---
title: "HCPCS A0427: Ambulance service, advanced life support… | BillingBrief"
description: "HCPCS code A0427: Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency). Category, related codes, and the official…"
canonical: "https://billingbrief.com/hcpcs/a0427/"
language: "en"
---

# A0427 Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)

HCPCS · [CMS code reference](#source)

**Official HCPCS description:** Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)

## Related codes

-   [`A0425` Ground mileage, per statute mile HCPCS](https://billingbrief.com/hcpcs/a0425/)
-   [`A0428` Ambulance service, basic life support, non-emergency transport, (bls) HCPCS](https://billingbrief.com/hcpcs/a0428/)
-   [`A0429` Ambulance service, basic life support, emergency transport (bls-emergency) HCPCS](https://billingbrief.com/hcpcs/a0429/)
-   [`A0433` Advanced life support, level 2 (als 2) HCPCS](https://billingbrief.com/hcpcs/a0433/)
-   [`A0434` Specialty care transport (sct) HCPCS](https://billingbrief.com/hcpcs/a0434/)
-   [`A4206` Syringe with needle, sterile, 1 cc or less, each HCPCS](https://billingbrief.com/hcpcs/a4206/)

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system).
HCPCS Level II, October 2026 quarterly file.

Code set

HCPCS

Short name

Als1-emergency

Section

Transportation, medical and surgical supplies

Added to HCPCS

2001-01-01

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).