Is G21.1 a billable code?
No. G21.1 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
G21.1: Other drug-induced secondary parkinsonism
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G21.1 groups related diagnoses under other drug-induced secondary parkinsonism. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G21.1
G21.1 questions
What does G21.1 mean?
G21.1 is the ICD-10-CM code for Other drug-induced secondary parkinsonism. 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.