Trends in Dual-Eligible Enrollees' Access to Drugs Under Part D, 2011-2025
Dual-eligible enrollees-that is, people enrolled in both Medicare and Medicaid—have received prescription drug coverage under Medicare Part D since 2006. As long as Part D plans meet certain limitations outlined in 42 CFR § 423.120, Part D sponsors have discretion to include different drugs in their formularies. This work will report trends in the extent to which formularies used by Part D plans included drugs commonly used by dual-eligible enrollees, which OIG has analyzed annually as required by law, from 2011 to 2025.
Announced or Revised | Agency | Title | Component | Report Number(s) | Expected Issue Date (FY) |
---|---|---|---|---|---|
July 2025 | CMS | Trends in Dual-Eligible Enrollees' Access to Drugs Under Part D, 2011-2025 | Office of Evaluation and Inspections | OEI-05-25-00350 | 2025 |