MedicaidBilling CodesHigh impact
Publication of Revised Community-based Behavioral Services Fee Schedules, System Issue Resolutions and Billing Guidance
Illinois Medicaid - HFS·IL · Psychiatry·Provider Notice
Effective date
Dec 1, 2022
We identified it
Jun 20, 2026
Summary
Illinois revised Community-based Behavioral Services fee schedules requiring specific modifiers HK and SE for codes T1999 and H0046 based on customer enrollment programs. Providers must rebill affected claims from December 1, 2022 to October 31, 2024 with correct modifiers.
Action Required
Immediately: Billing team must rebill all T1999 and H0046 claims with dates of service between December 1, 2022 and October 31, 2024 using modifier HK for Pathways to Success program customers and modifier SE for Family Support Program customers. Submit HFS 1624 Override Request Form electronically for timely filing override. Update billing system to require these modifiers for future claims. Contact 877-782-5565 (option 1, 2, 4, then 8) for questions.