L3999 – Upper limb orthosis, not otherwise specified
HCPCS Level II code · L codes: Orthotic and Prosthetic Procedures and Devices
HCPCS codeL3999
- Long description
- Upper limb orthosis, not otherwise specified
- Short description
- Upper limb orthosis nos
- Pricing indicator
46Priced by carrier (not otherwise classified / individual determination)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
D1FProsthetic/Orthotic devices- Added
- January 1, 1982
- Last change
- January 1, 1998 – No change
Frequently asked questions
What is HCPCS code L3999?
L3999 is a HCPCS Level II code for upper limb orthosis, not otherwise specified.
Does Medicare cover L3999?
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
- L3976 – Shoulder elbow wrist hand finger orthosis, abduction positioning (airplane design), thoracic component and support bar, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3977 – Shoulder elbow wrist hand finger orthosis, shoulder cap design, includes one or more nontorsion joints, elastic bands, turnbuckles, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3978 – Shoulder elbow wrist hand finger orthosis, abduction positioning (airplane design), thoracic component and support bar, includes one or more nontorsion joints, elastic bands, turnbuckles, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3980 – Upper extremity fracture orthosis, humeral, prefabricated, includes fitting and adjustment
- L3981 – Upper extremity fracture orthosis, humeral, prefabricated, includes shoulder cap design, with or without joints, forearm section, may include soft interface, straps, includes fitting and adjustments
- L3982 – Upper extremity fracture orthosis, radius/ulnar, prefabricated, includes fitting and adjustment
- L3984 – Upper extremity fracture orthosis, wrist, prefabricated, includes fitting and adjustment
- L3995 – Addition to upper extremity orthosis, sock, fracture or equal, each
- L4000 – Replace girdle for spinal orthosis (ctlso or so)
- L4002 – Replacement strap, any orthosis, includes all components, any length, any type
- L4010 – Replace trilateral socket brim
- L4020 – Replace quadrilateral socket brim, molded to patient model
- L4030 – Replace quadrilateral socket brim, custom fitted
- L4040 – Replace molded thigh lacer, for custom fabricated orthosis only
- L4045 – Replace non-molded thigh lacer, for custom fabricated orthosis only
- L4050 – Replace molded calf lacer, for custom fabricated orthosis only
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.