A0425
Ground Ambulance Mileage, Per Mile
Code Description
HCPCS code A0425 is used to report ground ambulance mileage and is billed per mile in addition to the appropriate ambulance transportation base code, such as A0428, A0427, or A0429. The mileage charge reimburses the distance traveled while transporting the patient and is not reported as a standalone ambulance service.
When to Use A0425
Common examples include:
Non-emergency BLS ambulance transport
Emergency BLS ambulance transport
Advanced Life Support (ALS) transport
Interfacility transfers
Dialysis transportation
Skilled nursing facility transfers
Hospital-to-hospital ambulance transport
Documentation Requirements
Documentation should include:
Number of loaded miles traveled
Associated ambulance base code
Origin and destination
Medical necessity for transport
Ambulance trip documentation
Date of service
Examples
Example 1
A patient is transported 18 loaded miles by non-emergency ground ambulance from a hospital to a rehabilitation facility. The ambulance provider reports A0428 for the transport and 18 units of HCPCS code A0425 for the mileage.
Example 2
A patient is transported by emergency Basic Life Support ambulance for 12 loaded miles to the nearest hospital. The provider bills the appropriate emergency transport code along with 12 units of HCPCS code A0425 to report the mileage.
Common Billing Mistakes
Common billing mistakes include:
Billing A0425 without an accompanying ambulance transport code
Reporting incorrect mileage units
Including unloaded miles
Missing documentation of loaded mileage
Omitting origin and destination modifiers
Related HCPCS Codes
A0428
Basic Life Support (BLS), Non-Emergency Transport
A0427
Advanced Life Support (ALS), Emergency Transport
A0429
Basic Life Support (BLS), Emergency Transport
FAQ
What does HCPCS code A0425 cover?
HCPCS code A0425 reports the loaded mileage associated with ground ambulance transportation and is billed on a per-mile basis.
Can A0425 be billed by itself?
No. A0425 should be reported with the appropriate ambulance transportation base code, such as A0428, A0427, or A0429.
How is A0425 billed?
The code is billed in units based on the number of loaded miles traveled while transporting the patient.
When is A0425 commonly reported?
It is commonly reported with ground ambulance transports involving emergency and non-emergency services whenever mileage is separately reimbursable.
Code Type
Mileage
Billing Type
Billing Unit
Ground Ambulance
Per Mile
