What is Step Therapy?
Step therapy (also called 'fail-first' requirements) is a cost management tool used by Medicare Part D plans. It requires you to try one or more lower-cost drugs (usually generics) before the plan will cover a more expensive drug for the same condition. The idea is that many patients respond well to lower-cost options, and step therapy ensures those are tried first.
Step therapy is different from prior authorization. PA requires approval before coverage. Step therapy requires you to try specific drugs first before the plan will cover your prescribed drug.
How Step Therapy Works
A typical step therapy sequence might look like:
- Step 1: Try a Tier 1 generic (e.g., generic metformin for diabetes)
- Step 2: If Step 1 fails, try a Tier 2 generic or preferred brand
- Step 3: If Steps 1 and 2 fail, the plan will cover the originally prescribed drug
You may need to document that you tried and failed the step therapy drugs before the plan will cover your prescribed medication. Keep records of any adverse reactions or lack of effectiveness.
Requesting a Step Therapy Exception
You can request an exception to step therapy requirements if:
- You already tried the required drugs and they didn't work or caused adverse effects
- The required drugs are contraindicated for your condition
- Your doctor believes the required drugs would be harmful
- You were previously stable on the prescribed drug (continuity of care)
If you're switching to Medicare from employer coverage and were already taking a drug subject to step therapy, document your prior use. Many plans grant exceptions for continuity of care.