CPT code 47537 represents the radiology-guided removal of a biliary drainage catheter, often performed with ultrasound and fluoroscopy and potentially including cholangiography. This interventional radiology service matters nationally because it addresses postoperative and chronic biliary drainage management, impacts resource use in outpatient imaging suites and hospitals, and intersects with quality and utilization oversight for procedural imaging. Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise clinical and billing overview of the procedure, typical sites of service, common modifiers and coding considerations, and the types of benchmarks and policy issues that influence coverage and reimbursement. The publication outlines how the procedure is documented, the role of imaging supervision and interpretation, and the implications for outpatient interventional radiology workflows. Data not available in the input is noted where applicable, and the report focuses on national payer practices and clinical context rather than state-specific rules.