Summary & Overview
CPT 47538: Percutaneous Biliary Stent Placement
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.
Billing Code Overview
CPT code 47538 describes percutaneous placement of a biliary stent through an existing percutaneous access. The procedure typically includes stent placement to keep the bile duct open and may incorporate cholangiography, fluoroscopic and/or ultrasound guidance, balloon dilation of the ducts, and removal or exchange of catheters, with associated radiological supervision and interpretation.
Service Type: Interventional radiology/percutaneous biliary intervention
Typical Site of Service: Interventional radiology suite or hospital outpatient setting
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with obstructive jaundice from malignant distal biliary stricture presents with progressive cholestatic liver function test abnormalities, pruritus, and intermittent fevers. The patient previously underwent percutaneous transhepatic biliary drainage (PTBD) with an indwelling external biliary catheter placed for decompression. Over time the catheter requires exchange and definitive internalization. The interventional radiology team schedules a percutaneous transhepatic biliary stent placement through the existing percutaneous access to convert external drainage to internal drainage and maintain long-term bile duct patency. Pre-procedure workflow includes review of prior imaging (CT/MRCP), coagulation assessment, informed consent, and antibiotic prophylaxis per institutional protocol. Procedural workflow: patient placed supine in IR suite, conscious sedation or general anesthesia as indicated, cholangiography performed through the existing percutaneous tract under fluoroscopic guidance to delineate stricture length and anatomy, dilation of the stricture with balloon catheter if needed, placement and deployment of a self-expanding or balloon-expandable biliary stent across the obstruction, confirmation cholangiogram to document bile flow, possible removal or exchange of the external catheter, and radiological supervision and interpretation documented. Post-procedure care includes monitoring for bleeding, bile leak, infection, and imaging or labs to confirm decompression; discharge instructions include stent surveillance and signs of complications.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 |