L1933 HCPCS code: Ankle foot orthosis, rigid anterior tibial section, total carbon fiber or equal material, prefabricated, off-the-shelf
L1933 is the HCPCS Level II code for ankle foot orthosis, rigid anterior tibial section, total carbon fiber or equal material, prefabricated, off-the-shelf. The 2026 Medicare DMEPOS fee schedule pays $1,070.39 to $1,177.42 depending on the state. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 2 per day on DME suppliers. Its average fee ranks 19 of 20 L19 codes (family range $102.92–$1,226.57).
Code details
| Field | Value |
|---|---|
| Section | L codes — Orthotic and prosthetic procedures and devices |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 38 — DMEPOS: orthotics, prosthetics, prosthetic devices and vision services |
| BETOS category | D1F — Prosthetic and orthotic devices |
| Added | 2025-04-01 |
| Last action effective | 2025-04-01 |
2026 Medicare DMEPOS fee schedule for L1933
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| — | base fee | $1,070.39 | $1,177.42 | $1,306.25 | $979.69 |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | — | $1,070.39 | — |
| AL | — | $1,102.62 | — |
| AR | — | $1,102.55 | — |
| AZ | — | $1,070.39 | — |
| CA | — | $1,070.39 | — |
| CO | — | $1,108.65 | — |
| CT | — | $1,070.39 | — |
| DC | — | $1,070.39 | — |
| DE | — | $1,070.39 | — |
| FL | — | $1,102.62 | — |
| GA | — | $1,102.62 | — |
| HI | — | $1,070.39 | — |
| IA | — | $1,091.32 | — |
| ID | — | $1,070.39 | — |
| IL | — | $1,096.64 | — |
| IN | — | $1,096.64 | — |
| KS | — | $1,091.32 | — |
| KY | — | $1,102.62 | — |
| LA | — | $1,102.55 | — |
| MA | — | $1,070.39 | — |
| MD | — | $1,070.39 | — |
| ME | — | $1,070.39 | — |
| MI | — | $1,096.64 | — |
| MN | — | $1,096.64 | — |
| MO | — | $1,091.32 | — |
| MS | — | $1,102.62 | — |
| MT | — | $1,108.65 | — |
| NC | — | $1,102.62 | — |
| ND | — | $1,108.65 | — |
| NE | — | $1,091.32 | — |
| NH | — | $1,070.39 | — |
| NJ | — | $1,070.39 | — |
| NM | — | $1,102.55 | — |
| NV | — | $1,070.39 | — |
| NY | — | $1,070.39 | — |
| OH | — | $1,096.64 | — |
| OK | — | $1,102.55 | — |
| OR | — | $1,070.39 | — |
| PA | — | $1,070.39 | — |
| PR | — | $1,177.42 | — |
| RI | — | $1,070.39 | — |
| SC | — | $1,102.62 | — |
| SD | — | $1,108.65 | — |
| TN | — | $1,102.62 | — |
| TX | — | $1,102.55 | — |
| UT | — | $1,108.65 | — |
| VA | — | $1,070.39 | — |
| VI | — | $1,177.42 | — |
| VT | — | $1,070.39 | — |
| WA | — | $1,070.39 | — |
| WI | — | $1,096.64 | — |
| WV | — | $1,070.39 | — |
| WY | — | $1,108.65 | — |
How the L1933 fee compares
| Measure | Value |
|---|---|
| Rank among 20 L19 codes (lowest = 1) | 19 |
| Family fee range (average of state fees) | $102.92–$1,226.57 |
| Rural fee uplift | — |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 2 | Anatomic Consideration |
| outpatient hospital claims | 2 | Anatomic Consideration |
Medicare policy articles for this code
- A52457: Ankle-Foot/Knee-Ankle-Foot Orthoses - Policy Article (CGS Administrators, LLC (DME MAC) Noridian Healthcare Solutions, LLC (DME MAC)) — mentions this code in its coding guidance
Covered diagnoses (12 ICD-10-CM codes)
The diagnoses most often listed as covered in the policy articles above:
| ICD-10-CM | Diagnosis | Articles listing it |
|---|---|---|
| A52.16 | Charcot's arthropathy (tabetic) | 1 |
| E08.610 | Diabetes mellitus due to underlying condition with diabetic neuropathic arthropathy | 1 |
| E09.610 | Drug or chemical induced diabetes mellitus with diabetic neuropathic arthropathy | 1 |
| E10.610 | Type 1 diabetes mellitus with diabetic neuropathic arthropathy | 1 |
| E11.610 | Type 2 diabetes mellitus with diabetic neuropathic arthropathy | 1 |
| M14.671 | Charcot's joint, right ankle and foot | 1 |
| M14.672 | Charcot's joint, left ankle and foot | 1 |
| M24.571 | Contracture, right ankle | 1 |
| M24.572 | Contracture, left ankle | 1 |
| M24.574 | Contracture, right foot | 1 |
Showing 10 of 12. The full list, non-covered diagnoses and CSV export are in Caduvo.
What changed for L1933
- April 2025: Code appears in this HCPCS release
- 2025-04-01: L1933 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code L1933?
L1933 is the HCPCS Level II code for ankle foot orthosis, rigid anterior tibial section, total carbon fiber or equal material, prefabricated, off-the-shelf. Short descriptor: "Afo rig ant tib tcf/= ots".
How much does Medicare pay for L1933?
Under the 2026 DMEPOS fee schedule, non-rural state fees are base (base fee): $1,070.39–$1,177.42. Rural fees can be higher.
Does Medicare cover L1933?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Which diagnoses support coverage for L1933?
Medicare policy articles that cite L1933 list 12 covered ICD-10-CM diagnosis codes across 1 article. The most cited include A52.16 (Charcot's arthropathy (tabetic)), E08.610 (Diabetes mellitus due to underlying condition with diabetic neuropathic arthropathy), E09.610 (Drug or chemical induced diabetes mellitus with diabetic neuropathic arthropathy). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.
How many units of L1933 can be billed per day?
2 on DME suppliers; 2 on outpatient hospital claims (NCCI medically unlikely edits).
Related L19 codes
- L1900 — Ankle foot orthosis, spring wire, dorsiflexion assist calf band, custom fabricated ($310.01–$398.09)
- L1902 — Ankle orthosis, ankle gauntlet or similar, with or without joints, prefabricated, off-the-shelf ($85.68–$122.31)
- L1904 — Ankle orthosis, ankle gauntlet or similar, with or without joints, custom fabricated ($540.36–$990.72)
- L1906 — Ankle foot orthosis, multiligamentous ankle support, prefabricated, off-the-shelf ($138.20–$318.48)
- L1907 — Ankle orthosis, supramalleolar with straps, with or without interface/pads, custom fabricated ($674.95–$742.46)
- L1910 — Ankle foot orthosis, posterior, single bar, clasp attachment to shoe counter, prefabricated, includes fitting and adjustment ($307.30–$590.09)
- L1920 — Ankle foot orthosis, single upright with static or adjustable stop (phelps or perlstein type), custom fabricated ($374.16–$761.40)
- L1930 — Ankle foot orthosis, plastic or other material, prefabricated, includes fitting and adjustment ($225.00–$459.82)
- L1932 — Ankle foot orthosis, rigid anterior tibial section, total carbon fiber or equal material, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise ($1,070.39–$1,177.42)
- L1940 — Ankle foot orthosis, plastic or other material, custom fabricated ($568.30–$1,522.87)
- L1945 — Ankle foot orthosis, plastic, rigid anterior tibial section (floor reaction), custom fabricated ($780.45–$1,589.54)
- L1950 — Ankle foot orthosis, spiral, (institute of rehabilitative medicine type), plastic, custom fabricated ($855.92–$1,328.25)
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under L1933
- Watch L1933 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for L1933
Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.