MedicaidAdministrativeMedium impact
Update: New and Revised Sections Published under the Comprehensive Billing Guide for Medicaid Managed Care Services
Illinois Medicaid - HFS·IL·Provider Notice
Effective date
Sep 16, 2020
We identified it
Jun 20, 2026
Summary
Illinois has updated its Comprehensive Billing Guide for Medicaid Managed Care with new sections on Home Health Care, HCBS Waiver Providers, and revised guidance for outpatient hospital billing, transportation services, and substance abuse treatment. The guide consolidates billing requirements across all Illinois Medicaid MCOs into a single resource.
Action Required
Immediately: Billing team should review the updated Comprehensive Billing Guide on the IAMHP website, particularly focusing on outpatient hospital billing changes effective July 1, 2020, updated claim disposition processes by MCO, and clarified MAT services billing as weekly events. Update internal procedures to align with new MCO requirements for applicable service areas.