CPT code 36160 denotes a posterior lumbar approach to the aorta where a needle or catheter is introduced through the intercostal space to address arterial dilation or stricture. This invasive vascular intervention is clinically significant for managing aortic and large-artery pathology and has implications for operative planning, facility resource use, and payer coverage determinations nationwide. Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for the procedure, typical sites of service, and the payer landscape relevant to reimbursement and authorization patterns. The publication outlines common billing modifiers associated with complex procedural services and summarizes the practical coding considerations for documenting an aortic access procedure of this type. Where available, benchmarks and policy updates relevant to hospital-based vascular interventions are summarized; when input data are not provided, the report notes that specific benchmarking elements are not available. The material is intended to inform coding professionals, revenue cycle staff, and policy analysts about the clinical nature of CPT code 36160, typical service settings, and the payer mix most commonly engaged for these procedures across the United States.