CPT code 70546 denotes magnetic resonance angiography (MRA) of the head and surrounding vessels performed both without and with intravenous contrast. This diagnostic imaging code is nationally relevant due to the central role of MRA in evaluating cerebrovascular disease, suspected aneurysm or stenosis, and pre- or post-procedural vascular assessment. Use and reimbursement of this code affect hospital outpatient imaging volumes, radiology practice workflows, and imaging utilization policy.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, common settings where the service is delivered, and what benchmarks and policy items are typically assessed for this service nationally: utilization benchmarks, payment policy variations across major commercial payers and Medicare, prior authorization trends, and documentation expectations tied to clinical indications.

This publication provides practical reference material for coding and billing teams, radiology managers, and policy analysts seeking clear definitions, payer coverage scope, and the principal operational considerations associated with CPT code 70546. Data not available in the input.