G21Non-billable (header)
Secondary parkinsonism
✗ Excludes 1(Not coded here)
- •Huntington's disease (G10)
- •neurocognitive disorder with Lewy bodies (G31.83)
- •Shy-Drager syndrome (G90.3)
- •syphilitic Parkinsonism (A52.19)
Code Hierarchy
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