C24 - Malignant neoplasm of other and unspecified parts of biliary tract
Excludes 1:
-malignant neoplasm of intrahepatic bile duct C22.1)
C24.0 - Malignant neoplasm of extrahepatic bile duct
C24.1 - Malignant neoplasm of ampulla of Vater
C24.8 - Malignant neoplasm of overlapping sites of biliary tract
C24.9 - Malignant neoplasm of biliary tract, unspecified