Is G20.B a billable code?
No. G20.B is a header code that groups 2 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
G20.B: Parkinson's disease with dyskinesia
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G20.B groups related diagnoses under parkinson's disease with dyskinesia. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G20.B
- G20.B1Parkinson's disease with dyskinesia, without mention of fluctuations
- G20.B2Parkinson's disease with dyskinesia, with fluctuations
Other codes in G20 Parkinson's disease
G20.B questions
What does G20.B mean?
G20.B is the ICD-10-CM code for Parkinson's disease with dyskinesia. It is in chapter 6, Diseases of the nervous system (G00-G99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.