What is a “formulary” in Part D Medicare?

A formulary is a comprehensive list of prescription drugs covered by each Part D Medicare plan. While Medicare provides guidelines to insurance companies about drug classes that must be covered, it doesn’t specify exact medications that must be included. Some drugs are excluded from Medicare’s required coverage list, but Part D plans can include them […]

What does a Medicare drug formulary with tiers mean?

Every Part D plan has something called a formulary, which is a list of drugs covered under the plan. Each formulary has a set of tiers, and in most cases, Part D plans have between three and six tiers. A lower-tier drug usually has lower copays or coinsurance than a drug in a higher tier. […]