CPT code 78445 is a diagnostic vascular imaging procedure using angiography or venography to visualize blood flow and detect vessel narrowing or other vascular disease. Nationally, this code represents an important diagnostic tool in cardiovascular and interventional radiology, supporting treatment planning for ischemic disease, stenosis, thrombosis, and pre-/post-intervention assessment. Use of this code influences utilization, imaging capacity, and reimbursement patterns across hospital and outpatient imaging settings.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, common settings where the procedure is performed, and typical modifiers used with the service. The publication summarizes national benchmarks for utilization and payment where available, highlights relevant policy updates affecting imaging services, and situates the procedure within broader vascular diagnostic workflows.

The report is aimed at billing managers, radiology administrators, and policy analysts who need clear guidance on coding context, payer coverage considerations, and the operational implications of vascular angiography/venography services. Data not available in the input is noted where applicable.