L4631 – Ankle foot orthosis, walking boot type, varus/valgus correction, rocker bottom, anterior tibial shell, soft interface, custom arch support, plastic or other material, includes straps and closures, custom fabricated
HCPCS Level II code · L codes: Orthotic and Prosthetic Procedures and Devices
HCPCS codeL4631
- Long description
- Ankle foot orthosis, walking boot type, varus/valgus correction, rocker bottom, anterior tibial shell, soft interface, custom arch support, plastic or other material, includes straps and closures, custom fabricated
- Short description
- Afo, walk boot type, cus fab
- Pricing indicator
38Orthotics, prosthetics, prosthetic devices & vision services- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
D1FProsthetic/Orthotic devices- Added
- January 1, 2011
- Last change
- January 1, 2011 – No change
Frequently asked questions
What is HCPCS code L4631?
L4631 is a HCPCS Level II code for ankle foot orthosis, walking boot type, varus/valgus correction, rocker bottom, anterior tibial shell, soft interface, custom arch support, plastic or other material, includes straps and closures, custom fabricated.
Does Medicare cover L4631?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby L codes
- L4370 – Pneumatic full leg splint, prefabricated, off-the-shelf
- L4386 – Walking boot, non-pneumatic, with or without joints, with or without interface material, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L4387 – Walking boot, non-pneumatic, with or without joints, with or without interface material, prefabricated, off-the-shelf
- L4392 – Replacement, soft interface material, static afo
- L4394 – Replace soft interface material, foot drop splint
- L4396 – Static or dynamic ankle foot orthosis, including soft interface material, adjustable for fit, for positioning, may be used for minimal ambulation, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L4397 – Static or dynamic ankle foot orthosis, including soft interface material, adjustable for fit, for positioning, may be used for minimal ambulation, prefabricated, off-the-shelf
- L4398 – Foot drop splint, recumbent positioning device, prefabricated, off-the-shelf
- L5000 – Partial foot, shoe insert with longitudinal arch, toe filler
- L5010 – Partial foot, molded socket, ankle height, with toe filler
- L5020 – Partial foot, molded socket, tibial tubercle height, with toe filler
- L5050 – Ankle, symes, molded socket, sach foot
- L5060 – Ankle, symes, metal frame, molded leather socket, articulated ankle/foot
- L5100 – Below knee, molded socket, shin, sach foot
- L5105 – Below knee, plastic socket, joints and thigh lacer, sach foot
- L5150 – Knee disarticulation (or through knee), molded socket, external knee joints, shin, sach foot
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.