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ICD-10 CM Code G21.9

G21 Secondary parkinsonism

G21.9 Secondary parkinsonism, unspecified

Excludes Type 1

dementia with Parkinsonism (G31.83)
Huntington's disease (G10)
Shy-Drager syndrome (G90.3)
syphilitic Parkinsonism (A52.19)

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