G21.0 is the ICD-10 code for Malignant neuroleptic syndrome. It is a four-character subcategory of G21 (Secondary parkinsonism), the most specific level in the WHO edition. It belongs to the block G20–G26 (Extrapyramidal and movement disorders) in Chapter VI, Diseases of the nervous system.
- Code type
- Subcategory (4 characters)
- Chapter
- VI · G00–G99
- Classification
- WHO ICD-10, 2019 version
Coding notes
- Use additional external cause code (Chapter XX), if desired, to identify drug.
G21.0 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
G21.0Malignt nevroleptikasyndrom
DG210Malignt neuroleptikasyndrom
G21.0Malignes Neuroleptika-Syndrom
G21.0Syndrome malin des neuroleptiques
G21.0maligne neuroleptisch-syndroom
G21.0Malignant neuroleptic syndrome
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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