G20.C

Billable

Parkinsonism, unspecified

G20.C is the ICD-10-CM code for Parkinsonism, unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
G00-G99
Parent
G20
Edition
FY2026

G00-G99 Diseases of the nervous system

Includes

  • Parkinsonism, NOS

Excludes1 — not coded here

  • Parkinson's disease NOS (G20.A1)
  • Parkinson's disease with dyskinesia (G20.B-)
  • Parkinson's disease without dyskinesia (G20.A-)
  • secondary parkinsonism (G21.-)

Frequently asked questions

What is ICD-10 code G20.C?
G20.C is the ICD-10-CM code for "Parkinsonism, unspecified". It falls under G00-G99 Diseases of the nervous system.
Is G20.C a billable code?
Yes — G20.C is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from G20.C?
Excludes1 (not coded here): Parkinson's disease NOS (G20.A1); Parkinson's disease with dyskinesia (G20.B-); Parkinson's disease without dyskinesia (G20.A-); secondary parkinsonism (G21.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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