Step Therapy: When Insurance Requires You to Try Cheaper Drugs First

Step therapy requires you to try a specific, less expensive drug from your plan's list before your insurer will cover a costlier drug for the same condition. Medicare.gov describes it as a type of prior authorization: you try the lower-cost option first, and if it does not work, your plan then covers the more expensive drug (Medicare.gov). Comparing prescription prices can help while you sort out which drug your plan will actually pay for.

How step therapy works, step by step

1. Your doctor prescribes a drug that falls into a category your plan manages with step therapy, often for conditions with multiple similar treatment options.
2. Your plan checks its rules and requires you to first try one or more designated lower-cost drugs, commonly a generic or biosimilar.
3. You try the required drug. If it works, you continue on it. If it does not work, or causes problems, your doctor documents this.
4. Your plan then covers the originally prescribed, higher-cost drug, once the step requirement is satisfied or an exception is granted.

Some plans require trying just one drug first; others require a sequence of two or more before approving the requested medication (Medicare.gov).

Why insurers use step therapy

Step therapy is a cost-management tool. Insurers and their pharmacy benefit managers want to steer patients toward lower-cost, clinically appropriate options before paying for pricier alternatives. From the plan's perspective, if a lower-cost generic works just as well for most patients with a given condition, it makes financial sense to require that drug first. From a patient's perspective, this can mean delays, especially if you already know from past experience that the required first-step drug will not work for you.

Requesting a step therapy exception

You are not always stuck with the plan's required sequence. Medicare.gov confirms that you or your prescriber can contact the plan to request an exception, and your prescriber must submit supporting documentation showing one of the following applies to your case:

• It would be medically necessary for you to take the more expensive drug without trying the less expensive one first.
• You would likely have adverse health effects from the less expensive drug.
• The less expensive drug would likely be less effective for you specifically (Medicare.gov).

If the plan approves the exception, it must cover the originally prescribed drug even though you did not try the required step-one drug (Medicare.gov). If your plan denies the exception request, you generally have the right to appeal that decision through the plan's formal exceptions and appeals process (CMS).

Step therapy vs. other utilization tools

Step therapy is one specific form of prior authorization, distinguished by the "try this first" requirement. For a broader look at prior authorization generally, see our guide on prior authorization.

What to do if step therapy is holding up your prescription

• Ask your doctor whether you've already tried the required drug. If you have documented history of trying and failing a similar drug, this can speed up an exception request.
• Ask your doctor's office to submit the exception request promptly, including specific reasons tied to your medical history.
• Ask your pharmacist about the cash price as a bridge option while the exception is reviewed. BetterBuyRx's pharmacy price comparison tool can help you check nearby options.
• Track your plan's response deadlines. CMS oversees timeliness standards for related prior authorization and review processes in Medicare (CMS).
• Appeal a denial. If your exception request is denied, formal appeal rights are typically available. See our guide on what to do when insurance denies your medication.

Search your medication on BetterBuyRx to compare prices at nearby pharmacies while a step therapy exception is in review.

Is step therapy always a bad thing?

Not necessarily. In many cases, the required first-step drug genuinely works well and costs much less, so trying it first can save you money without sacrificing results. The frustration mostly comes up when a patient already knows, from past experience or a doctor's clinical judgment, that the required drug is not a good fit. That is exactly the situation the exception process exists to address. If you are new to a diagnosis and have not yet tried any treatment, discuss the pros and cons of starting with the plan's preferred option with your doctor or pharmacist, since only they can weigh what is medically appropriate for you.

Where cost comparison still helps

Regardless of where you land in the step therapy process, prices for the same drug can vary by pharmacy. Once a drug is approved for coverage, or if you decide to pay cash for a bridge supply, comparing prescription prices across pharmacies near you is a useful habit. It is also worth understanding how your plan's formulary tiers work, since the drug you end up on after step therapy will still be assigned a tier that affects your copay.

Compare prescription prices on BetterBuyRx while you work through a step therapy requirement with your doctor and plan.