2B80.00

ICD-11 MMS 2026-01

Adenocarcinoma of duodenum

Description

An adenocarcinoma that arises from the duodenum.

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

  • Adenocarcinoma of duodenum

Exclusions from above levels

  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
  • 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
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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

Sibling codes

  • 2B80.01 – Neuroendocrine neoplasm of duodenum
  • 2B80.0Y – Other specified malignant neoplasms of the duodenum
  • 2B80.0Z – Malignant neoplasms of duodenum, unspecified

Foundation entity

Adenocarcinoma of duodenum – http://id.who.int/icd/entity/1182663077

Allowed postcoordination axes

Part of: 2B80.0: Malignant neoplasms of duodenum › 2B80: Malignant neoplasms of small intestine › 02: Neoplasms