G20.C PARKINSONISM, UNSPECIFIED

Code Information

  • Diagnosis Code: G20.C
  • Short Description: Parkinsonism, unspecified
  • Long Description: Parkinsonism, unspecified
  • Code Version: 2025 ICD-10-CM

The code G20.C is VALID for claim submission

Code Classification

Synonyms

  • Adult-onset dystonia parkinsonism
  • Amyotrophic lateral sclerosis with dementia
  • Amyotrophic lateral sclerosis with dementia
  • Amyotrophic lateral sclerosis with parkinsonism
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex of Kii Peninsula
  • Amyotrophic lateral sclerosis, parkinsonism, dementia complex of West New Guinea
  • Atypical juvenile parkinsonism
  • Atypical Parkinsonism
  • Dissociative neurological symptom disorder co-occurrent with parkinsonism
  • Dopamine transporter deficiency syndrome
  • Early onset parkinsonism and intellectual disability syndrome
  • Frontotemporal dementia with parkinsonism-17
  • Functional parkinsonism
  • Hemiparkinsonism hemiatrophy syndrome
  • Hypokinetic parkinsonian dysphonia
  • Parkinsonian facies
  • Parkinsonian pyramidal syndrome
  • Parkinsonian tremor
  • Parkinsonism
  • Parkinsonism due to heredodegenerative disorder
  • Parkinsonism with polyneuropathy
  • Parkinson's disease
  • Parkinson's disease
  • Perry syndrome
  • Rapid onset dystonia parkinsonism
  • Symptomatic parkinsonism
  • X-linked dystonia parkinsonism
  • X-linked parkinsonism with spasticity syndrome
  • Young onset Parkinson disease
  • Young onset Parkinson disease

References to Index of Diseases and Injuries

The code G20.C has the following ICD-10-CM references to the Index of Diseases and Injuries

  • Inclusion Terms:
    • Parkinsonism, NOS
  • Type 1 Excludes Notes:
    • Parkinson's disease NOS (@G20.A1*)
    • Parkinson's disease with dyskinesia (@G20.B*-)
    • Parkinson's disease without dyskinesia (@G20.A*-)
    • secondary parkinsonism (@G21*.-)

Similar Codes

ICD-10 Code ICD-10 Description
G20 Parkinson's disease
G20.A Parkinson's disease without dyskinesia
G20.A1 Parkinson's disease without dyskinesia, without mention of fluctuations
G20.A2 Parkinson's disease without dyskinesia, with fluctuations
G20.B Parkinson's disease with dyskinesia
G20.B1 Parkinson's disease with dyskinesia, without mention of fluctuations
G20.B2 Parkinson's disease with dyskinesia, with fluctuations
This page was last updated on: 10/1/2025
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