2C17

ICD-11 MMS 2026-01

Malignant neoplasms of other or unspecified parts of biliary tract

Coding note from above levels

For use of this category, reference should be made to the mortality coding rules and guidelines in the Reference Guide.

Excludes

  • 2C12 – Malignant neoplasm of intrahepatic bile duct

Exclusions from above levels

  • http://id.who.int/icd/entity/111033337 – Malignant neoplasm metastasis in digestive system
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
  • http://id.who.int/icd/entity/794095161 – Malignant neoplasms of lip, oral cavity or pharynx
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  • http://id.who.int/icd/entity/879154182 – Neoplasms of central nervous system or related structures
  • http://id.who.int/icd/entity/944754984 – Neoplasms of haematopoietic or lymphoid tissues

Child codes

  • 2C17.0 – Adenocarcinoma of other or unspecified parts of biliary tract
  • 2C17.1 – Mucinous cystic neoplasm with associated invasive carcinoma of other or unspecified parts of biliary tract
  • 2C17.2 – Neuroendocrine neoplasms of other or unspecified parts of biliary tract
  • 2C17.Y – Other specified malignant neoplasms of overlapping lesion of biliary tract
  • 2C17.Z – Malignant neoplasms of other or unspecified parts of biliary tract, unspecified

Sibling codes

  • 2B70 – Malignant neoplasms of oesophagus
  • 2B71 – Malignant neoplasms of oesophagogastric junction
  • 2B72 – Malignant neoplasms of stomach
  • 2C10 – Malignant neoplasm of pancreas
  • 2C11 – Malignant neoplasms of other or ill-defined digestive organs
  • 2C12 – Malignant neoplasms of liver or intrahepatic bile ducts
  • 2C13 – Malignant neoplasms of gallbladder
  • 2C14 – Malignant neoplasms of proximal biliary tract, cystic duct
  • 2C15 – Malignant neoplasms of biliary tract, distal bile duct
  • 2C16 – Malignant neoplasms of ampulla of Vater
  • 2C18 – Malignant neoplasms of perihilar bile duct
  • 2C1Z – Malignant neoplasms of digestive organs, unspecified

Foundation entity

Malignant neoplasms of other or unspecified parts of biliary tract – http://id.who.int/icd/entity/1159416016

Allowed postcoordination axes

Part of: 02: Neoplasms