Developed by Seabourne Consulting, experts in CMS Administrative Claims

CMS Administrative Claims

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Centers for Medicare and Medicaid Services

Data in the Mapping Medicaid Disparities tool come from the Centers for Medicare & Medicaid Services (CMS) administrative claims for Medicare beneficiaries enrolled in the fee-for-service (FFS) program, which are available from CMS through the Chronic Conditions Warehouse (CCW). These claims files are known as CMS Research Identifiable Files (RIF), which consist of the Master Beneficiary Summary File (MBSF) – with beneficiary eligibility, enrollment, beneficiary characteristic data – and final action items for services/claims covered by Medicare Part A (hospital insurance) and Part B (medical insurance). 

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Disparities in Healthcare

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