2C11

ICD-11 MMS 2026-01

Malignant neoplasms of other or ill-defined digestive organs

Description

A primary malignant tumour involving a digestive organ or organs not coded elsewhere (including intestinal tract [part unspecified], overlapping lesions of the digestive tract and other ill-defined sites within the digestive system)

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

  • 2C50 – Malignant neoplasms of retroperitoneum
  • 2C51 – Malignant neoplasms of peritoneum
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms

Exclusions from above levels

  • http://id.who.int/icd/entity/111033337 – Malignant neoplasm metastasis in digestive system
  • 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
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  • http://id.who.int/icd/entity/944754984 – Neoplasms of haematopoietic or lymphoid tissues

Child codes

  • 2C11.0 – Adenocarcinoma of other or ill-defined digestive organs
  • 2C11.1 – Mucinous carcinoma of other or ill-defined digestive organs
  • 2C11.2 – Other specified malignant neoplasms of other or ill-defined digestive organs
  • 2C11.Z – Malignant neoplasms of other or ill-defined digestive organs, unspecified

Sibling codes

  • 2B70 – Malignant neoplasms of oesophagus
  • 2B71 – Malignant neoplasms of oesophagogastric junction
  • 2B72 – Malignant neoplasms of stomach
  • 2C10 – Malignant neoplasm of pancreas
  • 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
  • 2C18 – Malignant neoplasms of perihilar bile duct
  • 2C1Z – Malignant neoplasms of digestive organs, unspecified

Foundation entity

Malignant neoplasms of other or ill-defined digestive organs – http://id.who.int/icd/entity/1425921467

Allowed postcoordination axes

Part of: 02: Neoplasms