2C20.1

ICD-11 MMS 2026-01

Malignant neuroepitheliomatous neoplasm of nasal cavity

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

  • Malignant neuroepitheliomatous neoplasm of nasal cavity
  • olfactory neuroepithelioma of nasal cavity
  • olfactory neuroepithelioma of unspecified site

Exclusions from above levels

  • 2A02 – Malignant neoplasm of olfactory bulb
  • 2B6B – Malignant neoplasm of posterior margin of nasal septum and choana
  • 2C29 – Malignant neoplasm of nose NOS
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  • http://id.who.int/icd/entity/1706880799 – Malignant neoplasm of skin of nose
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
  • 2C51.2 – Mesotheliomas of peritoneum
  • 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

  • 2C20.0 – Adenocarcinoma of nasal cavity
  • 2C20.2 – Melanoma of nasal cavity
  • 2C20.3 – Olfactory neuroblastoma
  • 2C20.4 – Squamous cell carcinoma of nasal cavity
  • 2C20.Y – Other specified malignant neoplasm of nasal cavity
  • 2C20.Z – Malignant neoplasms of nasal cavity, unspecified

Foundation entity

Malignant neuroepitheliomatous neoplasm of nasal cavity – http://id.who.int/icd/entity/262294384

Allowed postcoordination axes

Part of: 2C20: Malignant neoplasms of nasal cavity › 02: Neoplasms