AB55

ICD-11 MMS 2026-01

Sudden idiopathic hearing loss

Index terms

  • Sudden idiopathic hearing loss
  • Sudden hearing loss NOS
  • sudden deafness

Exclusions from above levels

  • AB33 – Otosclerosis
  • 01 – Certain infectious or parasitic diseases
  • 02 – Neoplasms
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  • 05 – Endocrine, nutritional or metabolic diseases
  • 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

  • AB50 – Congenital hearing impairment
  • AB51 – Acquired hearing impairment
  • AB52 – Deafness not otherwise specified
  • AB53 – Ototoxic hearing loss
  • AB54 – Presbycusis
  • AB56 – Hereditary hearing loss
  • AB57 – Auditory synaptopathy or neuropathy
  • AB5Y – Other specified disorders with hearing impairment
  • AB5Z – Disorders with hearing impairment, unspecified

Foundation entity

Sudden idiopathic hearing loss – http://id.who.int/icd/entity/692012078

Allowed postcoordination axes

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