CurrentColorado Rocky Mountain Health PlansPolicy 2026T0622N

Osteochondral Allograft/Autograft Transplantation for Ankle (OAT) — Coverage Criteria

Defines medical policy on osteochondral allograft or autograft transplantation for cartilage defects of the ankle (talus) and related ankle surgical procedures; applies to Colorado Rocky Mountain Health Plans/UHC commercial and individual exchange members as referenced in the document.

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicyOsteochondral Allograft/Autograft Transplantation for Ankle (OAT) — Coverage Criteria

Policy CodePolicy 2026T0622N

Change TypeNo material change

Effective DateJan 1, 2026

Next Review Date

Key ActionVerify member benefits and, when applicable, obtain prior authorization using InterQual clinical criteria for ankle surgical procedures.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

insufficientOAT safety and efficacy conclusion

AOFAS 2022Professional society note

50 studiesSystematic review sample

2013–2014HTA conclusions

Coverage Criteria

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Covered procedures and OAT not medically necessary

Covered when InterQual clinical criteria are met for ankle surgical procedures; osteochondral transplantation (OAT/OCA) is addressed separately.

Ankle surgery coverage: Surgery of the ankle is proven and medically necessary in certain circumstances and is governed by InterQual clinical procedures for arthrodesis, arthroscopy, arthrotomy, and total joint replacement.

Refer to InterQual CP: Arthrodesis (talotibial), Arthroscopy (ankle), Arthrotomy (ankle), Total Joint Replacement (ankle) for specific clinical inclusion/exclusion

OAT / OCA not medically necessary: Osteochondral allograft or autograft transplantation (OAT/OCA) for cartilage defects of the ankle (talus) is considered unproven and not medically necessary due to insufficient quality evidence regarding safety and efficacy.

Systematic reviews and health technology assessments report mostly low-quality, retrospective studies with high risk of bias; randomized comparative data and long-term outcomes are lacking

Osteochondral allograft or autograft transplantation (OAT) for cartilage defects of the ankle is considered unproven and not medically necessary. The policy stance is based on multiple evidence assessments finding insufficient quality data to demonstrate consistent safety, efficacy, or durability for OAT in the ankle, and therefore the procedure is excluded from coverage.

Systematic reviews and health technology assessments cited by the policy identify predominantly small, retrospective studies with high risk of bias, inconsistent outcome measures, and short or variable follow-up. Notably, a recent systematic review (Correia Cardoso et al., 2024) found the majority of studies were level 4 evidence and few included comparison groups, and Hayes health technology assessments (2012–2015 updates) concluded the evidence base is inadequate to support definitive conclusions or routine use.

Osteochondral allograft or autograft transplantation is explicitly designated not medically necessary for treating cartilage defects of the ankle (talus). The policy excludes OAT from coverage because current studies provide insufficient and low-quality evidence regarding effectiveness and durability, and some reports document substantial graft failure rates requiring additional surgery.

The policy summary directs clinicians to existing InterQual criteria for covered ankle procedures but clarifies that OAT is treated separately and will not be authorized under this policy due to the NMN determination.

Coding

Applicable Procedure CPT Codes (listed)CPT

27685	Lengthening or shortening of tendon, leg or ankle; single tendon (separate procedure)
28446	Open osteochondral autograft, talus (includes obtaining graft[s])
27702	Arthroplasty, ankle; with implant (total ankle)
29891	Arthroscopy, ankle, surgical, excision of osteochondral defect of talus and/or tibia, including drilling of the defect
29892	Arthroscopically aided repair of large osteochondritis dissecans lesion, talar dome fracture, or tibial plafond fracture, with or without internal fixation (includes arthroscopy)
29894	Arthroscopy, ankle (tibiotalar and fibulotalar joints), surgical; with removal of loose body or foreign body
29895	Arthroscopy, ankle (tibiotalar and fibulotalar joints), surgical; synovectomy, partial
29897	Arthroscopy, ankle (tibiotalar and fibulotalar joints), surgical; debridement, limited
29898	Arthroscopy, ankle (tibiotalar and fibulotalar joints), surgical; debridement, extensive
29899	Arthroscopy, ankle (tibiotalar and fibulotalar joints), surgical; with ankle arthrodesis

Provider Actions & Administrative Requirements

Prior Authorization

Verify benefits and possible utilization review

Verify member-specific benefits and any applicable utilization review or prior authorization requirements before scheduling services. Benefit coverage is determined by the member's benefit plan document and may differ from this policy.

Check member-specific benefit plan document for coverage and any state or federal mandates that may apply.
Confirm whether prior authorization or InterQual-based review is required for ankle procedures (e.g., arthrodesis, arthroscopy, total ankle replacement).

Note

Member benefit governing

The member specific benefit plan document governs in the event of any conflict with this policy. Always reference the member's plan for coverage determinations and benefit limits.

If plan language differs from this policy, follow the member-specific benefit plan.
Contact the payer for plan-level exclusions, limits, or cost-sharing information.

Documentation Required

Medical records requirement

Medical records and documentation may be required to determine whether the clinical criteria for coverage are met. Submission of records does not guarantee coverage.

Provide relevant clinical notes, imaging reports, operative notes, prior conservative management documentation, and any documentation of prior authorization denials or approvals.
Retain and submit documentation demonstrating failure of conservative management when applicable (per clinical criteria and specialty guidance).

Note

Provider action

Confirm any additional administrative steps (e.g., claims submission requirements, coding guidance) with the payer prior to performing services.

Verify applicable procedure codes and diagnosis coding.
Follow payer-specific billing and claim submission rules to avoid denials.

Background

Osteoarthritis and posttraumatic arthritis of the ankle result from degenerative cartilage loss or prior injury to the talar dome and can lead to pain, joint dysfunction, osteophyte formation, and decreased joint space. Osteochondral lesions of the talus (OLT) arise from trauma or degenerative processes and are a recognized cause of persistent ankle symptoms that may prompt consideration of surgical repair.

While some surgical approaches exist to manage symptomatic OLT or ankle arthritis, including arthroscopy, arthrodesis, and arthroplasty governed by InterQual clinical criteria, the available literature on cartilage substitution techniques such as OAT shows limited and low-quality evidence. Health technology assessments and systematic reviews report small study sizes, heterogeneous techniques, and variable outcomes, supporting the policy’s conservative coverage approach.

Definitions

Osteoarthritis / Posttraumatic arthritis definition

TermOsteoarthritis / Posttraumatic arthritis

DefinitionDegenerative cartilage loss in the ankle joint causing cartilage wear, fraying, decreased joint space, painful osteophytes (bone spurs).

Posttraumatic notePosttraumatic arthritis may develop years after injury (eg, fractures or dislocations) and results from cartilage wear similar to osteoarthritis.

Osteochondral allograft/autograft transplant (OAT / OCA) definition

TermOsteochondral allograft/autograft transplant (OAT / OCA)

DefinitionSurgical transplantation of osteochondral tissue (autograft or allograft) to repair cartilage defects of the talus; classified in literature as a cartilage substitution technique.

Evidence summaryThere is insufficient quality evidence regarding the safety and efficacy of osteochondral allograft or autograft transplant; systematic reviews and HTAs report low-quality, predominantly retrospective studies and high risk of bias.

osteochondral transplantation (term reference)

Termosteochondral transplantation

EquivalentRefers to osteochondral allograft or autograft transplantation (OAT/OCA).

Supporting referenceAOFAS position statement (2022) and multiple reviews/HTAs are cited in this policy document for context and guidance.

OpenPayer