State Data
Resource Center

Resources for States Integrating Medicare and Medicaid Data

The Medicare–Medicaid Data Integration (MMDI) program has developed many tools designed to assist State Medicaid Agencies (SMAs) with the acquisition, integration, and utilization of Medicare data. For more information about any of the tools, use cases, or webinars listed below, please contact

COBA Mapping Webinar
This webinar provides an overview of the Coordination of Benefits Agreement (COBA) to the Chronic Conditions Warehouse (CCW) historic Part A/B Mapping document, which the MMDI team developed to assist SMAs in understanding how COBA claims equate to and differ from the historic Part A/B data received from the CCW.

MPI Webinar
The MPI webinar was developed to provide SMAs with the rationale for implementing an MPI and introduces three methodologies a SMA could use to do so. By using an MPI, SMAs can link an enrollee across all data sources, providing a more holistic view of each individual. The webinar also discusses which identifiers a SMA could use to link an enrollee across data sources.

Medicare Database Staging Model (DSM) Mapping Webinar
This webinar focuses on how the SMAs can utilize the DSM. It introduces and explains the DSM concept and walks through, in detail, how to unpack, view, and generate the DSM. The DSM accounts for each Medicare data source and provides a loading strategy for each. The webinar also covers how utilizing the DSM is a helpful first step toward formulating a data integration plan and analyzing the data.

Final Action Indicator Webinar
The final action indicator webinar explains why SMAs need to apply a final action indicator to both the Part D Prescription Drug Event (PDE) data and the Enhanced COBA data. It introduces the separate algorithms developed by the MMDI team and discusses how and when they should be applied. The webinar also details how to identify and flag the final version of an event or claim.

Duals Profile Use Case Webinar
This webinar reviews the duals profile use case developed by the MMDI team. It examines the benefits to the SMAs in gaining a better understanding of their dual-eligible population, the data used to support this use case, a review of the variables used to identify dual status, considerations when using Medicare and Medicaid data, and the elements included in the duals profile use case.

MBSF Population Macro Webinar
SMAs that use the beneficiary and enrollment data in the Master Beneficiary Summary File (MBSF) for their analytics may encounter challenges in extrapolating monthly variables for quarterly or yearly applications. This webinar provides a basic orientation to the MBSF data and an overview of the Population Macro, a SAS tool developed by the MMDI team. The Population Macro is available to SMAs to standardize the process for creating a beneficiary-level demographic file, which is useful for performing analytics on dual-eligible populations.

For more information about any of the tools, use cases, or webinars, please contact