The surgeon performs Roux-en-Y anastomosis of the extrahepatic biliary duct to the gastrointestinal tract on a 45-year-old patient. What CPT® code is reported?

The procedure described is an anastomosis (surgical connection) of an extrahepatic biliary duct to the gastrointestinal tract using a Roux-en-Y limb. CPT® code 47780, Anastomosis, Roux-en-Y, of extrahepatic biliary duct and gastrointestinal tract, precisely matches this description. The key elements from the operative report—"Roux-en-Y," "anastomosis," and "extrahepatic biliary duct"—are all explicitly included in the descriptor for code 47780, making it the correct choice.

A. 47785: This code is for an anastomosis involving the intrahepatic (inside the liver) biliary ducts, not the extrahepatic ducts specified in the question.
C. 47740: This code describes an anastomosis of the gallbladder to the intestinal tract (cholecystoenterostomy), not the biliary duct.
D. 47760: This code is for a direct anastomosis of the extrahepatic biliary ducts, which is a different surgical technique than the specified Roux-en-Y anastomosis.

1. American Medical Association (AMA). CPT® 2024 Professional Edition. Chicago

IL: AMA Press

2023.

Section: Surgery/Digestive System

Biliary Tract.

Page/Code Reference: Code descriptors for 47760

47780

47785

and 47740 confirm the specific anatomical sites (intrahepatic vs. extrahepatic ducts

gallbladder) and surgical techniques (direct vs. Roux-en-Y) that differentiate these codes.