AA40

ICD-11 MMS 2026-01

Acquired deformity of external auditory canal

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 02 – Neoplasms
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • AA40.0 – Exostosis of external auditory canal
  • AA40.1 – Acquired stenosis of external auditory canal
  • AA40.2 – Cholesteatoma of external auditory canal
  • AA40.Y – Other specified acquired deformity of external auditory canal
  • AA40.Z – Acquired deformity of external auditory canal, unspecified

Sibling codes

  • AA41 – Acquired deformity of pinna
  • AA42 – Impacted cerumen
  • AA4Y – Other specified noninflammatory disorders of the external ear
  • AA4Z – Noninflammatory disorders of the external ear, unspecified

Foundation entity

Acquired deformity of external auditory canal – http://id.who.int/icd/entity/1773110354

Allowed postcoordination axes

Part of: 10: Diseases of the ear or mastoid process