2B91

ICD-11 MMS 2026-01

Malignant neoplasms of rectosigmoid junction

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/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

Child codes

  • 2B91.0 – Adenocarcinoma of rectosigmoid junction
  • 2B91.Y – Other specified malignant neoplasms of rectosigmoid junction
  • 2B91.Z – Malignant neoplasms of rectosigmoid junction, unspecified

Sibling codes

  • 2B90 – Malignant neoplasms of colon
  • 2B92 – Malignant neoplasms of rectum
  • 2B93 – Malignant neoplasms of large intestine, site unspecified
  • 2B9Y – Other specified malignant neoplasms of large intestine

Foundation entity

Malignant neoplasms of rectosigmoid junction – http://id.who.int/icd/entity/774170412

Allowed postcoordination axes

Part of: 02: Neoplasms