AA41.0

ICD-11 MMS 2026-01

Cauliflower ear

Description

Cauliflower ear is the end result of fibrosis of the skin and soft tissues of the pinna following a traumatic subperichondrial haematoma, usually due to trauma. It manifests as permanent swelling and deformity of the ear, described as resembling a cauliflower. It is found most commonly amongst men involved in contact sports such as boxing, wrestling, martial arts and rugby football.

Index terms

  • Cauliflower ear
  • Chronic haematoma of pinna
  • Deformity of pinna following traumatic perichondrial haematoma
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  • boxer ear
  • prizefighter ear
  • wrestler ear

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

Sibling codes

  • AA41.Y – Other specified acquired deformity of pinna
  • AA41.Z – Acquired deformity of pinna, unspecified

Foundation entity

Cauliflower ear – http://id.who.int/icd/entity/1221475936

Allowed postcoordination axes

Part of: AA41: Acquired deformity of pinna › 10: Diseases of the ear or mastoid process