CPT code 47538 represents percutaneous placement of a biliary stent via an existing percutaneous access, a procedure used to restore and maintain bile duct patency. It is a commonly billed interventional radiology service for patients with obstructive biliary pathology, often performed with imaging guidance and may include cholangiography, balloon dilation, and catheter management. Nationally, this code matters for hospital outpatient and interventional radiology billing, utilization monitoring, and payer coverage policies because it involves combined procedural and imaging components and can affect downstream care costs and patient outcomes.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for stent placement, typical sites of service, and the procedural elements captured by the code. The publication summarizes how the service is reported, common modifiers associated with this service in practice, and what to expect in payer coverage and claims adjudication at a high level. Where specific data elements are not provided in the input, the text notes that those items are not available.

This report is written for a national audience of healthcare policy analysts, revenue cycle staff, and clinical leaders seeking concise guidance on the clinical and billing scope of CPT code 47538, as well as the payer landscape relevant to claims and policy considerations.