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

Data Extraction Process Detail

Extraction of the Sample Data

The following table lists the sampling unit and the minimum sample size for each Part D reporting section. Note that these are only minimum sample sizes and larger samples may be necessary.

Table 14: Sampling Unit and Minimum Sample Size for Each Part D Reporting Section
Part D Reporting SectionSampling UnitSample Size
GrievancesCase ID150
Coverage Determinations/RedeterminationsCase ID150
Improving Drug Utilization Review ControlsMember ID205

Note: The Medication Therapy Management Program reporting section doesn’t appear in this table because there should be no requirement to sample the data instead of a census file since the beneficiary upload file can serve as the census file.