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Race/Ethnicity Data in CMS Medicaid (T-MSIS) Analytic Files: 2020 Data Assessment

The Transformed Medicaid Statistical Information System (T-MSIS) is the largest national database of current Medicaid and Children’s Health Insurance Program (CHIP) beneficiary information collected from U.S. states, territories, and the District of Columbia (DC). This blog shares how CMS guides researchers and other consumers in their use of T-MSIS data through production of data quality assessments of the race and ethnicity data along with other data such as enrollment, claims, expenditures, and service use.



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