L5711 — Additions exoskeletal knee-shin system, single axis, manual lock, ultra-light material
L5711 is a HCPCS Level II code for additions exoskeletal knee-shin system, single axis, manual lock, ultra-light material. 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.
Medically Unlikely Edits — units per day
The most units of L5711 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 2 units MAI 2 — Date of Service Edit: Policy · Anatomic Consideration
- DME supplier
- 2 units MAI 2 — Date of Service Edit: Policy · Anatomic Consideration
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for L5711
- Long descriptor
- Additions exoskeletal knee-shin system, single axis, manual lock, ultra-light material
- Short descriptor
- Knee-shin exo mnl lock ultra
- Added
- January 1, 1988
- 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 L5711
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L5711 is not quite right, the correct code is very often within a few positions of it.
- L5701Replacement, socket, above knee/knee disarticulation, including attachment plate, molded to patient model
- L5702Replacement, socket, hip disarticulation, including hip joint, molded to patient model
- L5703Ankle, symes, molded to patient model, socket without solid ankle cushion heel (sach) foot, replacement only
- L5704Custom shaped protective cover, below knee
- L5705Custom shaped protective cover, above knee
- L5706Custom shaped protective cover, knee disarticulation
- L5707Custom shaped protective cover, hip disarticulation
- L5710Addition, exoskeletal knee-shin system, single axis, manual lock
- L5712Addition, exoskeletal knee-shin system, single axis, friction swing and stance phase control (safety knee)
- L5714Addition, exoskeletal knee-shin system, single axis, variable friction swing phase control
- L5716Addition, exoskeletal knee-shin system, polycentric, mechanical stance phase lock
- L5718Addition, exoskeletal knee-shin system, polycentric, friction swing and stance phase control
- L5722Addition, exoskeletal knee-shin system, single axis, pneumatic swing, friction stance phase control
- L5724Addition, exoskeletal knee-shin system, single axis, fluid swing phase control
- L5726Addition, exoskeletal knee-shin system, single axis, external joints fluid swing phase control
- L5728Addition, exoskeletal knee-shin system, single axis, fluid swing and stance phase control
Questions about L5711
What is HCPCS code L5711?
L5711 is a HCPCS Level II code for additions exoskeletal knee-shin system, single axis, manual lock, ultra-light material. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L5711?
The CMS HCPCS file marks L5711 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.