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My drug was denied as a formulary exclusion. How do I get an exception?

You or your prescriber ask the plan for a formulary exception: a written request stating that the covered alternatives would be less effective for you or would cause harm, backed by your prescriber's statement. Marketplace and most employer plans must decide a standard exception request within 72 hours and an urgent one within 24 hours, and Medicare Part D has its own exception rule.

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

    Confirm it is a formulary problem, not a prior-auth problem

    The letter will say 'non-formulary', 'not covered', 'excluded' or 'plan exclusion'. A prior-authorization or step-therapy denial is a different request.

  2. Step 2

    Get the prescriber's statement

    For Part D, 42 CFR 423.578(b) requires a prescribing physician's or other prescriber's supporting statement that the formulary alternatives would not be as effective or would have adverse effects. Commercial plans ask for the same substance.

  3. Step 3

    Submit the exception request in writing

    Use the plan's exception form if it has one, attach the statement and the records of alternatives tried. Ask for expedited handling if waiting would seriously jeopardise your health.

  4. Step 4

    If denied, appeal, then external review

    A denied exception is an adverse benefit determination with full appeal rights. For marketplace plans, 45 CFR 156.122(c) provides an external exception review by an independent organisation within 72 hours (24 hours expedited).

The deadline that applies

Marketplace and other plans using the essential-health-benefits drug rule must decide a standard exception request within 72 hours and an expedited one within 24 hours of receipt (45 CFR 156.122(c)). Part D plans decide a coverage determination within 72 hours standard, 24 hours expedited (42 CFR 423.568). The appeal after a denied exception follows the plan's normal clock; the letter states it.

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Documents to gather

  • The denial letter naming the exclusion
  • The prescriber's supporting statement
  • Records of each covered alternative tried, or why each is contraindicated
  • The plan's formulary page for the drug, if you can find it

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Related questions

What if the plan says the drug is a 'plan exclusion' for weight loss?

A benefit exclusion (the plan does not cover a category at all) is harder than a formulary exclusion, because the appeal must show the drug is prescribed for a covered indication or that the exclusion does not apply as written. Read the plan document's exclusion language exactly; the wording decides the argument.

Can my pharmacist file the exception?

Usually the request must come from you or your prescriber, but pharmacists often start it. The prescriber's statement is what the plan evaluates.

How long does an approved exception last?

Part D approvals generally run through the end of the plan year (42 CFR 423.578(c)(3)); commercial plans set their own term, often 12 months. Ask, and calendar the renewal.

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