MedicaidAdministrativeMedium impact
UPDATE: New Sections Published under the Comprehensive Billing Guide for Medicaid Managed Care Services
Illinois Medicaid - HFS·IL·Provider Notice
Effective date
Nov 17, 2023
We identified it
Jun 20, 2026
Summary
Illinois Medicaid MCOs released Version 29 of their Comprehensive Billing Guide with updated guidance on billing for Inpatient Hospital Services, specifically adding guidance on billing for different Categories of Service. This creates a single source of billing information for all Illinois Medicaid managed care claims regardless of provider type.
Action Required
Immediately: Billing team should review the updated Version 29 of the IAMHP Comprehensive Billing Manual at https://iamhp.net/providers, focusing on the new Inpatient Hospital Services section. Update billing procedures for Illinois Medicaid MCO claims to align with the new Categories of Service guidance. Contact IAMHP for questions about the billing guide or Bureau of Managed Care at 217-524-7478 for policy questions.