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Step therapy denied my drug. Can I appeal?

Yes. A step-therapy denial means the plan wants you to try a preferred drug first, and every plan must have an exception process for when you already tried it, it is contraindicated, or it is expected not to work; many states also cap step therapy by law. The appeal is a documented exception request, not an argument about the drug's merits.

Last reviewed Sep 11, 2026 · General information, not legal or medical advice · Apellica is not a law firm

What to do, in order

  1. Step 1

    Identify the required 'step' drug

    The letter names the preferred drug or class you were expected to try. Check whether you have already tried it, under this plan or a previous one.

  2. Step 2

    Document why the step does not apply

    Prior trial and failure, an adverse reaction, a contraindication, or a clinical reason it is expected to be ineffective. Dates and records matter more than adjectives.

  3. Step 3

    File a step-therapy exception with the prescriber's statement

    For Part D, 42 CFR 423.578(b) covers exceptions to step-therapy requirements with a prescriber's supporting statement. Commercial plans have an equivalent process; ask for the form.

  4. Step 4

    Cite your state's step-therapy law if you have one

    Many states require plans to grant an exception in defined circumstances and to answer within a set number of days. Your state page on Apellica lists the regulator to ask.

The deadline that applies

A step-therapy exception request is decided on the plan's coverage-determination clock (Part D: 72 hours standard, 24 hours expedited). A denied exception carries full appeal rights: at least 180 days to file on employer and ACA plans, then external review (45 CFR 147.136).

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Documents to gather

  • The denial letter naming the step requirement
  • Pharmacy history showing the preferred drug was filled, or records showing why it cannot be
  • The prescriber's statement
  • Any prior plan's approval of the drug

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Related questions

I tried the preferred drug on a different insurance. Does that count?

Usually yes, if you can document it. Pharmacy claims history, a previous plan's approval letter, or the prescriber's notes all work.

Does step therapy apply to Medicare Advantage?

MA plans may apply step therapy to Part B drugs under 42 CFR 422.136, with exception and appeal rights; Part D drugs follow the Part D exception rule.

Can I keep taking the drug while I appeal?

Ask for a transition or continuity supply. Part D plans must provide a temporary supply in defined situations; some states require continuity of care during an appeal.

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