CPT code 70545 designates contrast-enhanced magnetic resonance angiography (MRA) of the head and surrounding vascular structures. This advanced diagnostic imaging study plays a central role in evaluating cerebrovascular disease, aneurysms, arterial stenosis, and other vascular abnormalities, making it widely used across hospital outpatient radiology departments and imaging centers nationwide. The code captures a high-cost, high-utility service that influences care pathways for stroke, transient ischemic attack workups, and pre-surgical vascular planning.

Key payers in this national overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise synthesis of what CPT code 70545 represents clinically and operationally, followed by benchmarks and payer coverage patterns where available. The publication summarizes typical sites of service, common clinical indications, and how this imaging modality fits into diagnostic algorithms. It also highlights payment and utilization considerations relevant to hospitals and outpatient imaging providers.

This summary is intended to inform revenue cycle professionals, radiology administrators, and health policy stakeholders about the clinical function and payer relevance of CPT code 70545, and to serve as a reference for further review of coverage policies and reimbursement benchmarks.