ICD-10-CM > C00-D49 > C15-C26 > C24 > C24.8 C24.8 Malignant neoplasm of overlapping sites of biliary tract Billable/Specific Copy Code Copy Description Applicable To Malignant neoplasm involving both intrahepatic and extrahepatic bile ductsPrimary malignant neoplasm of two or more contiguous sites of biliary tract