2B80

ICD-11 MMS 2026-01

Malignant neoplasms of small intestine

Description

A primary malignant neoplasm involving the small intestine.

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

  • 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

  • 2B80.0 – Malignant neoplasms of duodenum
  • 2B80.1 – Malignant neoplasms of jejunum or ileum
  • 2B80.2 – Malignant neoplasms of small intestine, site unspecified
  • 2B80.Y – Other specified malignant neoplasms of small intestine
  • 2B80.Z – Malignant neoplasms of small intestine, unspecified

Foundation children elsewhere

  • 2A90.7 – Enteropathy associated T-cell lymphoma
  • 2B5B.1 – Gastrointestinal stromal tumour of small intestine

Sibling codes

  • 2B81 – Malignant neoplasms of appendix
  • 2C00 – Malignant neoplasms of anus or anal canal
  • 2C0Y – Other specified malignant neoplasms of intestine
  • 2C0Z – Malignant neoplasms of intestine, unspecified

Foundation entity

Malignant neoplasms of small intestine – http://id.who.int/icd/entity/906379260

Allowed postcoordination axes

Part of: 02: Neoplasms