2C17.2

ICD-11 MMS 2026-01

Neuroendocrine 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.

Index terms

  • Neuroendocrine neoplasms of other or unspecified parts of biliary tract
  • NEC - [neuroendocrine carcinoma] of other and unspecified parts of biliary tract
  • NET - [neuroendocrine tumour] of other and unspecified parts of biliary tract

Exclusions from above levels

  • 2C12 – Malignant neoplasm of intrahepatic bile duct
  • http://id.who.int/icd/entity/111033337 – Malignant neoplasm metastasis in digestive system
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
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  • http://id.who.int/icd/entity/794095161 – Malignant neoplasms of lip, oral cavity or pharynx
  • 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

Sibling 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.Y – Other specified malignant neoplasms of overlapping lesion of biliary tract
  • 2C17.Z – Malignant neoplasms of other or unspecified parts of biliary tract, unspecified

Foundation entity

Neuroendocrine neoplasms of other or unspecified parts of biliary tract – http://id.who.int/icd/entity/1508454837

Allowed postcoordination axes

Part of: 2C17: Malignant neoplasms of other or unspecified parts of biliary tract › 02: Neoplasms