CPT code 36580 denotes the complete replacement of a non‑tunneled central venous access (CVA) catheter due to blockage, damage, or malfunction. The code captures a targeted, often urgent vascular intervention that affects inpatient and outpatient procedural workflows and resource use nationwide. This code matters nationally because central venous access is common across oncology, critical care, and procedural specialties; accurate coding affects quality reporting, facility planning, and claims adjudication. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical description, typical sites of service, payer coverage context, and guidance on the types of benchmarks and policy updates to look for when evaluating utilization and reimbursement for catheter replacement procedures. The publication outlines clinical context for why replacements occur, common billing modifiers associated with procedural variability, and where to expect differences across commercial and government payers. Data not provided in the input (such as specific payer rates, ICD‑10 mappings, and related codes) are noted as unavailable; the focus remains on the code definition, operational considerations, and what national stakeholders should monitor regarding utilization trends and reimbursement policy changes.