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Home/Diagnosis/ICD-10 Coding for Parkinsonism

ICD-10 Coding for Parkinsonism

G20
G21.11

Complete ICD-10-CM coding and documentation guide for icd-10 coding for parkinsonism includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Parkinson's Disease
Secondary Parkinsonism
Drug-induced Parkinsonism
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Key Information: ICD-10 Coding for Parkinsonism

Essential facts and insights about ICD-10 Coding for Parkinsonism

Use ICD-10 code G20 for parkinson's disease, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Parkinson's disease

Non-Billable
G20
Non-Billable

Diagnostic Criteria

clinical_criteria:
  • • Idiopathic onset with response to levodopa

Applicable To

  • • Idiopathic Parkinson's disease
  • • Hemiparkinsonism
  • • Paralysis agitans

Important Notes

  • • Ensure documentation specifies idiopathic nature and response to treatment.

Drug-induced secondary parkinsonism

Billable Code
G21.11
Billable

Diagnostic Criteria

clinical_validation_requirements:
  • • Temporal relationship to neuroleptic use
  • • Negative DaTscan

Applicable To

  • • Parkinsonism due to neuroleptic drugs

Important Notes

  • • Ensure documentation links symptoms to drug use.
Ancillary Codes

Additional codes that may be used with this diagnosis

F02.81

Dementia in other diseases classified elsewhere with behavioral disturbance

Use when dementia with behavioral disturbance is present in Parkinson's disease.

T43.3X5A

Adverse effect of neuroleptics

Use to specify the drug causing parkinsonism.

Frequently Asked Questions

What is the ICD-10 code for Parkinson's disease?

The ICD-10 code for Parkinson's disease is G20, which covers idiopathic Parkinson's disease and related disorders.

How do you code drug-induced parkinsonism?

Drug-induced parkinsonism is coded as G21.11, with an additional T code for the specific drug causing the adverse effect.

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