When medically necessary, people with Part D have the right to request that their plan allow them to pay less for high-cost medications when a similar, lower-cost medicine is available on their plan’s formulary—this is known as a tiering exception. Unfairly, these same rights are not granted to beneficiaries whose prescription drugs are placed on the plan’s specialty tier, where cost-sharing can be exorbitant. Congress should pass legislation allowing Medicare beneficiaries the right to a tiering exception for specialty tier medications.