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HCPCS Level II · Transportation, medical and surgical supplies

A0999Unlisted ambulance service

✓ Active

Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.

About A0999

A0999 is an HCPCS Level II code in the A series (transportation, medical and surgical supplies), describing unlisted ambulance service.

It was added to HCPCS effective 01/01/1987, and its current record took effect 01/01/1998.

Its Medicare coverage code is "D", meaning special Medicare coverage instructions apply.

Details

Short description
Unlisted ambulance service
Date added
01/01/1987
Action effective
01/01/1998
BETOS
O1A

Related A09xx codes

Common questions about A0999

Is HCPCS A0999 still valid?

Yes. A0999 is active in the CMS October 2026 HCPCS file.

Does Medicare cover A0999?

Its coverage code is "D": special Medicare coverage instructions apply. Check the local coverage determination for your region.