AB35

ICD-11 MMS 2026-01

Labyrinthine fistula

Description

Labyrinthine fistula is a condition in which an abnormal communication is present between the perilymphatic space of the inner ear and the middle ear (usually at or adjacent to the round or oval window). The manifestations of this disease vary in severity and complexity, commonly ranging from very mild to incapacitating.

Index terms

  • Labyrinthine fistula
  • Perilymphatic fistula
  • inner ear fistula
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  • labyrinth fistula
  • Semicircular canal fistula

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

  • AB30 – Acute vestibular syndrome
  • AB31 – Episodic vestibular syndrome
  • AB32 – Chronic vestibular syndrome
  • AB33 – Otosclerosis
  • AB34 – Disorders of vestibular function
  • AB36 – Labyrinthine dysfunction
  • AB37 – Noise effects on inner ear
  • AB3Y – Other specified diseases of inner ear
  • AB3Z – Diseases of inner ear, unspecified

Foundation entity

Labyrinthine fistula – http://id.who.int/icd/entity/1358389085

Allowed postcoordination axes

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