MedicaidBilling CodesMedium impact
Billing T1040 for Behavioral Health Encounters - Effective Date Extension to February 1, 2023
Illinois Medicaid - HFS·IL · Psychiatry·Provider Notice
Effective date
Feb 1, 2023
We identified it
Jun 20, 2026
Summary
The effective date for billing procedure code T1040 for behavioral health encounters has been extended from December 1, 2022 to February 1, 2023. This extension applies to Encounter Rate Clinics, Federally Qualified Health Centers, and Rural Health Clinics billing under Medicaid fee-for-service and HealthChoice Illinois managed care plans.
Action Required
Before February 1, 2023: Billing teams at ERCs, FQHCs, and RHCs must update billing systems to use procedure code T1040 for behavioral health encounters. Contact Bureau of Professional and Ancillary Services at 877-782-5565 for FFS claims questions or applicable HCI MCO for managed care questions.