08Diseases of the nervous system
Movement disorders
8A01Choreiform disorders
8A01.2Hemichorea or hemiballismus
8A01.21
category
Ballism
Definition 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.
Nearby in Hemichorea or hemiballismus
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
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This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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