G21 |
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Secondary parkinsonism  |
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Excludes1 |
Huntington's disease (G10) neurocognitive disorder with Lewy bodies (G31.83) Shy-Drager syndrome (G90.3) syphilitic Parkinsonism (A52.19)
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G21.0 |
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Malignant neuroleptic syndrome |
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G21.1 |
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Other drug-induced secondary parkinsonism |
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G21.11 |
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Neuroleptic induced parkinsonism |
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G21.19 |
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Other drug induced secondary parkinsonism |
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Other medication-induced parkinsonism |
UseAdditionalCode |
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
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G21.2 |
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Secondary parkinsonism due to other external agents |
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CodeFirst |
(T51-T65) to identify external agent
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G21.3 |
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Postencephalitic parkinsonism |
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G21.4 |
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Vascular parkinsonism |
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G21.8 |
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Other secondary parkinsonism |
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G21.9 |
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Secondary parkinsonism, unspecified |
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