CPT® Code 43274

Endoscopic retrograde cholangiopancreatography (ERCP); with placement of endoscopic stent into biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent

The procedure described by CPT® Code 43274 is known as Endoscopic Retrograde Cholangiopancreatography (ERCP) with the placement of an endoscopic stent into either the biliary or pancreatic duct. This complex procedure involves the use of an endoscope, which is a flexible tube equipped with a camera and light, allowing the physician to visualize the internal structures of the digestive system. The endoscope is carefully passed through the esophagus, stomach, and into the duodenum, specifically targeting the ampulla of Vater, where the pancreatic duct and common bile duct converge. This area is critical for the drainage of bile and pancreatic juices into the small intestine. During the procedure, if necessary, a sphincterotomy is performed, which involves cutting the muscle that controls the opening between the bile duct and pancreatic duct. This step facilitates the passage of a catheter into the ducts. Once access is achieved, contrast dye is injected through the catheter to enhance imaging of the biliary tract, gallbladder, and pancreas, allowing for the identification of any obstructions or abnormalities. Following the imaging, a guidewire is introduced, and a balloon catheter is advanced over this guidewire to the site of any strictures or narrowing within the ducts. The balloon is then inflated to dilate the narrowed area, which is crucial for restoring normal flow. After dilation, the guidewire is removed, and a stent delivery catheter is used to place a stent within the narrowed duct. The stent serves to keep the duct open, ensuring continued drainage. Finally, the stent is seated properly by inflating a balloon catheter within it, and additional contrast is injected to confirm the correct placement of the stent within the biliary or pancreatic duct. This procedure is essential for managing conditions that obstruct the normal flow of bile or pancreatic secretions, thereby alleviating symptoms and preventing complications.