CPT 29907, in plain terms, covers Surgeon fuses the subtalar joint arthroscopically to eliminate pain and abnormal motion between the ankle and heel bone. CPT 29907 is referenced in 3 tracked payer policy changes from Aetna. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for CPT 29907 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.
Official descriptor: CPT 29907 on AAPC
Aetna has classified subtalar implants as experimental, investigational, or unproven for all indications including flatfoot deformity, clubfoot, foot drop, and subtalar instability. This means claims for subtalar implant procedures and associated CPT codes will not be covered. Billing teams must immediately deny or reject claims for these procedures and communicate non-coverage to providers and patients.
Aetna's CPB 0669 (reviewed 2026-10-09) classifies subtalar implants for foot deformity treatment as experimental, investigational, or unproven across multiple indications (flatfoot, club foot, subtalar instability, foot drop) and for all named implant devices. CPT codes 0335T, 0510T, 0511T and HCPCS code S2117 are not covered for these indications. This is a coverage denial policy affecting subtalar arthroereisis procedures.
Aetna considers electrothermal arthroscopy, also called electrothermally-assisted capsule shift or capsulorrhaphy (ETAC), of the joint capsule, ligaments, or tendons experimental, investigational, or unproven for all indications. The listed indications include shoulder instability, Bankart lesions, frozen shoulder, ligament tears and meniscal injury of the knee, partial scapholunate ligament tears, temporomandibular joint dislocation, and wrist injuries. HCPCS S2300 (arthroscopy, shoulder, with thermally-induced capsulorrhaphy) is listed as not covered for the indications in the policy.
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