| ICD-10-CM-2023 > G00-G99 > G20-G26 > G21 |
G20-G26 | Extrapyramidal and movement disorders | |
G21 | Secondary parkinsonism | |
Excl1.: | dementia with Parkinsonism (G31.83) Huntington's disease (G10) Shy-Drager syndrome (G90.3) syphilitic Parkinsonism (A52.19) | |
G21.0 | Malignant neuroleptic syndrome | |
Use add'l | code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595) | |
Excl1.: | neuroleptic induced parkinsonism (G21.11) | |
G21.1 | Other drug-induced secondary parkinsonism | |
G21.11 | Neuroleptic induced parkinsonism | |
Use add'l | code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595) | |
Excl1.: | malignant neuroleptic syndrome (G21.0) | |
G21.19 | Other drug induced secondary parkinsonism | |
Info: | Other medication-induced parkinsonism | |
Use add'l | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | |
G21.2 | Secondary parkinsonism due to other external agents | |
Code first | (T51-T65) to identify external agent | |
G21.3 | Postencephalitic parkinsonism | |
G21.4 | Vascular parkinsonism | |
G21.8 | Other secondary parkinsonism | |
G21.9 | Secondary parkinsonism, unspecified | |
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