MB46

ICD-11 MMS 2026-01

Abnormal involuntary movements

Description

Abnormal involuntary movements include abnormal head movements, tremor, cramp, spasm, fasciculation, and other abnormal involuntary movements

Excludes

  • 6A06 – Stereotyped movement disorder
  • 8A04.1 – Essential tremor or related tremors
  • 8A05 – Tic disorders
  • http://id.who.int/icd/entity/384289569 – Movement disorders
  • MB45.4 – Intention tremor

Exclusions from above levels

  • 19 – Certain conditions originating in the perinatal period
  • JA66 – Clinical findings on antenatal screening of mother

Child codes

  • MB46.0 – Asterixis
  • MB46.1 – Abnormal head movements
  • MB46.2 – Athetosis
  • MB46.3 – Drop attack
  • MB46.4 – Titubation
  • MB46.5 – Shuddering
  • MB46.Y – Other specified abnormal involuntary movements
  • MB46.Z – Abnormal involuntary movements, unspecified

Foundation children elsewhere

  • 8A04.33 – Tremor due to certain specified central nervous system diseases

Sibling codes

  • MB40 – Sensation disturbance
  • MB41 – Disturbances of smell or taste
  • MB42 – Phonophobia
  • MB43 – Dyssomnia
  • MB44 – Abnormalities of gait or mobility
  • MB45 – Lack of coordination
  • MB47 – Abnormality of tonus or reflex
  • MB48 – Dizziness or giddiness
  • MB49 – Aura
  • MB4A – Apraxia
  • MB4B – Symbolic dysfunctions
  • MB4C – Gerstmann syndrome
  • MB4D – Headache, not elsewhere classified
  • MB60 – Sleeptalking
  • MB6Y – Other specified symptoms or signs involving the nervous system

Foundation entity

Abnormal involuntary movements – http://id.who.int/icd/entity/682424259

Part of: 21: Symptoms, signs or clinical findings, not elsewhere classified