Summary & Overview
HCPCS Level II A0425: Ground mileage for ambulance transport
Headline: HCPCS Level II code A0425: Ground mileage, per statute mile
Lead: HCPCS Level II code A0425 identifies the mileage component of ground ambulance transports and is a key code for documenting distance-based transport charges. It matters nationally as mileage reporting directly affects ambulance claim adjudication, bundled transport billing, and the accurate capture of transport-related costs.
What the code represents and why it matters: This code represents per-mile billing for ground ambulance transports and is an essential element of ambulance service claims. Accurate use of the code influences payment determinations, provider-provider arrangements, and compliance with payor policies.
Key payers covered: Coverage considerations for A0425 are addressed across major commercial payers, including Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare.
What readers will learn: The publication provides clear definitions and clinical context for use of HCPCS Level II code A0425, describes how it pairs with base ambulance service lines, and outlines common billing elements and administrative considerations. The reader will find concise guidance on the role of mileage in claims, the typical clinical scenarios that generate transport mileage, and references to related ambulance service categories. Data not available in the input is explicitly noted where applicable.
Billing Code Overview
HCPCS Level II code A0425 denotes ground mileage, per statute mile associated with ambulance and transport services. This code is used to report the mileage component of a ground ambulance transport and is billed in conjunction with the base ambulance transport service line. The service type is Ambulance/Transport Services and the typical site of service is ground ambulance transport.
Clinical & Coding Specifications
Clinical Context
A patient calls emergency services for acute chest pain while at home. Emergency Medical Services (EMS) respond, evaluate the patient on scene, and determine ground ambulance transport to the nearest emergency department is required. During transport, EMS documents total statute miles traveled from pickup location to destination, provides basic or advanced life support as clinically indicated, and records the arranging relationship (service furnished directly or under arrangement). The ground mileage line item accompanies the base transport service code on the claim and is billed using HCPCS Level II code A0425 for the number of statute miles.
Coding Specifications
-
Modifiers:
-
QM— Ambulance service provided under arrangement. UseQMon the mileage line when the transporting ambulance service is furnished under arrangement by another provider. -
QN— Ambulance service furnished directly by the billing provider. UseQNon the mileage line when the billing ambulance provider furnished the transport directly. -
Provider taxonomies:
-
341600000X— Ambulance: represents ambulance service organizations providing patient transport.