A formulary is the list of prescription medications covered by a health insurance plan. The list typically has brand-name and generic options. In addition to medications, a formulary can also include other products and technologies, such as diabetes supplies and digital therapeutics.
Health plans develop formularies to provide enrollees access to treatments for a full range of conditions that will improve health outcomes. But when selecting these medications, insurance companies also factor in the cost of covering a particular drug.
Research by GoodRx, a platform for medication savings, found that formularies are shrinking across insurance plan types. A smaller share of available drugs are covered by health plans — and those that remain are more likely to be subject to restrictions, such as prior authorization.
Sometimes, a treatment that once appeared on your formulary can get removed unexpectedly during the year. Read on to see why these changes happen and what you can do if your medication gets dropped by your plan.
Key takeaways:
There are many reasons why your insurance plan may no longer cover a medication. For each plan year, the formulary is published — usually prior to open enrollment — to help consumers choose a health plan that’s best for them. What many people don’t realize is that throughout the year, the list of prescription options can be continually updated. Here are some reasons why your formulary may no longer include a medication, product, or technology:
Insurance plans are required to notify enrollees about formulary changes. This includes commercial insurance plans, Affordable Care Act (ACA) plans, Medicare Advantage plans, and Medicare Part D plans. Medications that have FDA safety concerns, or those that are removed from the market, are taken off formularies immediately, and enrollees are informed. Otherwise, the notification must come at least 60 days before the formulary change is effective or when the enrollee requests a refill. Then, you are eligible for a 60-day supply. In some cases, your health plan will continue covering a dropped drug until the end of the year.
Not all medications appear on every formulary. Certain medications are more likely to be omitted. Drugs that are not usually covered by insurance can include:
Glucagon-like peptide-1 (GLP-1) receptor agonists manage blood glucose, but some are also approved to help people lose weight. Ozempic (semaglutide), Victoza (liraglutide), and Mounjaro (tirzepatide) treat Type 2 diabetes. But Wegovy (semaglutide), Saxenda (liraglutide), and Zepbound (tirzepatide) are versions of those medications that are used for weight loss.
Cost management is the main reason insurance plans are dropping GLP-1 medications or deciding to deem fewer of them as “preferred” medications. An insurance plan also can determine that one GLP-1 medication is medically necessary, while another is not.
GoodRx is tracking GLP-1 insurance coverage changes and providing trend updates as they happen.
If your prescription plan won’t cover a medication, you have options that include:
If you file an appeal, follow your insurance plan’s appeal process, which may include sending an appeal letter as well as forms handled by your prescriber. You can request an independent review by a third party if your appeal is turned down.
The Medicare Part D appeals process may vary depending on whether you have a standalone plan or prescription coverage included in a Medicare Advantage plan.
Formulary changes can happen at any time. Coverage changes are especially common for high-cost medications and specialty drugs.
Your formulary is a living document that can change during the coverage year. A medication, product, or technology you need can be dropped at any time. Across insurance plans, prescription coverage is becoming less comprehensive and more restrictive.
Your prescription plan should notify you if your treatment is dropped from the formulary. When this happens, you have options. Sometimes, you are eligible for a final 60-day refill or coverage until the end of the year. Otherwise, you can talk to your prescriber about alternatives, ask your plan for an exception, or file an appeal.
This story was produced by GoodRx and reviewed and distributed by Stacker.
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