MedicaidAdministrativeMedium impact
Reminder - Retroactive Provider Enrollment Date Prohibited
Illinois Medicaid - HFS·IL·Provider Notice
Effective date
Mar 9, 2022
We identified it
Jun 20, 2026
Summary
Illinois Medicaid providers cannot have retroactive enrollment dates - the effective date for new provider enrollments is the submission date in the IMPACT system. Providers cannot be reimbursed for services provided to Medicaid beneficiaries before their official enrollment effective date.
Action Required
Immediately: Ensure all new providers complete IMPACT enrollment before providing services to Medicaid patients. Credentialing staff must verify enrollment approval email and Provider Information Sheet before allowing Medicaid billing. Do not submit claims for services provided before the IMPACT enrollment submission date as they will be denied.