Check our drug list

Other prescription drug information

Changes to the formulary (list of covered drugs)

We review our drug list on a monthly basis and make changes as necessary. Most changes are positive. An example would be adding new generics that have come on the market.

Sometimes we have to remove a drug from our formulary. An example is if the U.S. Food and Drug Administration (FDA) says a drug is unsafe or the drug maker takes the drug off the market.

Prior authorization, quantity limits and step therapy

Some drugs have rules you need to follow before we cover them. These include:

• Prior authorization: You or your doctor must get approval from us before we cover the drug. 

  • 2024 Prior Authorization Information - Classic + (PDF)

  • 2025 Prior Authorization Information - Comprehensive + (PDF)
    2025 Prior Authorization Information - Classic (PDF)

• Step therapy: We require you to try another drug first before we cover your drug. 

  • 2024 Step Therapy Information (PDF)

  • 2025 Step Therapy Information - Comprehensive + (PDF)
    2025 Step Therapy Information - Classic (PDF)

• Quantity limits: For certain drugs, we limit the amount you can get. 

You and your doctor can ask us to make an exception to one of our coverage rules. This includes requesting an exception to a prior authorization, step therapy or quantity limit rule.

Request an exception online

Transition rules

There may be times where you’re taking a drug that either isn’t on our drug list or has special rules before we cover it. Learn about our transition process to see if you’re eligible for a short-term supply of medication while you move to a drug we do cover. This temporary supply allows you to work with your doctor to either transition to a new drug or request an exception to continue your current drug.

Details about our 2021 transition process (PDF)

2024 Drug List Changes (PDF)
2025 Drug List Changes (PDF)