G20.A Parkinson's disease without dyskinesia

The ICD-10-CM code for Parkinson's disease without dyskinesia is G20.A (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G20-G26: Extrapyramidal and movement disorders (G20-G26)

Category G20

8 codes (5 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool