Traditional MedicareAdministrativeHigh impact
Medicare Crossover Invoice – HFS 3797
Illinois Medicaid - HFS·IL·Provider Notice
Effective date
Jan 1, 2006
We identified it
Jun 21, 2026
Summary
Illinois Healthcare and Family Services introduces new streamlined billing procedures for Medicare Crossover claims effective January 1, 2006. Providers can now use electronic submission through MEDI/IEC system or new paper form HFS 3797, eliminating the need for multiple attachments previously required.
Action Required
By April 1, 2006: Billing team must transition to using either the MEDI/IEC electronic system or new HFS 3797 paper form for all Medicare Crossover claims. Register at http://www.myhfs.illinois.gov/ for electronic submission or request HFS 3797 forms and HFS 824MCR envelopes. Stop using DPA 2360, HCFA 1500, HCFA 1491 forms and Medicare EOB attachments. Claims submitted on old forms after April 1, 2006 will be returned to provider.