08Diseases of the nervous system
Movement disorders
8A00Parkinsonism
8A00.3
category
Functional parkinsonism
Definition Functional movement disorder with mixed features of functional tremor but also slowness and stiffness which can be demonstrated to be variable and internally inconsistent. No cause has been identified after investigation.
Also indexed as
Functional parkinsonism Psychogenic parkinsonism
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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