A0021

HCPCS

Outside state ambulance serv

Official HCPCS Level II long descriptor

Ambulance service, outside state per mile, transport (medicaid only)

HCPCS Level II code A0021 is maintained by CMS and is active in the current quarterly release.

Short descriptor

Outside state ambulance serv

Added to HCPCS: 1985-01-01

Nearby codes in A0

A0080Noninterest escort in non er
A0090Interest escort in non er
A0100Nonemergency transport taxi
A0110Nonemergency transport bus
A0120Noner transport mini-bus
A0130Noner transport wheelch van
A0140Nonemergency transport air
A0160Noner transport case worker

Where this code sits

HCPCS Level II A0 codes

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Source

HCPCS Level II July 2026 quarterly update. Centers for Medicare & Medicaid Services (CMS), “July 2026 Alpha-Numeric HCPCS File” (HCPC2026_JUL_ANWEB_06172026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.