How Marketplace Plans Cover Prescriptions
By BetterBuyRx Editorial Team
Written for cost and savings education only — not medical advice, and not medically reviewed. Always confirm details with your doctor or pharmacist. See our methodology.
Last updated
All ACA Marketplace health plans must cover prescription drugs as one of 10 required essential health benefits, but which specific drugs are covered, and at what cost to you, depends on each plan's individual formulary. Drugs are typically grouped into cost tiers, and if your medication isn't listed, you or your doctor can request a formulary exception. Comparing your plan's formulary before enrolling can prevent costly surprises later.
If you're shopping for coverage on the ACA Marketplace, prescription drug coverage is guaranteed to be included, but the details of what that actually means for your specific medications require some homework. Here's how Marketplace prescription coverage actually works.
Why prescription coverage is guaranteed, but details vary
Under the Affordable Care Act, prescription drugs are one of 10 essential health benefit categories that every Marketplace plan must cover, according to CMS's Essential Health Benefits overview. This means you won't find a Marketplace plan with zero prescription drug coverage. However, HealthCare.gov's guide to what Marketplace plans cover makes clear that each insurer designs its own formulary, the specific list of covered drugs, so two plans can both technically meet the essential health benefit requirement while covering very different medications or charging very different copays for the same drug.
Compare prescription prices on BetterBuyRx to see cash pricing for your medications while you're evaluating Marketplace plan options, since formulary coverage is only part of the total cost picture.
How formulary tiers affect what you pay
Most Marketplace plans organize covered drugs into tiers, with lower tiers generally reserved for preferred generics and higher tiers covering brand-name or specialty drugs. According to HealthCare.gov's prescription medications page, your copay or coinsurance amount typically increases as you move up through the tiers. Before enrolling, or before filling a new prescription under an existing plan, it's worth checking exactly which tier your medication falls into, since this can significantly affect what you pay out of pocket.
Typical Marketplace drug tier structure
| Tier | Typical contents | Typical cost to you |
|---|---|---|
| Tier 1 | Preferred generic drugs | Lowest copay |
| Tier 2 | Preferred brand-name drugs | Moderate copay |
| Tier 3 | Non-preferred brand-name drugs | Higher copay or coinsurance |
| Specialty tier | High-cost specialty and biologic drugs | Highest coinsurance, often a percentage of drug cost |
What to do if your medication isn't covered
If a medication you need isn't listed on your plan's formulary at all, you or your prescriber can typically request a formulary exception, asking the insurer to cover the drug based on medical necessity. Per HealthCare.gov, if an exception is granted, the drug is generally treated as covered at the plan's highest applicable copay tier, and your payment counts toward your deductible and out-of-pocket maximum just as it would for any other covered drug. Search your medication on BetterBuyRx in the meantime to understand what the cash price would look like while an exception request is pending.
Checking a plan's formulary before you enroll
Every Marketplace plan is required to make its formulary available, usually through the insurer's website, and you can also review a plan's Summary of Benefits and Coverage document for a general outline of prescription drug cost-sharing. If you take regular medications, checking the specific formulary and tier placement for each plan you're considering, rather than assuming coverage will be similar across plans, is one of the more effective ways to avoid an unpleasant surprise after you've already enrolled.
Comparing your copay against the cash price
Even with Marketplace coverage, it's worth checking whether your copay is actually the lowest available price for a given prescription, particularly for common generic drugs. Check prices near you on BetterBuyRx to compare your plan's copay against the cash price at nearby pharmacies, since for some low-cost generics, paying cash can occasionally work out cheaper than using insurance for that specific fill.
Ask your doctor or pharmacist about formulary alternatives
If your prescribed medication falls into a high-cost tier or isn't covered, ask your doctor or pharmacist whether a covered, therapeutically appropriate alternative exists. Pharmacists in particular can often flag lower-tier options within the same drug class, though only your prescriber can determine whether switching medications is appropriate for your specific health situation.
The bottom line on Marketplace drug coverage
Prescription coverage is guaranteed on every ACA Marketplace plan, but the specific formulary, tier structure, and cost-sharing details vary enough between plans that it's worth checking directly rather than assuming. Compare prescription prices on BetterBuyRx alongside your plan's formulary details, since prices vary by pharmacy, location, quantity, and eligibility.
Frequently asked questions
Are prescription drugs always covered by Marketplace plans?
Prescription drug coverage is one of the 10 essential health benefits that all ACA Marketplace plans must include. However, which specific drugs are covered, and at what cost, depends on each plan's individual formulary, so coverage details differ from plan to plan.
How do I find out if my specific medication is covered by a Marketplace plan?
Check the plan's formulary, usually available on the insurer's website, or review the plan's Summary of Benefits and Coverage before enrolling. You can also call the insurer directly and ask whether your specific medication is covered and which tier it falls under.
What is a drug formulary tier?
A formulary tier is a category insurers use to group covered drugs by cost, typically ranging from lower-cost generics in the lowest tier to specialty or brand-name drugs in higher tiers. Your copay or coinsurance amount usually increases as you move up the tiers.
What if my medication isn't on my Marketplace plan's formulary?
You or your doctor can request a formulary exception, asking the insurer to cover a non-formulary drug based on medical necessity. If approved, the drug is typically treated as covered at the plan's highest applicable copay tier and counts toward your deductible and out-of-pocket maximum.
Can I compare cash prices even if I have Marketplace coverage?
Yes. It's reasonable to compare your plan's copay against the cash price at various pharmacies, since for some lower-cost generics the cash price can be lower than your copay. Comparing both options before filling a prescription is a legitimate way to manage costs.
Sources
Compare prices & find savings
This guide is for cost and savings education only. It is not medical advice. Talk to your doctor or pharmacist before making any changes to your medications. Prices vary by pharmacy, location, quantity, and eligibility, and they change over time.
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