CPT® Code 47630

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The procedure described by CPT® Code 47630 involves the extraction of biliary duct stones through a percutaneous approach utilizing a T-tube tract. This technique is typically indicated for patients who have retained biliary stones following a prior surgical procedure where the common bile duct was explored, and a T-tube was placed to facilitate drainage. The extraction process employs a basket or snare device to capture and remove the stones effectively. The use of radiological guidance is essential in this procedure, as it allows for precise navigation to the site of the stones within the biliary duct. The basket extraction catheter is carefully maneuvered through the T-tube tract, ensuring that it reaches just proximal to the stone. Once in position, the basket is opened to ensnare the stone, and traction is applied to withdraw the basket along with the stone. Alternatively, a snare device may be utilized, following a similar technique for stone retrieval. This procedure is crucial for alleviating obstructions caused by biliary stones and restoring normal biliary function.