G20
Parkinson's disease
Diseases of the nervous system Billable
Quick Reference
Idiopathic Parkinson's disease with motor symptoms
Clinical Information
When to Use This Code
Idiopathic Parkinson's disease with motor symptoms
Common Clinical Scenarios
- Tremor, rigidity, bradykinesia management
- Carbidopa-levodopa therapy
- Movement disorder neurology referral
- Progressive Parkinson's disease
Documentation Requirements
- Document cardinal features: tremor (resting), rigidity, bradykinesia, postural instability
- Record Hoehn and Yahr stage
- Note medication regimen and response
- Document functional status and ADL impairment
Coding Guidelines
Inclusion Terms
These terms are included in this code:
ParkinsonismIdiopathic Parkinson's diseasePrimary Parkinson's disease
Exclusion Terms
Do NOT use this code for:
- Drug-induced parkinsonism (G21.1-)
- Secondary parkinsonism (G21.-)
- Parkinson's dementia (G31.83)
Coding Notes
Single code covers all idiopathic Parkinson's
Code dementia separately if present (G31.83)
Qualifies for chronic care management
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
G20
Category
Diseases of the nervous system
Billable Status
Billable
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