Traditional MedicarePrior AuthMedium impact
Medicare Part D Transition Fills
Illinois Medicaid - HFS·IL · Pharmacy·Provider Notice
Effective date
Apr 1, 2006
We identified it
Jun 21, 2026
Summary
Medicare Part D transition fills for non-formulary drugs ended on March 31, 2006. Beginning April 1, 2006, pharmacies can no longer use transition fill overrides, and prescriptions for non-formulary drugs will be rejected unless proper authorization is in place.
Action Required
Beginning April 1, 2006: Pharmacies must ensure proper authorization is obtained before dispensing non-formulary drugs to Medicare Part D beneficiaries. Prepare for increased volume of denials for non-formulary drugs. Contact help lines and coordinating plans when rejections occur for drugs that were previously fillable through transition overrides.