CPT code 36818 represents surgical creation of an arteriovenous anastomosis connecting the cephalic vein to the brachial artery in the upper arm to provide vascular access for hemodialysis. Nationally, this procedure is a key component of care for patients with kidney failure who require long-term hemodialysis because an autogenous arteriovenous fistula generally offers better long-term patency and fewer complications than prosthetic alternatives. Payers frequently evaluate coverage and payment policy for access creation in the context of quality metrics, site-of-service optimization, and durable access outcomes.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and the role of CPT code 36818 in vascular access pathways. The publication summarizes commonly used modifiers and payer considerations, highlights where data are not available in the input, and identifies related service lines and clinical implications for dialysis access planning. The content is intended to inform billing, coding, and administrative staff, health system planners, and policy analysts about the coding and clinical purpose of CPT code 36818 at a national level.