2025
ICD-10-CM
Diagnosis
Code

G20.C Parkinsonism, unspecified

  • Billable
  • 2024–2025

G20.C is a billable/specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Parkinsonism, unspecified.

Inclusion term

  • Parkinsonism, NOS

Type 1 excludes

  • Parkinson's disease NOS (G20.A1)

  • Parkinson's disease with dyskinesia (G20.B-)

  • Parkinson's disease without dyskinesia (G20.A-)

  • Secondary parkinsonism (G21.-)

Versions

  1. 2025

    Code changed

    • Type 1 excludes

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

  2. 2024

    New code