CPT® Code 47542

Add-On Code

Balloon dilation of biliary duct(s) or of ampulla (sphincteroplasty), percutaneous, including imaging guidance (eg, fluoroscopy), and all associated radiological supervision and interpretation, each duct (List separately in addition to code for primary procedure)

The procedure described by CPT® Code 47542 involves the balloon dilation of biliary duct(s) or the ampulla, which is also referred to as sphincteroplasty. This intervention is performed percutaneously, meaning it is done through the skin, and it includes imaging guidance, such as fluoroscopy, to assist in the procedure. The primary goal of this procedure is to alleviate strictures, which are narrowings or blockages in the biliary duct system. These strictures can arise from various causes, including the presence of stones, tumors, infections, inflammation, previous surgical interventions, radiation therapy, trauma, or substance abuse. During the procedure, a small-gauge needle is inserted through the skin and advanced into the liver, allowing access to the biliary system. A guidewire is then threaded through the needle and navigated into the specific area of the biliary duct where the stricture is located. The correct placement of the guidewire is confirmed through fluoroscopic imaging, which provides real-time visualization of the biliary tree. Once the guidewire is in place, a balloon-tipped catheter is introduced over the guidewire and positioned at the site of the stricture. The balloon is then inflated, which serves to widen the lumen of the duct, thereby relieving the obstruction. It is important to note that CPT® Code 47542 encompasses not only the balloon dilation itself but also the imaging guidance and all associated radiological supervision and interpretation for each duct that is dilated during the procedure.