CPT® Code 47550

The CPT® Code 47550 refers to a specific procedure known as biliary endoscopy, which is performed intraoperatively and is also referred to as choledochoscopy. This procedure is conducted during a separate operative intervention, meaning it is not the primary procedure but rather an additional step taken to assess the biliary system. The process involves the use of a flexible biliary endoscope, which is a specialized instrument designed for visualizing the bile ducts. This endoscope is equipped with an irrigation system that allows for the flushing of the ducts during the examination. The insertion of the endoscope occurs through an incision made in the common bile duct, enabling the physician to inspect the entire length of the duct down to the papilla, which is the opening where the bile duct meets the small intestine. During this inspection, any abnormalities, such as strictures, stones, or lesions, are carefully noted for further evaluation or treatment. After the initial inspection, the endoscope is withdrawn and then reinserted proximally to examine the hepatic ducts, which are the ducts that carry bile from the liver. This thorough examination is crucial for diagnosing and managing conditions affecting the biliary system.