CPT code 36225 denotes imaging supervision and interpretation for selective angiography of the subclavian or innominate arteries with evaluation of ipsilateral vertebral circulation or the cervicocerebral arch. This code documents diagnostic catheter-based angiography performed by advancing a catheter through a distal artery into the thoracic aorta and internal carotid artery before selectively engaging the target arch vessels. Its use is important for diagnosing cerebrovascular and upper extremity arterial disease and for guiding subsequent endovascular or surgical management.

Key national payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and which payers commonly reimburse for catheter-based diagnostic angiography. The publication provides benchmarks related to utilization and billing patterns, summaries of pertinent policy updates affecting documentation and medical necessity, and coding guidance that clarifies the clinical scenarios in which this code applies. The material is intended for billing professionals, radiology and vascular specialists, and revenue integrity teams seeking a national overview of coding and payer considerations for selective subclavian/innominate angiography.