Short answer: Step therapy requires you to try a lower-cost drug first and show it didn’t work (or isn’t appropriate) before the plan will cover a more expensive alternative. It’s a utilization-management tool, and your prescriber can request an exception when stepping through isn’t medically appropriate.
Step therapy, sometimes called “fail first,” is a cost- and appropriateness-control tool. The plan asks you to begin with a preferred, usually lower-cost drug; only if it fails or causes problems will the plan move you up to the costlier option.
The criticism is that it can delay effective treatment. To address that, plans must offer an exception process: if your prescriber documents that the required first-step drug is ineffective, harmful, or otherwise inappropriate for you, the plan can waive the step. Many states (and Medicare Advantage rules) now require timely turnaround on these requests.
Sources
- Employee Benefits KB (Coverage Mechanics, utilization management).
Content history
Originally published: June 16, 2026
Last reviewed: June 16, 2026