L3933 — Finger orthosis, without joints, may include soft interface, custom fabricated, includes fitting and adjustment
L3933 is a HCPCS Level II code for finger orthosis, without joints, may include soft interface, custom fabricated, includes fitting and adjustment. It belongs to the Orthotic and Prosthetic Procedures and Devices section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Medically Unlikely Edits — units per day
The most units of L3933 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 3 units MAI 3 — Date of Service Edit: Clinical · Clinical: Data
- DME supplier
- 3 units MAI 3 — Date of Service Edit: Clinical · Clinical: Data
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for L3933
- Long descriptor
- Finger orthosis, without joints, may include soft interface, custom fabricated, includes fitting and adjustment
- Short descriptor
- Fo w/o joints cf
- Added
- January 1, 2006
- BETOS
- D1F
- Pricing indicator
- 38 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Orthotics, prosthetics, prosthetic devices and vision services. Price subject to floors and ceilings.
Codes adjacent to L3933
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If L3933 is not quite right, the correct code is very often within a few positions of it.
- L3921Hand finger orthosis, includes one or more nontorsion joints, elastic bands, turnbuckles, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3923Hand finger orthosis, without joints, 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
- L3924Hand finger orthosis, without joints, may include soft interface, straps, prefabricated, off-the-shelf
- L3925Finger orthosis, proximal interphalangeal (pip)/distal interphalangeal (dip), non torsion joint/spring, extension/flexion, may include soft interface material, prefabricated, off-the-shelf
- L3927Finger orthosis, proximal interphalangeal (pip)/distal interphalangeal (dip), without joint/spring, extension/flexion (e.g., static or ring type), may include soft interface material, prefabricated, off-the-shelf
- L3929Hand finger orthosis, includes one or more nontorsion joint(s), turnbuckles, elastic bands/springs, may include soft interface material, straps, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L3930Hand finger orthosis, includes one or more nontorsion joint(s), turnbuckles, elastic bands/springs, may include soft interface material, straps, prefabricated, off-the-shelf
- L3931Wrist hand finger orthosis, includes one or more nontorsion joint(s), turnbuckles, elastic bands/springs, may include soft interface material, straps, prefabricated, includes fitting and adjustment
- L3935Finger orthosis, nontorsion joint, may include soft interface, custom fabricated, includes fitting and adjustment
- L3956Addition of joint to upper extremity orthosis, any material; per joint
- L3960Shoulder elbow wrist hand orthosis, abduction positioning, airplane design, prefabricated, includes fitting and adjustment
- L3961Shoulder elbow wrist hand orthosis, shoulder cap design, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3962Shoulder elbow wrist hand orthosis, abduction positioning, erb's palsey design, prefabricated, includes fitting and adjustment
- L3967Shoulder elbow wrist hand orthosis, abduction positioning (airplane design), thoracic component and support bar, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3971Shoulder elbow wrist hand orthosis, shoulder cap design, includes one or more nontorsion joints, elastic bands, turnbuckles, may include soft interface, straps, custom fabricated, includes fitting and adjustment
- L3973Shoulder elbow wrist hand 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
Questions about L3933
What is HCPCS code L3933?
L3933 is a HCPCS Level II code for finger orthosis, without joints, may include soft interface, custom fabricated, includes fitting and adjustment. It sits in the Orthotic and Prosthetic Procedures and Devices section.
Does Medicare cover L3933?
The CMS HCPCS file marks L3933 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.