CMS Links State Records to Stop Duplicate Medicaid Enrollment
Published Date: 10/29/2026
Notice
Summary
The Centers for Medicare & Medicaid Services (CMS) is launching a new computer matching program with state agencies to help figure out who qualifies for health subsidies like Medicaid, CHIP, and other plans under the Affordable Care Act. This program also stops people from signing up for Medicaid in more than one state at the same time. It starts soon, runs for about 18 months, and could be extended without extra costs if all goes well.
Analyzed Economic Effects
4 provisions identified: 3 benefits, 1 costs, 0 mixed.
Automated checks to determine subsidy eligibility
CMS will share information with State-Based Administering Entities (AEs) to help AEs verify applicant information and decide eligibility for enrollment in state health subsidy programs, including Qualified Health Plans, Medicaid, CHIP, and Basic Health Programs. This computer matching supports redeterminations, renewals, and periodic verification and will be conducted through a CMS data services hub during the re-established matching period (initially about October 2025 to March 2027).
Stops simultaneous Medicaid enrollment across States
The matching program will share information among CMS and AEs to prevent concurrent Medicaid enrollment in more than one State using the Multi-State Enrollment Prevention (MSEP) system. The purpose is to verify whether applicants or enrollees are currently eligible for or enrolled in a Medicaid/CHIP program in another State.
Extensive personal data will be matched and shared
The matching program will use and exchange identifying records and sensitive data elements, including Social Security Number, name, date of birth, Federal Tax Information (income and family size), citizenship or immigration status, incarceration status, Social Security Title II benefits, veteran disability rating data, educational enrollment, and death indicators. AEs will both send and receive these categories of records through the CMS Hub for verification purposes.
Verifies exemptions from coverage and community engagement
The matching program will provide information to AEs to verify applicants' exemption from the requirement to maintain minimum essential coverage (MEC) or from the individual responsibility payment, and to verify Medicaid community engagement status. These verifications support eligibility determinations for state health subsidy programs.
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Key Dates
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