Headline: CPT code 47556 defines choledochoscopic dilation with stent placement through an existing transabdominal biliary tube. Lead: CPT code 47556 captures a targeted biliary endoscopic procedure in which a choledochoscope is passed through an existing abdominal tube to visualize the bile ducts, dilate a stenotic segment, and place a stent to preserve ductal flow. This intervention addresses obstructive biliary pathology and is relevant for hospitals and interventional endoscopy programs.

CPT code 47556 matters nationally because it documents a specialized, image-guided biliary procedure used to relieve or prevent biliary obstruction. It is frequently performed in hospital-based procedural suites and has implications for facility resource use, device supply management, and procedural coding accuracy. Key payers considered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn what the code represents clinically and operationally, which payers are commonly engaged, and what to expect in terms of service setting and clinical context. The publication provides benchmarks and policy-relevant context where available, summarizes typical clinical indications, and outlines documentation and coding elements that influence coverage and payment. Data not available in the input is noted where applicable.