When and How to Bill A0425 for Ground Ambulance Mileage

When to Use Code A0425

HCPCS A0425 covers ground mileage for ambulance transport, whether emergency or non-emergency.
It is always billed in conjunction with another transport code (e.g., A0428, A0426).

• •Service type: Ground mileage
• •When to bill: Whenever an ambulance transports a patient over a measurable distance
• •Who uses it: Licensed ambulance transport providers

Common scenarios:

• •BLS or ALS ambulance trips between facilities
• •Scheduled non-emergency transports to dialysis or rehab
• •Hospital discharges requiring stretcher service

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Insurance Verification Tips for A0425

1. •Document exact mileage traveled (start and stop odometer readings).
2. •Verify the payer’s per-mile reimbursement rate.
3. •Include point-to-point origin and destination addresses.
4. •Pair A0425 with the correct transport base code (e.g., A0428, A0426).

Pro tip: Round mileage down to the nearest whole mile unless the payer specifies otherwise.

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Example Case

A patient is transported 12.5 miles by BLS ambulance from a nursing home to a dialysis center.
The claim includes:

• •A0428 (BLS non-emergency base rate)
• •A0425 x 12 miles for total distance traveled.