ICD-10-CM Current in FY 2027
G21
Secondary parkinsonism
- Release
- FY 2027
- Effective
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files.
More Specific Codes
7 codes under G21
- G21.0 Malignant neuroleptic syndrome Billable
- G21.1 Other drug-induced secondary parkinsonism Has subcodes
- G21.2 Secondary parkinsonism due to other external agents Billable
- G21.3 Postencephalitic parkinsonism Billable
- G21.4 Vascular parkinsonism Billable
- G21.8 Other secondary parkinsonism Billable
- G21.9 Secondary parkinsonism, unspecified Billable
Version History
How G21 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentSecondary parkinsonism
-
FY 2026 Effective
UnchangedSecondary parkinsonism
Related Codes
Codes whose official notes reference G21
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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