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2025 Medicare Part C & Part D Reporting Requirements & Data Validation

Data Extraction Process Detail

Requirement for Extraction & Review of Source Data

The following table offers guidance on examples of source data needed for each Part C reporting section. Since the list isn’t comprehensive, other source data could exist. CMS requires the DVC to make sure that all samples represent the underlying population (full census data set).

Table 16: Examples of Source Data Needed for Each Part C Reporting Section
Part C Reporting SectionsExample Source Data
GrievancesCustomer Service Call Logs
Member Letters
Case Notes
Organization Determinations/ReconsiderationsAdjudicated Claims
Customer Service Call Logs
Member/Provider/Authorized Representative Requests
SNPs Care ManagementEnrollment Files A and B
Electronic or paper copies of the completed health risk assessment (HRA) tool, evidence of communication (fax, email, letter) with providers for verification of care (reports from specialists, copies of medical records, copies of medical histories), the Outcome and Assessment Information Set (OASIS) assessment tool for beneficiaries receiving home care, or the Minimum Data Set (MDS) assessment tool for beneficiaries in LTC facilities