L3999 HCPCS Level II code: Upper limb orthosis, not otherwise specified
L3999 is the HCPCS code for “Upper limb orthosis, not otherwise specified” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
L3999Upper limb orthosis, not otherwise specified
Short description: Upper limb orthosis nos
HCPCS · United States
Medicare details
The indicators CMS publishes with L3999 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- DMEPOS fee schedule – Carrier priced (e.g., not otherwise classified, individual determination, carrier discretion, gap-filled amounts)
- Type of service
- Lump sum purchase of DME, prosthetics, orthotics
- BETOS category
- Prosthetic/Orthotic devices
- Added
- Jan 1, 1982
Where L3999 sits
- 1L codesOrthotics and prosthetics
- 2Active code L3999Upper limb orthosis, not otherwise specified
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code L3999 mean?
L3999 is the HCPCS code for “Upper limb orthosis, not otherwise specified” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover L3999?
CMS lists L3999’s Medicare coverage as “Carrier judgment” and its pricing as “DMEPOS fee schedule – Carrier priced (e.g., not otherwise classified, individual determination, carrier discretion, gap-filled amounts)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside L3999
All L codesL3978Shoulder elbow wrist hand finger orthosis, abduction positioning (airplane design), thoracic component and support bar, includes one or more nontorsion joints, elastic bands…L3980Upper extremity fracture orthosis, humeral, prefabricated, includes fitting and adjustmentL3981Upper extremity fracture orthosis, humeral, prefabricated, includes shoulder cap design, with or without joints, forearm section, may include soft interface, straps, includes…L3982Upper extremity fracture orthosis, radius/ulnar, prefabricated, includes fitting and adjustmentL3984Upper extremity fracture orthosis, wrist, prefabricated, includes fitting and adjustmentL3995Addition to upper extremity orthosis, sock, fracture or equal, eachL4000Replace girdle for spinal orthosis (ctlso or so)L4002Replacement strap, any orthosis, includes all components, any length, any typeL4010Replace trilateral socket brimL4020Replace quadrilateral socket brim, molded to patient modelL4030Replace quadrilateral socket brim, custom fittedL4040Replace molded thigh lacer, for custom fabricated orthosis only