Is G20.C a billable code?
Yes. G20.C is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
G20.C: Parkinsonism, unspecified
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
G20.C is a billable ICD-10-CM diagnosis code for parkinsonism, unspecified. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with G20.C already added.Good Faith EstimateStart a cost estimate with G20.C already added.CMS-1500 Claim FormFill a claim form with G20.C in box 21.
Other codes in G20 Parkinson's disease
G20.C questions
What does G20.C mean?
G20.C is the ICD-10-CM code for Parkinsonism, unspecified. 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.