Summary & Overview
HCPCS Level II A0433: Ambulance ALS2 All-Inclusive Emergency Ground Transport
HCPCS Level II code A0433 designates an all-inclusive advanced life support level 2 (ALS2) ambulance transport for emergency ground services. Nationally, this code captures higher-acuity pre-hospital care where advanced interventions and associated supplies and mileage are bundled into a single service line, making it a key code for emergency medical services billing and coverage determinations. The code is relevant to payers, EMS agencies, and hospital transport planners because it defines when ALS2 resources and bundled reimbursement apply.
This publication covers major commercial payers including Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare. Readers will find a concise explanation of the clinical and service context for A0433, comparisons to related ambulance codes, and the common billing considerations that affect claims processing and payer adjudication. Content highlights include clinical scenarios that typically justify ALS2 transport, the distinction between all-inclusive and mileage-separate billing, and how A0433 fits within ambulance service coding frameworks. Data not available in the input for specific payer rates or service-line revenue benchmarks is noted where applicable. The goal is to provide a clear, policy-focused reference for stakeholders handling emergency ground transport billing using HCPCS Level II code A0433.
Billing Code Overview
HCPCS Level II code A0433 represents ambulance service, advanced life support, level 2 (ALS2), all inclusive (mileage and supplies). This code describes an emergency ground transport service that includes advanced life support interventions beyond basic care, with supplies and mileage bundled into the single all-inclusive unit price. The service type is Ambulance/Transport Services, and the typical site of service is an emergency ground transport (ambulance service).
Clinical & Coding Specifications
Clinical Context
A typical scenario involves an emergency ground transport for a patient with a serious acute condition requiring advanced life support interventions. For example, emergency medical services are dispatched to a scene for a patient with severe chest pain and abnormal cardiac rhythm. On scene, paramedics provide advanced airway management, intravenous access, administration of cardiac medications, and continuous cardiac monitoring. The patient is transported by ambulance to the nearest appropriate emergency department with ALS-level care documented in the patient care report. The clinical workflow includes 911 dispatch, on-scene assessment and ALS interventions, continuous monitoring and medication administration during transport, handoff to the emergency department team, and completion of transport and billing documentation indicating ALS2 services rendered.
Coding Specifications
-
HCPCS Level II code
A0433: Ambulance service, advanced life support, level 2 (ALS2), all inclusive (mileage and supplies). -
Modifiers:
-
QM- Ambulance service provided under arrangement by a provider of services -
QN- Ambulance service furnished directly by a provider of services -
Provider Taxonomies:
-
146L00000X- : Represents ambulance service providers and emergency medical transport organizations