L9900 HCPCS code: Orthotic and prosthetic supply, accessory, and/or service component of another hcpcs "l" code
L9900 is the HCPCS Level II code for orthotic and prosthetic supply, accessory, and/or service component of another hcpcs "l" code. In 2024 Medicare paid an average of $184.62 per service for L9900 across 2,071 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume fell 98% from 2022 to 2024 (108,084 to 2,071 services). In 2024, about 6 clinicians billed Medicare for L9900 for 1,414 beneficiaries.
Code details
| Field | Value |
|---|---|
| Section | L codes — Orthotic and prosthetic procedures and devices |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 46 — Priced by the Medicare contractor (no national fee) |
| BETOS category | D1F — Prosthetic and orthotic devices |
| Added | 2000-01-01 |
| Last action effective | 2000-01-01 |
Who bills L9900 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 6 |
| Medicare beneficiaries | 1,414 |
| States with claims | 2 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for L9900, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 108,084 | 3,378 | $46.45 | $36.93 |
| 2023 | 2,443 | 962 | $122.05 | $95.79 |
| 2024 | 2,071 | 1,414 | $235.59 | $184.62 |
States with the most L9900 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Colorado | 1,987 | $67.11 |
| Florida | 81 | $3,070.19 |
Medicare policy articles for this code
- A53708: Billing and Coding: External Components for Cochlear Implants (Palmetto GBA (MAC - Part B))
What changed for L9900
- 2000-01-01: L9900 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 L9900?
L9900 is the HCPCS Level II code for orthotic and prosthetic supply, accessory, and/or service component of another hcpcs "l" code. Short descriptor: "O&p supply/accessory/service".
How much does Medicare pay for L9900?
In 2024, the average Medicare payment was $184.62 per service (average allowed $235.59).
Does Medicare cover L9900?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
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 L9900
- Watch L9900 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for L9900
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; 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.