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
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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.