G20.C: Parkinsonism, unspecified
G20.C is the billable ICD-10-CM diagnosis code for Parkinsonism, unspecified. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code G20.C?
G20.C is the ICD-10-CM diagnosis code for Parkinsonism, unspecified. It belongs to category G20 (Parkinson's disease).
Is G20.C a billable code?
Yes. G20.C is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does G20.C belong to?
G20.C is part of ICD-10-CM category G20 — Parkinson's disease, which has 10 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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