A0425 HCPCS code: Ground mileage, per statute mile
A0425 is the HCPCS Level II code for ground mileage, per statute mile. In 2024 Medicare paid an average of $7.53 per service for A0425 across 98,923,627 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 250 per day on outpatient hospital claims. Medicare volume fell 4% from 2022 to 2024 (103,325,663 to 98,923,627 services). In 2024, about 10,061 clinicians billed Medicare for A0425 for 3,919,507 beneficiaries; Texas, California, Florida accounted for 20% of services.
Code details
| Field | Value |
|---|---|
| Section | A codes — Transportation, medical/surgical supplies and miscellaneous |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 52 |
| BETOS category | O1A — Ambulance |
| Added | 2001-01-01 |
| Last action effective | 2001-01-01 |
Who bills A0425 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 10,061 |
| Medicare beneficiaries | 3,919,507 |
| States with claims | 55 |
| Share of services in top 3 states (Texas, California, Florida) | 20% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for A0425, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 103,325,663 | 4,136,021 | $8.56 | $6.82 |
| 2023 | 99,506,305 | 3,992,532 | $9.23 | $7.35 |
| 2024 | 98,923,627 | 3,919,507 | $9.46 | $7.53 |
States with the most A0425 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Texas | 8,332,808 | $7.39 |
| California | 6,959,999 | $7.28 |
| Florida | 4,945,950 | $7.19 |
| Georgia | 4,871,537 | $7.18 |
| New York | 4,326,145 | $7.45 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 250 | Clinical: Data |
| practitioner claims | 250 | Clinical: Data |
What changed for A0425
- 2001-01-01: A0425 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 A0425?
A0425 is the HCPCS Level II code for ground mileage, per statute mile. Short descriptor: "Ground mileage".
How much does Medicare pay for A0425?
In 2024, the average Medicare payment was $7.53 per service (average allowed $9.46).
Does Medicare cover A0425?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
How many units of A0425 can be billed per day?
250 on outpatient hospital claims; 250 on practitioner claims (NCCI medically unlikely edits).
Related A04 codes
- A0420 — Ambulance waiting time (als or bls), one half (1/2) hour increments
- A0422 — Ambulance (als or bls) oxygen and oxygen supplies, life sustaining situation
- A0424 — Extra ambulance attendant, ground (als or bls) or air (fixed or rotary winged); (requires medical review)
- A0426 — Ambulance service, advanced life support, non-emergency transport, level 1 (als 1)
- A0427 — Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)
- A0428 — Ambulance service, basic life support, non-emergency transport, (bls)
- A0429 — Ambulance service, basic life support, emergency transport (bls-emergency)
- A0430 — Ambulance service, conventional air services, transport, one way (fixed wing)
- A0431 — Ambulance service, conventional air services, transport, one way (rotary wing)
- A0432 — Paramedic intercept (pi), rural area, transport furnished by a volunteer ambulance company which is prohibited by state law from billing third party payers
- A0433 — Advanced life support, level 2 (als 2)
- A0434 — Specialty care transport (sct)
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 A0425
- Watch A0425 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for A0425
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.