The Children's Medical Security Plan (CMSP) provides essential primary and preventive health care services for children and adolescents up to age 18 who are not eligible for other MassHealth benefits, except for MassHealth Limited, and are uninsured. As of the end of the second quarter of Fiscal Year 2026, there were 75,233 children eligible for CMSP, with enrollment demographics showing a peak of 79,028 in October 2025. Notably, effective January 1, 2025, enrollee premiums were set to zero for those with incomes up to 300% of the Federal Poverty Level, while a sliding scale was established for those with higher incomes. Additionally, all copayments for CMSP members were eliminated.

During the second quarter of FY 2026, total expenditures for CMSP amounted to $11,098,603, covering 158,064 claims across medical, dental, and pharmacy services. The breakdown of spending included $9,692,216 for medical claims, $1,191,579 for dental claims, and $214,808 for pharmacy claims. The report highlights the importance of CMSP in providing access to necessary health services for eligible children, while also indicating that eligibility does not guarantee service utilization.