CPT code 36100 represents percutaneous arterial access by needle or intracatheter into the carotid or vertebral artery for diagnostic or therapeutic neurovascular procedures. This code captures a key technical access step used in cerebral angiography and endovascular treatment of carotid or vertebral pathology. Nationally, accurate coding of this access procedure matters for clinical documentation, resource use measurement, and alignment of billing with the complexity of endovascular neurointerventions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for CPT code 36100, typical sites of service, and common billing practices. The publication summarizes benchmark considerations, coding guidance essentials, and policy-related updates that affect national billing and claims processing for arterial access in carotid and vertebral procedures.

The report is intended to help coding professionals, revenue cycle managers, and clinical program leads understand where CPT code 36100 fits in procedural workflows, how payers typically view arterial access claims, and what documentation elements usually support appropriate coding. Data not available in the input will be noted where relevant.