Podiatry Prior Authorization and Denial Guide
Prior authorization requirements, denial patterns, and appeal strategies for podiatric services, grounded in Aetna CPB #0629 (bunionectomy), CPB #0636 (hammertoe repair), CPB #0451 (orthotic devices), UHC Policy 2026T0624O, CMS Medicare Benefit Policy Manual Chapter 15 §290, and CMS MLN SE1338 regarding routine foot care.
Routine foot care under Medicare (CPT 11720–11721, 11055–11057): Medicare covers routine foot care only under specific clinical circumstances — when the patient has a systemic condition (diabetes, peripheral arterial disease, peripheral neuropathy) that creates a medical necessity for professional foot care. The Class Findings criteria require documentation of the systemic condition and findings indicating that routine foot care involves risks not present in the normal population. Without documentation of qualifying systemic conditions, routine foot care is not covered and represents a CO-97 bundling or CO-96 non-covered denial.
Bunionectomy and hammertoe repair: Aetna CPB #0629 covers bunionectomy when the deformity causes functional impairment — pain with ambulation, difficulty fitting standard footwear, or gait disturbance — documented by clinical exam and weight-bearing X-rays. Hammertoe repair (CPT 28285) under Aetna CPB #0636 requires documentation of conservative treatment failure (padding, shoe modifications, accommodative orthotics) and pain or functional limitation. Custom orthotic devices (CPT A5500–A5513, L3000 series) require prior authorization for most commercial payers and Medicare DME — documentation must include the qualifying diagnosis, failed conservative treatment, and for diabetic shoe inserts, the Class Findings qualifying examination.