Back to top

When a Medicare beneficiary with Part D coverage fills a prescription, the prescription drug plan submits a record to CMS. The PDE file includes all transactions covered by the Medicare prescription drug plan for both Prescription Drug Plans (PDPs) and Medicare Advantage Prescription Drug Plans (MA-PDs).


  • Why do researchers request this file?
    • Studies that include prescription drugs as a treatment of interest
    • Research comparing outcomes of treatment
  • Special considerations
    •  These files do not have information on drugs given during hospitalizations or which are paid under other auspices (e.g., hospice)
    • If the Drug characteristics variables are selected during the request process, these are appended to the PDE.
Privacy Level
Research Identifiable Files