Medicare (CMS LCD/NCD) Ankle-Foot Orthosis (AFO) / Walking Boot prior authorization requirements (2026)
What Medicare (CMS LCD/NCD) generally requires to approve Ankle-Foot Orthosis (AFO) / Walking Boot (CPT L1902, L1906, L1940, L1970, L4360, L4361, L4396, L4397), for Medicare plans. Based on the cited policy, Medicare (CMS LCD/NCD) does not generally require prior authorization for Ankle-Foot Orthosis (AFO) / Walking Boot (CPT L1902, L1906, L1940, L1970, L4360, L4361, L4396, L4397). Confirm with Medicare (CMS LCD/NCD), as this can vary by plan.
Medical-necessity criteria Medicare (CMS LCD/NCD) generally applies
Covered under the Medicare Part B brace (DMEPOS) benefit when medically necessary for a condition of the ankle/foot requiring stabilization. No general prior authorization, BUT check the CMS DMEPOS Required Prior Authorization List for the specific L-code before dispensing - CMS periodically adds orthosis codes to the required-PA list. Must be furnished by a Medicare-enrolled DMEPOS supplier; custom-fabricated codes need documentation of why a prefabricated orthosis is insufficient. [NEEDS CLINICAL SPOT-CHECK]
Commonly required documentation
- Order/prescription, diagnosis, medical-necessity documentation (and for custom codes, why prefabricated is insufficient), proof of delivery.
How to submit
- Method: No general PA - verify the specific L-code against the CMS DMEPOS Required Prior Authorization List, then bill the DME MAC (NJ = Jurisdiction A, Noridian).
Sources & verification
Sources: CMS DMEPOS prior-authorization program (cms.gov Required Prior Authorization List, verified 2026-07-10); Medicare brace benefit (SSA 1861(s)(9)). Specific AFO LCD criteria: see the DME MAC LCD for ankle-foot orthoses - cite after reading; not cited here to avoid an unverified LCD number. Last verified 2026-07-10.
Frequently asked questions
Does Medicare (CMS LCD/NCD) require prior authorization for Ankle-Foot Orthosis (AFO) / Walking Boot?
Based on the cited policy, Medicare (CMS LCD/NCD) does not generally require prior authorization for Ankle-Foot Orthosis (AFO) / Walking Boot (CPT L1902, L1906, L1940, L1970, L4360, L4361, L4396, L4397). Confirm with Medicare (CMS LCD/NCD), as this can vary by plan.
What does Medicare (CMS LCD/NCD) require to approve Ankle-Foot Orthosis (AFO) / Walking Boot?
Covered under the Medicare Part B brace (DMEPOS) benefit when medically necessary for a condition of the ankle/foot requiring stabilization. No general prior authorization, BUT check the CMS DMEPOS Required Prior Authorization List for the specific L-code before dispensing - CMS periodically adds orthosis codes to the required-PA list. Must be furnished by a Medicare-enrolled DMEPOS supplier; cust… Always confirm against the current Medicare (CMS LCD/NCD) policy.
How long does a Medicare (CMS LCD/NCD) prior authorization take?
Turnaround varies by plan and submission method. Check the Medicare (CMS LCD/NCD) portal for current timeframes.
Submitting Ankle-Foot Orthosis (AFO) / Walking Boot to Medicare (CMS LCD/NCD)?
Praxigen checks your clinical note against these criteria before you submit and drafts a policy-cited appeal if it is denied. You review and submit; nothing is sent automatically.