A0427 HCPCS Level II code: Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)
A0427 is the HCPCS code for “Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A0427Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)
Short description: Als1-emergency
HCPCS · United States
Medicare details
The indicators CMS publishes with A0427 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Reasonable charge
- Type of service
- Ambulance
- BETOS category
- Ambulance
- Added
- Jan 1, 2001
Where A0427 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A0427Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A0427 mean?
A0427 is the HCPCS code for “Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A0427?
CMS lists A0427’s Medicare coverage as “Carrier judgment” and its pricing as “Reasonable charge”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A0427
All A codesA0398Als routine disposable suppliesA0420Ambulance waiting time (als or bls), one half (1/2) hour incrementsA0422Ambulance (als or bls) oxygen and oxygen supplies, life sustaining situationA0424Extra ambulance attendant, ground (als or bls) or air (fixed or rotary winged); (requires medical review)A0425Ground mileage, per statute mileA0426Ambulance service, advanced life support, non-emergency transport, level 1 (als 1)A0428Ambulance service, basic life support, non-emergency transport, (bls)A0429Ambulance service, basic life support, emergency transport (bls-emergency)A0430Ambulance service, conventional air services, transport, one way (fixed wing)A0431Ambulance service, conventional air services, transport, one way (rotary wing)A0432Paramedic intercept (pi), rural area, transport furnished by a volunteer ambulance company which is prohibited by state law from billing third party payersA0433Advanced life support, level 2 (als 2)