8A01.2

ICD-11 MMS 2026-01

Hemichorea or hemiballismus

Description

Ballism (“ballismós” meaning ‘jumping around’ in Ancient Greek) refers to violent, irregular flinging movements of the limbs primarily due to contractions of the proximal muscles. Hemiballism refers to movements involving upper and lower extremities on the same side with or without involvement of the face. Hemichorea refers to hemibody chorea with brief non repetitive jerks affecting arm and leg on one side with or without involvement of the face.

Index terms

  • Hemichorea or hemiballismus

Exclusions from above levels

  • 6A06 – Stereotyped movement disorder
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

Sibling codes

  • 8A01.0 – Benign hereditary chorea
  • 8A01.1 – Secondary Chorea
  • 8A01.Y – Other specified choreiform disorders
  • 8A01.Z – Choreiform disorders, unspecified

Foundation entity

Hemichorea or hemiballismus – http://id.who.int/icd/entity/1164080406

Part of: 8A01: Choreiform disorders › 08: Diseases of the nervous system