CPT code 35511 denotes an open vascular bypass where a vein graft connects one subclavian artery to the opposite subclavian artery to bypass an occlusion. This procedure is clinically significant for restoring arterial inflow to the upper extremities and posterior cerebral circulation in patients with subclavian artery occlusive disease or steal phenomena. Nationally, charges and utilization for complex vascular reconstructions like this influence hospital surgical service planning, vascular surgery resource allocation, and payer coverage policies for advanced revascularization techniques.

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 intent and typical care setting for the procedure, common modifiers and billing considerations supplied in the input, and a summary of where to locate related coding and policy guidance. The brief also highlights expected documentation elements, the typical inpatient hospital operating room setting, and expected clinical contexts for use. Data not provided in the input—such as specific ICD-10 diagnosis pairings, payer-specific reimbursement rates, and taxonomy mappings—are noted as unavailable. This publication serves as a practical reference for coding teams, billing professionals, and policy staff seeking a national-level understanding of CPT code 35511 and its place in vascular surgical service lines.