Category: G21 - Secondary parkinsonism
Chapter Notes
Secondary parkinsonism
Huntington's disease (G10)
neurocognitive disorder with Lewy bodies (G31.83)
Shy-Drager syndrome (G90.3)
syphilitic Parkinsonism (A52.19)
Malignant neuroleptic syndrome
Use additional code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
neuroleptic induced parkinsonism (G21.11)
Other drug-induced secondary parkinsonism
Neuroleptic induced parkinsonism
malignant neuroleptic syndrome (G21.0)
Other drug induced secondary parkinsonism
Other medication-induced parkinsonism
Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Secondary parkinsonism due to other external agents
Code first (T51-T65) to identify external agent
Postencephalitic parkinsonism
Vascular parkinsonism
Other secondary parkinsonism
Secondary parkinsonism, unspecified
