G21 - Secondary parkinsonism
Excludes 1:
-dementia with Parkinsonism G31.83)
-Huntington's disease (G10)
-Shy-Drager syndrome G90.3)
-syphilitic Parkinsonism A52.19)
G21.0 - Malignant neuroleptic syndrome
G21.1 - Other drug-induced secondary parkinsonism
G21.11 - Neuroleptic induced parkinsonism
G21.19 - Other drug induced secondary parkinsonism
G21.2 - Secondary parkinsonism due to other external agents
G21.3 - Postencephalitic parkinsonism
G21.4 - Vascular parkinsonism
G21.8 - Other secondary parkinsonism
G21.9 - Secondary parkinsonism, unspecified