Before you enroll in any health plan—or switch plans during open enrollment—checking the formulary is essential if you take prescription medication. A formulary is your health plan's list of covered drugs, organized into tiers with different cost-sharing amounts. A drug that costs $10 a month under one plan might cost $150 a month under another, purely because of how it's tiered in the formulary.
How Formularies Are Organized
Most Florida health plans organize their formularies into tiers, typically numbered 1 through 4 or 5:
| Tier | Drug Type | Typical Cost-Sharing |
|---|---|---|
| Tier 1 | Generic drugs | Lowest copay ($0–$15) |
| Tier 2 | Preferred brand-name drugs | Low-mid copay ($25–$60) |
| Tier 3 | Non-preferred brand-name drugs | Mid copay ($50–$100) |
| Tier 4 | Specialty drugs | High coinsurance (20–40% of cost) |
| Tier 5 (some plans) | Ultra-specialty drugs | Highest cost-sharing |
The lower the tier, the less you pay. Insurers incentivize the use of generics and preferred brands by placing them at lower tiers.
How to Look Up Your Drugs
Every health insurer publishes their formulary online—it's typically searchable by drug name. Before enrolling in a plan:
- List all medications you take, including dosage and frequency.
- Visit each plan's website and search the formulary for each drug.
- Note which tier each drug falls into.
- Check the copay or coinsurance amount for that tier.
- Multiply by 12 months to estimate your annual drug cost under each plan.
Add this to your premium comparison—your monthly premium and your drug costs together are your true insurance cost.
Formularies Change Year to Year
This is critical: formularies are not fixed. Insurers review and revise them every year. A drug that was Tier 2 last year may be Tier 3 next year. A drug that was covered may be removed from the formulary entirely. During open enrollment, always recheck the new year's formulary—don't assume last year's terms still apply.
Insurers can also make formulary changes during the plan year—though they must give notice. If your drug is removed mid-year or moved to a higher tier, you may be able to request an exception or use a transition supply. Contact your insurer's pharmacy benefits team immediately if this happens.
Formulary Exceptions and Step Therapy
If your drug isn't on the formulary or is placed at a tier that makes it unaffordable, you have options:
- Formulary exception: Ask your doctor to submit a request explaining why the non-formulary drug is medically necessary. Your insurer reviews these and may approve coverage.
- Step therapy override: Some plans require you to try a lower-cost drug first (step therapy) before covering a more expensive one. If your doctor documents that you've already tried the step drug or that it's contraindicated, you may be able to skip the step requirement.
- Manufacturer copay assistance: Pharmaceutical companies offer copay cards and patient assistance programs that can reduce your out-of-pocket cost for brand-name drugs, regardless of tier placement.
Specialty Drug Considerations in Florida
For specialty medications—biologics, cancer drugs, multiple sclerosis treatments—the formulary is especially important. These drugs can cost thousands of dollars per month, and the difference between 20% coinsurance and a $100 copay cap is enormous. When evaluating plans for specialty drug users, look for plans that cap coinsurance on Tier 4 drugs at a flat dollar amount rather than a percentage of cost.
Our advisors can help you compare formularies across Florida plans for your specific medications. Get a free plan comparison or use Florida Plan Finder to browse options side by side.