A0427 – Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)

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

Active code Carrier judgment

HCPCS codeA0427
Long description
Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)
Short description
Als1-emergency
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 A0427?

A0427 is a HCPCS Level II code for ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency).

Does Medicare cover A0427?

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.