Step therapy: how to get an exception when the required drug is wrong for you
Step therapy forces patients through cheaper drugs first. Federal and state law require an exceptions process — here is how to invoke it and what evidence wins.
What step therapy is
Step therapy (or fail-first) requires a patient to try one or more preferred drugs before the plan will cover the prescribed drug. It is a cost-control tool, not a clinical guideline.
Plans subject to ERISA, the ACA, and Medicare Part D must offer an exceptions process when the required step is medically inappropriate.
Grounds for an exception
Allergic reaction or contraindication to the required drug.
Documented prior failure of the required drug or a drug in the same class.
Expected adverse interaction with another medication the patient must take.
Stable on the prescribed drug already and a switch would likely cause harm.
The required drug is not in the same therapeutic class or is not expected to be effective.
Medicare Part D rules
Part D plans must decide standard formulary exception requests within 72 hours and expedited requests within 24 hours of receiving the prescriber's supporting statement.
Source: CMS Medicare Prescription Drug Benefit Manual, Chapter 18. See https://www.cms.gov/medicare/appeals-grievances.
How to file
Get the plan's coverage exception or formulary exception form (most publish it online).
Have the prescriber submit a supporting statement that names the contraindication, prior failure, or interaction with specifics from the chart.
If denied, appeal the denial under the plan's standard appeal track. Many state laws (now in a majority of states) layer additional step-therapy override rights on top of the federal floor.
Upload the denial letter. Free analysis first, finished letter second.
FAQ
What if I tried the required drug at a previous insurer?+
Submit the prior pharmacy records or a clinician note documenting the trial and outcome. Plans generally must accept evidence of prior failure regardless of which insurer covered it.
Is there a deadline for the plan to respond?+
Medicare Part D: 72 hours standard, 24 hours expedited. Commercial plans vary by state law; the federal floor for urgent care is 72 hours.
More guides
- How to write a health insurance appeal letter
- Internal appeal vs external review: what is the difference
- Expedited appeals: when to ask for an urgent review
- The No Surprises Act and out-of-network bills