ICD-11 classes
10 Diseases of the ear or mastoid process
Diseases of inner ear
AB31 — Episodic vestibular syndrome

ICD-11 AB31 — Episodic vestibular syndrome

A clinical syndrome of transient vertigo, dizziness, or unsteadiness lasting seconds to hours, occasionally days, and generally including features suggestive of temporary, short-lived vestibular system dysfunction (e.g., nausea, nystagmus, sudden falls). There may also be symptoms or signs suggesting cochlear or central nervous system dysfunction. Episodic vestibular syndrome usually connotes multiple, recurrent events caused by an episodic disorder with repeated spells (triggered or spontaneous), but may initially present after the first event.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code AB31 contains 10 clarifying diagnoses:

1. AB31.0 — Meniere disease
2. AB31.1 — Vestibular migraine
3. AB31.2 — Benign positional paroxysmal vertigo
4. AB31.3 — Superior canal dehiscence syndrome
5. AB31.4 — Disembarkment syndrome
6. AB31.5 — Autoimmune inner ear disease
7. AB31.6 — Vestibular paroxysmia
8. AB31.7 — Vertiginous syndromes
9. AB31.Y — Other specified episodic vestibular syndrome
10. AB31.Z — Episodic vestibular syndrome, unspecified

The diagnosis is coded elsewhere:

• Disorders of vestibulocochlear nerve #7203
• Episodic vestibular syndrome #7218