2C18

ICD-11 MMS 2026-01

Malignant neoplasms of perihilar bile duct

Description

“Includes left, right and common hepatic ducts to the origin of the cystic duct”

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.

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

2C18.0 – Hilar cholangiocarcinoma
2C18.1 – Mucinous cystic neoplasm with associated invasive carcinoma of perihilar bile duct
2C18.2 – Neuroendocrine neoplasm of perihilar bile duct
2C18.Y – Other specified malignant neoplasms of perihilar bile duct
2C18.Z – Malignant neoplasms of perihilar bile duct, 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
2C17 – Malignant neoplasms of other or unspecified parts of biliary tract
2C1Z – Malignant neoplasms of digestive organs, unspecified

Foundation entity

Malignant neoplasms of perihilar bile duct – http://id.who.int/icd/entity/1071237724

Allowed postcoordination axes

Part of: 02: Neoplasms