MedicaidCoverageMedium impact
Updated Preferred Drug List (PDL)
Illinois Medicaid - HFS·IL·Provider Notice
Effective date
Mar 13, 2025
We identified it
Jun 20, 2026
Summary
The Department of Healthcare and Family Services is posting an updated Preferred Drug List (PDL) on March 13, 2025, containing all changes from the past 12 months. While the prior authorization system is temporarily down, providers are strongly encouraged to prescribe only PDL drugs to prevent patients from needing medication changes when prior authorization is restored.
Action Required
By March 13, 2025: Providers should review the updated PDL at the HFS website and prioritize prescribing drugs from the preferred list when clinically appropriate. Pharmacies should fill using PDL drugs to prevent future medication changes when prior authorization system is restored. Contact pharmacy billing advisor at 877-782-5565, Option 7 for questions.