In its passage of the Inflation Reduction Act of 2022, Congress has taken the long overdue step of eliminating out of pocket, or OOP, costs for vaccines under Medicare Part D. The OOP prohibition aligns with policies under Medicare Part B and the Affordable Care Act and removes a pharmacy counter barrier that will undoubtedly lead more seniors to be vaccinated against shingles. However, it leaves intact a peculiar split in Medicare vaccine coverage that discourages physicians from offering certain vaccines.