A0431 – Ambulance service, conventional air services, transport, one way (rotary wing)

HCPCS Level II code · A codes: Transportation, Medical & Surgical Supplies, Miscellaneous & Experimental

Active code Carrier judgment

HCPCS codeA0431
Long description
Ambulance service, conventional air services, transport, one way (rotary wing)
Short description
Rotary wing air transport
Pricing indicator
52 Reasonable charge
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
O1A Ambulance
Added
January 1, 2001
Last change
January 1, 2001 – No change

Frequently asked questions

What is HCPCS code A0431?

A0431 is a HCPCS Level II code for ambulance service, conventional air services, transport, one way (rotary wing).

Does Medicare cover A0431?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby A codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.