A0427 - Emergency ambulance service with advanced life support, level 1

Healthcare Common Procedure Coding System

Last updated: 3/24/2026

What is a HCPCS Code?

HCPCS (Healthcare Common Procedure Coding System) codes are used to identify medical procedures, supplies, and services for billing purposes. These codes help standardize how healthcare services are reported and billed across different providers and insurance companies.

Detailed Description

This code represents emergency ambulance transportation with advanced life support (ALS) level 1 care. ALS level 1 includes basic emergency medical services plus at least one advanced life support procedure or medication administered by qualified emergency medical personnel. This is used for emergency situations requiring immediate medical transport with enhanced care beyond basic ambulance services.

Additional Information

This is specifically for emergency transport situations. ALS level 1 includes advanced procedures like IV therapy, cardiac monitoring, or emergency medications administered during transport. Coverage and billing requirements may vary by insurance provider and must meet medical necessity criteria.

Category

Emergency Medical Transportation

Medical Specialty

Emergency Medical Services

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Emergency medical condition requiring advanced life support
  • Medical necessity for ambulance transport

What to Expect After

  • Continue treatment at receiving medical facility
  • Follow emergency department or hospital care plan

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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