Medicare Part D: 100-Day Supply Available for Most Generics

Most members with Medicare Part D coverage are eligible to receive up to a 100-day supply for generic medications on Tier 1 and Tier 2 of Highmark’s formularies. When appropriate, providers are encouraged to write prescriptions for this higher day supply.

Some examples of Tier 1 or Tier 2 drugs eligible for a 100-day supply include Lisinopril, Metformin, and Atorvastatin. This change went into effect on Jan. 1, 2024.

Writing prescriptions for a 100-day supply will save your Medicare patients money and promote better adherence.

If you are unsure whether the member has this benefit, or what tier the medication is, see our Tip Sheet, which is accessible from the left menu on the Provider Resource Center (PRC) under PHARMACY PROGRAM/FORMULARIES and then click Medicare Formularies.