A0999

HCPCS

Unlisted ambulance service

Official HCPCS Level II long descriptor

Unlisted ambulance service

HCPCS Level II code A0999 is maintained by CMS and is active in the current quarterly release.

Short descriptor

Unlisted ambulance service

Added to HCPCS: 1987-01-01

Nearby codes in A0

A0431Rotary wing air transport
A0432Pi volunteer ambulance co
A0433Als 2
A0434Specialty care transport
A0435Fixed wing air mileage
A0436Rotary wing air mileage
A0888Noncovered ambulance mileage
A0998Ambulance response/treatment

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.