CPT code 63746 designates the surgical removal of a previously implanted lumbar subarachnoid shunt that drains cerebrospinal fluid (CSF) from the subarachnoid space. This procedure is clinically significant because shunt removal may be required for malfunction, infection, migration, or other complications and can have implications for patient outcomes, perioperative management, and utilization of surgical resources nationwide. Payors and policymakers monitor utilization and coding of explantation procedures to align coverage policies, prior authorization rules, and quality oversight with clinical guidelines.

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 context for 63746, typical sites of service, and the operational considerations relevant to billing and reimbursement. The publication summarizes benchmarks where available, highlights common modifier use and billing considerations (Data not available in the input for payer-specific rates), and outlines how the code fits within surgical service lines for neurosurgery and spine care. The content is intended to inform coding professionals, revenue cycle teams, and health policy stakeholders about the primary uses and administrative context of CPT code 63746 at a national level.