CPT code 33518 identifies a coronary artery bypass grafting (CABG) operation involving two vein grafts harvested from another body site, performed in conjunction with arterial grafting. This procedure restores coronary blood flow, improves cardiac function, and relieves ischemic symptoms such as angina. Nationally, CABG procedures remain a critical component of advanced cardiac surgical care and are closely monitored for quality, outcomes, and appropriate utilization.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clinical and billing-focused overview of the procedure, typical sites of service, commonly reported modifiers, and context for coding and claims submission. The publication summarizes payer coverage patterns and standard billing practices where available and highlights the clinical circumstances that typically prompt use of this CPT code.

The report provides benchmarks and policy-relevant context so clinicians, coders, and administrators can understand how CPT code 33518 is used in practice, what to expect on the service line, and where to look for payer-specific guidance. Data not available in the input is clearly noted where applicable.