HCPCS Level II A0427: Advanced Life Support Emergency Transport, Level 1
HCPCS Level II code A0427 represents advanced life support, emergency ground ambulance transport at Level 1 (ALS 1). Nationally, ALS 1 transports are critical for patients with unstable, potentially life‑threatening conditions requiring paramedic‑level interventions during transport. Accurate coding of A0427 affects clinical documentation, claims adjudication, and national utilization reporting for emergency medical services.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will find an overview of the code’s clinical context, how ALS 1 services are described in billing, typical sites of service, and how this code relates to advanced prehospital care delivery. The publication outlines common benchmarking topics such as utilization patterns, comparative service definitions (including related higher‑level ALS codes), and payer coverage considerations where available. Policy and coding updates that affect ambulance transport coding practices are summarized to inform billing and compliance discussions.
This national summary is intended to provide concise reference material for revenue cycle leaders, emergency medical services administrators, and policy analysts seeking a clear description of A0427, what it signifies clinically, and which major payers commonly evaluate claims for ALS emergency transports.
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Billing Code Overview
HCPCS Level II code A0427 describes ambulance service, advanced life support, emergency transport, level 1 (ALS 1 - emergency). This service represents advanced pre-hospital care delivered by trained emergency medical personnel during an urgent, life‑threatening transport.
Service type: Advanced life support, emergency transport
Typical site of service: Emergency ground ambulance transport from scene to hospital or between acute care facilities when an emergency ALS 1 response is required
Data not available in the input for additional fields.
National Reimbursement Benchmarks
National commercial reimbursement for HCPCS A0427 centers around the BUCA average commercial benchmark of $453.20, with substantial variation across named payers. Blue Cross Blue Shield shows the highest dispersion and an extreme max outlier ($99,770) that inflates its spread, while UnitedHealth Group and BCBS each have higher mean levels near $521.20 and $542.10 respectively. Cigna and Aetna sit closer to BUCA’s average with means of $374.40 and $286.20, illustrating a mid-to-low tier of payer pricing relative to the overall commercial average.
Examining interquartile ranges (P75–P25) as a measure of dispersion: Blue Cross Blue Shield’s IQR is $272.30 (622.20–349.90), UnitedHealth Group’s IQR is $142.30 (547.50–405.20), BUCA’s IQR is $204.20 (525.90–320.70), Cigna’s IQR is $257.10 (530.40–237.30), and Aetna’s IQR is $45.00 (307.00–261.00). Aetna displays the tightest payer band ($45.00), while Blue Cross Blue Shield and Cigna show the widest spreads, indicating more variability in contracted commercial rates.