2C20.3

ICD-11 MMS 2026-01

Olfactory neuroblastoma

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

  • Olfactory neuroblastoma
  • Esthesioneuroblastoma of brain
  • asthesioneuroblastoma
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  • esthesioneuroblastoma of nasal cavity

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
  • 2C20.1 – Malignant neuroepitheliomatous neoplasm of nasal cavity
  • 2C20.2 – Melanoma of nasal cavity
  • 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

Olfactory neuroblastoma – http://id.who.int/icd/entity/2007774165

Allowed postcoordination axes

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