Fistula of gallbladder

This code describes an abnormal, pathological connection or tract originating from the gallbladder to another organ or to the skin. This can be an internal fistula (e.g., to the duodenum, colon) or an external fistula (e.g., to the skin). It typically results from inflammation, infection, or trauma involving the gallbladder.

Use this code when documentation clearly indicates the presence of a fistula originating from the gallbladder. This diagnosis is often supported by imaging studies such as cholangiography, CT scans, or MRI, and clinical findings like bile drainage or symptoms of enterobiliary communication.

• Specify the type of fistula (e.g., cholecystoduodenal, cholecystocutaneous) if documented, as this may impact treatment and further coding.
• Code any underlying cause of the fistula, such as cholelithiasis or cholecystitis, as an additional diagnosis.
• Distinguish from biliary fistulas not originating directly from the gallbladder, which would be coded elsewhere.