MedicaidAdministrativeMedium impact
Managed Care Entity Bulletin 129: Important Information About the MassHealth Standardized Encounter Data Program (SENDPro) Project
MassHealth·MA·Managed Care
Effective date
Jan 1, 2026
We identified it
Jun 18, 2026
Summary
MassHealth is transitioning managed care entities from flat-file encounter data submissions to the new SENDPro platform using industry-standard EDI X12 837 and NCPDP formats, effective January 1, 2026. This change affects all providers in MassHealth managed care networks and requires system updates to support the new data submission requirements.
Action Required
By December 31, 2025: Billing teams working with MassHealth managed care plans must coordinate with their MCE partners to ensure systems are updated to support the new SENDPro encounter data submission format. Review upcoming MassHealth companion guides and prepare for more rigorous validation processes that may reject encounter records until errors are resolved. Monitor communications from MCEs regarding specific configuration requirements.