G21.0

Malignant neuroleptic syndrome

Coding guidance (WHO 2019)

Use additional external cause code (Chapter XX), if desired, to identify drug.

Sibling codes

G21Secondary parkinsonism G21.1Other drug-induced secondary parkinsonism G21.2Secondary parkinsonism due to other external agents G21.3Postencephalitic parkinsonism G21.4Vascular parkinsonism G21.8Other secondary parkinsonism G21.9Secondary parkinsonism, unspecified