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G21.0 Malignant neuroleptic syndrome
BackG21Secondary parkinsonismCategory7 →G21.0Malignant neuroleptic syndromeCategoryG21.1Other drug-induced secondary parkinsonismCategory2 →G21.11Neuroleptic induced parkinsonismCategoryG21.19Other drug induced secondary parkinsonismCategoryG21.2Secondary parkinsonism due to other external agentsCategoryG21.3Postencephalitic parkinsonismCategoryG21.4Vascular parkinsonismCategoryG21.8Other secondary parkinsonismCategoryG21.9Secondary parkinsonism, unspecifiedCategory
CategoryCODABLE
G21.0
Malignant neuroleptic syndrome
EXCLUDES
Excludes1: neuroleptic induced parkinsonism (G21.11)
CODING RULE
Use additional code: code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
- Chapter
- VI · Diseases of the nervous system
- Section
- G20-G26
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.