HCPCS Level II · Orthotic and prosthetic procedures and devices
L5991Addition to lower extremity prostheses, osseointegrated external prosthetic connector
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About L5991
L5991 is an HCPCS Level II code in the L series (orthotic and prosthetic procedures and devices), describing addition to lower extremity prostheses, osseointegrated external prosthetic connector.
It was added to HCPCS effective 10/01/2023.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Low pros ext osseo connector
- Date added
- 10/01/2023
- Action effective
- 10/01/2023
- BETOS
- D1F
Related L59xx codes
- L5910Addition, endoskeletal system, below knee, alignable system
- L5920Addition, endoskeletal system, above knee or hip disarticulation, alignable system
- L5925Addition, endoskeletal system, above knee, knee disarticulation or hip disarticulation, manual lock
- L5926Addition to lower extremity prosthesis, endoskeletal, knee disarticulation, above knee, hip disarticulation, positional rotation unit, any type
- L5930Addition, endoskeletal system, high activity knee control frame
- L5940Addition, endoskeletal system, below knee, ultra-light material (titanium, carbon fiber or equal)
- L5950Addition, endoskeletal system, above knee, ultra-light material (titanium, carbon fiber or equal)
- L5960Addition, endoskeletal system, hip disarticulation, ultra-light material (titanium, carbon fiber or equal)
- L5961Addition, endoskeletal system, polycentric hip joint, pneumatic or hydraulic control, rotation control, with or without flexion and/or extension control
- L5962Addition, endoskeletal system, below knee, flexible protective outer surface covering system
- L5964Addition, endoskeletal system, above knee, flexible protective outer surface covering system
- L5966Addition, endoskeletal system, hip disarticulation, flexible protective outer surface covering system
Common questions about L5991
Is HCPCS L5991 still valid?
- Yes. L5991 is active in the CMS October 2026 HCPCS file.
Does Medicare cover L5991?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.