1. Employee Support
  2. Health Insurance 101

Drug Formulary Tiers

The common tiers for medications within a health insurance plan.

Formulary tiers are levels within a health insurance plan's list of covered prescription drugs, known as the formulary. Each tier typically reflects the cost and type of medications covered. Here’s a common tier structure:

  1. Tier 1: Generic Drugs

    • These are medications that are equivalent to brand-name drugs in dosage, strength, and administration but are sold at a lower cost. They are often the least expensive option in terms of copayments or coinsurance.
  2. Tier 2: Preferred Brand-Name Drugs

    • These are brand-name drugs that are preferred by the insurance plan for their cost-effectiveness. They are more expensive than generic drugs but are cheaper than non-preferred brand-name drugs.
  3. Tier 3: Non-Preferred Brand-Name Drugs

    • These are brand-name drugs that are not preferred by the insurance plan. They typically have higher copayments or coinsurance compared to Tier 1 and Tier 2 drugs.
  4. Tier 4: Specialty Drugs

    • Specialty drugs are high-cost medications used to treat complex or rare conditions. They often require special handling, administration, or monitoring. These drugs usually have the highest copayments or coinsurance and may be subject to additional requirements or restrictions.