CPT® Code 47556

The procedure described by CPT® Code 47556 involves a biliary endoscopy performed percutaneously through a T-tube or another tract. This minimally invasive technique utilizes a flexible fiberoptic endoscope, which is a specialized instrument designed to visualize the bile ducts. The primary objective of this procedure is to inspect the bile ducts for any signs of disease or abnormalities, particularly focusing on areas where strictures, or narrowing of the ducts, may be present. During the procedure, the endoscope is carefully advanced to the site of the stricture, allowing for direct visualization and assessment. A balloon catheter is then introduced through a separate channel in the endoscope, which is specifically designed to treat the stricture. The balloon is positioned within the narrowed segment of the duct and inflated for a brief period, which helps to dilate the stricture. This inflation may be repeated multiple times to achieve optimal dilation. If multiple strictures are identified, the procedure can be performed at each site as necessary. Following the dilation, a collapsed stent is advanced through the endoscope to the stricture site. Once the stent is correctly positioned within the duct, it is deployed, or expanded, to maintain the duct's patency. The physician then examines the bile duct at the stent site to confirm proper placement and may further evaluate the ducts beyond the stricture. After completing the endoscopic examination, the endoscope is withdrawn, and the bile ducts are inspected once more for any potential injury or disease, ensuring comprehensive assessment and treatment of the biliary system.