2C21

ICD-11 MMS 2026-01

Malignant neoplasms of middle ear

Description

Malignant neoplasm originating in the middle ear.

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/1706880799 – malignant neoplasm of skin of (external) ear
  • http://id.who.int/icd/entity/1965082709 – malignant neoplasm of cartilage of ear

Exclusions from above levels

  • 2C51.2 – Mesotheliomas of peritoneum
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
  • 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

  • 2C21.0 – Adenocarcinoma of middle ear
  • 2C21.1 – Squamous cell carcinoma of middle ear
  • 2C21.2 – Unspecified malignant epithelial neoplasm of middle ear
  • 2C21.Y – Other specified malignant neoplasm of middle ear
  • 2C21.Z – Malignant neoplasms of middle ear, unspecified

Sibling codes

  • 2C20 – Malignant neoplasms of nasal cavity
  • 2C22 – Malignant neoplasms of accessory sinuses
  • 2C23 – Malignant neoplasms of larynx
  • 2C24 – Malignant neoplasms of trachea
  • 2C25 – Malignant neoplasms of bronchus or lung
  • 2C26 – Malignant neoplasms of the pleura
  • 2C27 – Malignant neoplasms of thymus
  • 2C28 – Malignant neoplasms of heart or mediastinum
  • 2C29 – Malignant neoplasms of other or ill-defined sites in the respiratory system or intrathoracic organs

Foundation entity

Malignant neoplasms of middle ear – http://id.who.int/icd/entity/621800828

Allowed postcoordination axes

Part of: 02: Neoplasms