G21
G21: Secondary parkinsonism
Non-billable headerICD-10-CM
G21 is a non-billable header ICD-10-CM code for secondary parkinsonism. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with G21
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead G21
7 child codes. Green means billable.