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Part C and Part D Data Validation

This section contains information related to the Centers for Medicare & Medicaid Services' (CMS) data validation of the Part C and Part D reporting requirements. Organizations contracted to offer Medicare Part C and Part D benefits are required to report data to CMS on a variety of measures. CMS has developed reporting standards and data validation specifications with respect to the Part C and Part D reporting requirements. These standards and specifications provide a review process for Medicare Advantage Organizations (MAOs), Cost Plans, and Part D sponsors to use to conduct data validation checks on their reported Part C and Part D data. The data validation will be “retrospective,” first occurring in 2011 for CY 2010 data. In order to ensure the independence of the data validation, organizations will not use their own staff to conduct the data validation. Instead, MAOs, Cost Plans, and Part D sponsors will be responsible for acquiring external data validation resources. Final Part C reporting requirements and related documents are posted in the downloads section of this page. Click the selection that best matches your information needs. Please check back, as we will continue to update these resources regularly.