HCPCS Level II · Orthotic and prosthetic procedures and devices
L3999Upper limb orthosis, not otherwise specified
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About L3999
L3999 is an HCPCS Level II code in the L series (orthotic and prosthetic procedures and devices), describing upper limb orthosis, not otherwise specified.
It was added to HCPCS effective 01/01/1982, and its current record took effect 01/01/1998.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Upper limb orthosis nos
- Date added
- 01/01/1982
- Action effective
- 01/01/1998
- BETOS
- D1F
Related L39xx codes
- L3900Wrist hand finger orthosis, dynamic flexor hinge, reciprocal wrist extension/ flexion, finger flexion/extension, wrist or finger driven, custom fabricated
- L3901Wrist hand finger orthosis, dynamic flexor hinge, reciprocal wrist extension/ flexion, finger flexion/extension, cable driven, custom fabricated
- L3904Wrist hand finger orthosis, external powered, electric, custom fabricated
- L3905Wrist hand orthosis, includes one or more nontorsion joints, elastic bands, turnbuckles, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3906Wrist hand orthosis, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3908Wrist hand orthosis, wrist extension control cock-up, non molded, prefabricated, off-the-shelf
- L3912Hand finger orthosis (hfo), flexion glove with elastic finger control, prefabricated, off-the-shelf
- L3913Hand finger orthosis, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3915Wrist hand orthosis, includes one or more nontorsion joint(s), elastic bands, turnbuckles, may include soft interface, straps, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L3916Wrist hand orthosis, includes one or more nontorsion joint(s), elastic bands, turnbuckles, may include soft interface, straps, prefabricated, off-the-shelf
- L3917Hand orthosis, metacarpal fracture orthosis, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L3918Hand orthosis, metacarpal fracture orthosis, prefabricated, off-the-shelf
Common questions about L3999
Is HCPCS L3999 still valid?
- Yes. L3999 is active in the CMS October 2026 HCPCS file.
Does Medicare cover L3999?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.