MedicaidAdministrativeMedium impact
KMAP BULLETIN: KMMS Go-Live Activity Timeline for KanCare MCOs
Kansas Medicaid (KanCare)·KS·Provider Bulletin
Effective date
Aug 29, 2025
We identified it
Jun 21, 2026
Summary
Kansas Medicaid system (KMMS) will undergo a major upgrade from August 29 to September 1, 2025, causing temporary disruptions to eligibility verification, file processing, and other system functions. Multiple data files will be delayed or held during the implementation weekend.
Action Required
Before August 29, 2025: Billing team should verify patient eligibility earlier in the week before the system downtime. Plan for potential delays in eligibility verification (270/271 transactions) from Friday 6 PM August 29 through Monday 2 AM September 1. Update staff to expect processing delays for Medicaid files through September 2, 2025.