restated in GoHealthcare's own words for educational purposes. Proprietary payer guideline language has not been reproduced. Summaries are necessarily incomplete, may omit conditions, exceptions, definitions, and plan-specific variations, and may not reflect the version of the guideline in effect for a particular member or date of service. Readers must consult the payer's own current, complete policy document and, where a determination has been issued, must request the specific criteria set applied. Certain payers and vendors publish terms restricting the reproduction, distribution, or automated or artificial intelligence processing of their guideline content; readers who build internal tools incorporating such content should obtain legal review.

No endorsement; third-party names and products

References to manufacturers, devices, implants, biologics, software, vendors, health plans, professional societies, journals, or other third parties are provided for identification and educational purposes only and do not constitute an

endorsement, recommendation, certification, or warranty by GoHealthcare Practice Solutions, nor do they imply any affiliation, sponsorship, partnership, or relationship with those parties. GoHealthcare Practice Solutions does not warrant the FDA clearance or approval status, labeled indications, safety, efficacy, availability, or coverage status of any product referenced. Product regulatory status and labeling change over time and must be verified against the manufacturer's current instructions for use and the FDA's official databases.

Authorship, methodology, and technology disclosure

This document was developed by GoHealthcare Practice Solutions, under the leadership of Pinky Maniri, Founder and Chief Executive Officer, using structured research of publicly available primary sources including CMS coverage documents, published payer and utilization management guidelines, professional society guidance, and peer-reviewed literature, together with GoHealthcare's operational experience supporting musculoskeletal specialty practices. Artificial intelligence tools were used to assist with research synthesis, drafting, and document production under human editorial direction and review. Artificial intelligence-assisted content is subject to error, omission, and outdated source material, and all such content remains subject to human editorial review and quality assurance. GoHealthcare Practice Solutions does not use artificial intelligence to make, and this document does not constitute, any coverage, medical necessity, or clinical determination for any individual patient.

External links

This document contains links to third-party websites provided as a convenience. GoHealthcare Practice Solutions does not control and is not responsible for the content, accuracy, availability, security, or privacy practices of any third-party site. Links may change or become inactive without notice, and inclusion of a link does not constitute endorsement.

Jurisdictional and program variation

Requirements differ materially across Original Medicare, Medicare Advantage, Medicaid fee-for-service, Medicaid managed care, commercial group and individual products, self-funded plans governed by ERISA, federal employee programs, TRICARE, Veterans Affairs Community Care, workers' compensation, and automobile and no-fault carriers. State law, state Medicaid policy, state workers' compensation treatment guidelines, state utilization review statutes, and state appeal and external review rights vary. This document does not address the requirements of any specific jurisdiction, program, or contract.

Limitation of liability

This document is provided "as is" and "as available," without warranty of any kind, express or implied, including without limitation any implied warranty of accuracy, completeness, currency, merchantability, fitness for a particular purpose, or non-infringement. To the fullest extent permitted by applicable law, GoHealthcare Practice Solutions, its affiliates, officers, employees, contractors, and the author disclaim all liability for any loss, damage, claim, penalty, denial, recoupment, audit finding, or expense of any kind - whether direct, indirect, incidental, consequential, special, punitive, or exemplary - arising out of or related to the use of, reliance upon, or inability to use this document or any information contained in it. Use of this document is entirely at the reader's own risk.

Trademarks and copyright

CPT is a registered trademark of the American Medical Association. CPT five-digit codes, nomenclature, descriptors, and other data are copyright of the American Medical Association, all rights reserved. The American Medical Association does not directly or indirectly practice medicine or dispense medical services and assumes no liability for data contained or not contained herein. HCPCS Level II and ICD-10-CM are maintained by the Centers for Medicare & Medicaid Services and the National Center for Health Statistics. All other trademarks, service marks, trade names, product names, policy numbers, and guideline identifiers referenced are the property of their respective owners.

(c) 2026 GoHealthcare Practice Solutions. All rights reserved. GoHealthcare MSK Specialty Procedure Library is a trademark of GoHealthcare Practice Solutions. This document may be viewed, downloaded, and shared internally within a healthcare organization for non-commercial educational purposes with attribution intact. It may not be sold, sublicensed, republished, incorporated into a commercial product or training program, or used to train or fine-tune any artificial intelligence or machine learning model without the prior written permission of GoHealthcare Practice Solutions.

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Developed by

Pinky Maniri

MSc, BSc, CRCR, CSAPM, CSPPM, CSBI, CSPR, CSAF, Certified in Healthcare A.I. Governance

Founder and Chief Executive Officer, GoHealthcare Practice Solutions

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Professional and Educational Disclaimer

This resource is intended for professional education and healthcare-operations guidance. It is not medical, legal, coding, billing, reimbursement, compliance, or payer-contract advice and is not a procedural technique manual. It does not replace clinical judgment, current official coding publications, payer policies, member benefit documents, Medicare guidance, MAC instructions, facility policy, or qualified professional review.

Coverage, authorization, coding, modifiers, units, payment, site-of-service requirements, and clinical criteria vary by payer, plan, product, employer group, jurisdiction, delegated reviewer, provider, facility, and date of service. Nothing in this guide guarantees authorization, coverage, reimbursement, or a specific claim determination. CPT is a registered trademark of the American Medical Association.