G20.A1
Billable codeParkinson's disease without dyskinesia, without mention of fluctuations
The ICD-10 code for parkinson's disease without dyskinesia, without mention of fluctuations is G20.A1.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Parkinson's disease NOS
- Parkinson's disease without dyskinesia, without mention of OFF episodes
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G20.A2Parkinson's disease without dyskinesia, with fluctuations
- G20.A1Parkinson's disease without dyskinesia, without mention of fluctuations
Associated MS-DRGs
G20.A1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.