L5657 — Addition to lower extremity prosthesis, manual/automated adjustable air, fluid, gel or equal socket insert for limb volume management, any materials
L5657 is a HCPCS Level II code for addition to lower extremity prosthesis, manual/automated adjustable air, fluid, gel or equal socket insert for limb volume management, any materials. It belongs to the Orthotic and Prosthetic Procedures and Devices section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for L5657
- Long descriptor
- Addition to lower extremity prosthesis, manual/automated adjustable air, fluid, gel or equal socket insert for limb volume management, any materials
- Short descriptor
- Add low ext man aut vol any
- Added
- October 1, 2025
- BETOS
- D1F
- Pricing indicator
- 38 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Orthotics, prosthetics, prosthetic devices and vision services. Price subject to floors and ceilings.
Codes adjacent to L5657
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L5657 is not quite right, the correct code is very often within a few positions of it.
- L5649Addition to lower extremity, ischial containment/narrow m-l socket
- L5650Additions to lower extremity, total contact, above knee or knee disarticulation socket
- L5651Addition to lower extremity, above knee, flexible inner socket, external frame
- L5652Addition to lower extremity, suction suspension, above knee or knee disarticulation socket
- L5653Addition to lower extremity, knee disarticulation, expandable wall socket
- L5654Addition to lower extremity, socket insert, symes, (kemblo, pelite, aliplast, plastazote or equal)
- L5655Addition to lower extremity, socket insert, below knee (kemblo, pelite, aliplast, plastazote or equal)
- L5656Addition to lower extremity, socket insert, knee disarticulation (kemblo, pelite, aliplast, plastazote or equal)
- L5658Addition to lower extremity, socket insert, above knee (kemblo, pelite, aliplast, plastazote or equal)
- L5661Addition to lower extremity, socket insert, multi-durometer symes
- L5665Addition to lower extremity, socket insert, multi-durometer, below knee
- L5666Addition to lower extremity, below knee, cuff suspension
- L5668Addition to lower extremity, below knee, molded distal cushion
- L5670Addition to lower extremity, below knee, molded supracondylar suspension ('pts' or similar)
- L5671Addition to lower extremity, below knee / above knee suspension locking mechanism (shuttle, lanyard or equal), excludes socket insert
- L5672Addition to lower extremity, below knee, removable medial brim suspension
Questions about L5657
What is HCPCS code L5657?
L5657 is a HCPCS Level II code for addition to lower extremity prosthesis, manual/automated adjustable air, fluid, gel or equal socket insert for limb volume management, any materials. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L5657?
The CMS HCPCS file marks L5657 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.