Step Therapy: The Fail-First Requirement
Step therapy, sometimes called "fail-first" therapy, is a utilization management technique used by Medicare Advantage and Part D prescription drug plans to control costs. Under a step therapy requirement, the plan requires you to try one or more less expensive drugs in a therapeutic category before it will approve coverage of the drug your physician originally prescribed. The idea is that you must "step through" lower-cost alternatives before the plan will cover the higher-cost option.
A common example: your doctor prescribes a brand-name diabetes medication for a specific clinical reason. The plan's step therapy requirement says you must first try a generic diabetes medication (or several alternatives) and demonstrate that they are inadequate for your condition before the plan will cover the brand-name drug. If the generic works adequately, coverage of the brand is not approved. If it fails (inadequate efficacy or unacceptable side effects), you have met the step therapy requirement and can move to the next drug.
Who Uses Step Therapy?
Step therapy requirements appear on Medicare Advantage plans' drug formularies and on standalone Part D plans. They are most commonly applied to:
- Brand-name drugs when generic equivalents exist in the same therapeutic class
- Higher-tier specialty drugs when lower-tier alternatives are available
- Drugs where clinical guidelines acknowledge multiple effective treatment options at different cost levels
- Medications for conditions with a range of available therapies (diabetes, hypertension, depression, rheumatoid arthritis, COPD)
Original Medicare Parts A and B do not use step therapy. If a physician orders a covered service under Original Medicare, it is covered based on medical necessity, not based on whether you tried cheaper alternatives first. Step therapy is a feature of private insurance administration in Medicare Advantage and Part D.
How to Request a Step Therapy Exception
CMS rules require Medicare Advantage plans to have an exception process for step therapy. You do not have to try an alternative drug that is contraindicated for your condition, that you have already tried and failed, or that is inappropriate given your history. To request an exception:
- Your prescribing physician must submit the exception request. The request must include a written statement explaining the clinical rationale for why the required step therapy drug is not appropriate for you, and why the originally prescribed drug is medically necessary. Documentation of prior treatment failure, allergies, contraindications, or other clinical factors must be included.
- The plan must respond within 72 hours for standard requests and 24 hours for expedited (urgent) requests. Urgent requests apply when standard timing would seriously jeopardize your health.
- If the exception is approved, the plan covers the originally prescribed drug under the plan's normal cost-sharing rules (or the plan may apply specific cost-sharing terms to the exception).
- If denied, you can appeal. First-level appeals go to the plan. Second-level appeals go to an Independent Review Entity. You can escalate further to an ALJ hearing if the amount at issue meets the threshold.
What Documentation Strengthens an Exception Request
- Medical records documenting prior use of the required step drug and the adverse outcome (treatment failure, side effects, allergic reaction)
- Lab results or clinical notes showing why the required drug is contraindicated for your specific condition
- A detailed letter from your physician explaining the clinical reasoning for the original prescription
- Published clinical guidelines or studies supporting the originally prescribed drug for your specific condition or profile
- Documentation of comorbidities that make step therapy alternatives inappropriate
Choosing Plans With Fewer Step Therapy Burdens
Before enrolling in a Medicare Advantage or Part D plan, it is worth reviewing whether your current medications are subject to step therapy requirements under the plan you are considering. Plan formularies are publicly available, and formulary search tools at Medicare.gov allow you to look up any drug and see what restrictions apply, including step therapy, prior authorization, and quantity limits.
If a medication you take is subject to step therapy on the plan you are considering, ask your agent whether an exception would likely be approved based on your history, or whether a different plan covers the drug without step therapy requirements. This comparison can affect both your access to your medications and your annual drug costs significantly.
Call Insurance Innovators LLC at (530) 395-5309 for help comparing plan formularies and navigating step therapy exception requests for your specific medications.