8A06.20

ICD-11 MMS 2026-01

Palatal myoclonus

Description

Palatal myoclonus is usually a rhythmic, continuous movement of the muscles of the middle ear or palate, but can also include muscle of the eye, tongue, neck and diaphragm. The movement may be present in sleep or with distraction with a frequency of 1.5 to 3 Hz. Essential palatal myoclonus is more likely to have an associated rhythmic clicking noise compared to symptomatic palatal myoclonus.

Index terms

  • Palatal myoclonus

Exclusions from above levels

  • 8A02.11 – Dystonia-plus
  • 8B88.1 – Facial myokymia
  • http://id.who.int/icd/entity/1397288146 – myoclonic epilepsy
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  • 6A06 – Stereotyped movement disorder
  • 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

  • 8A06.21 – Chronic hiccups
  • 8A06.2Y – Other specified focal myoclonus
  • 8A06.2Z – Focal myoclonus, unspecified

Foundation entity

Palatal myoclonus – http://id.who.int/icd/entity/1862613145

Part of: 8A06.2: Focal myoclonus › 8A06: Myoclonic disorders › 08: Diseases of the nervous system