HCPCS Level II · Orthotic and prosthetic procedures and devices
L5840Addition, endoskeletal knee/shin system, 4-bar linkage or multiaxial, pneumatic swing phase control
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About L5840
L5840 is an HCPCS Level II code in the L series (orthotic and prosthetic procedures and devices), describing addition, endoskeletal knee/shin system, 4-bar linkage or multiaxial, pneumatic swing phase control.
It was added to HCPCS effective 01/01/1994, and its current record took effect 01/01/1999.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Multi-axial knee/shin system
- Date added
- 01/01/1994
- Action effective
- 01/01/1999
- BETOS
- D1F
Related L58xx codes
- L5810Addition, endoskeletal knee-shin system, single axis, manual lock
- L5811Addition, endoskeletal knee-shin system, single axis, manual lock, ultra-light material
- L5812Addition, endoskeletal knee-shin system, single axis, friction swing and stance phase control (safety knee)
- L5814Addition, endoskeletal knee-shin system, polycentric, hydraulic swing phase control, mechanical stance phase lock
- L5816Addition, endoskeletal knee-shin system, polycentric, mechanical stance phase lock
- L5818Addition, endoskeletal knee-shin system, polycentric, friction swing, and stance phase control
- L5822Addition, endoskeletal knee-shin system, single axis, pneumatic swing, friction stance phase control
- L5824Addition, endoskeletal knee-shin system, single axis, fluid swing phase control
- L5826Addition, endoskeletal knee-shin system, single axis, hydraulic swing phase control, with miniature high activity frame
- L5827Endoskeletal knee-shin system, single axis, electromechanical swing and stance phase control, with or without shock absorption and stance extension damping
- L5828Addition, endoskeletal knee-shin system, single axis, fluid swing and stance phase control
- L5830Addition, endoskeletal knee-shin system, single axis, pneumatic/ swing phase control
Common questions about L5840
Is HCPCS L5840 still valid?
- Yes. L5840 is active in the CMS October 2026 HCPCS file.
Does Medicare cover L5840?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.