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Glossary

Formulary exception

Commercial and employer plans · 1 documents cited · Read September 2026

Denise Ramirez, Coverage Editor · Who writes this

In one sentence

A request to cover a drug the plan does not list at all. For a plan providing essential health benefits the standard answer is due within 72 hours, and an expedited one within 24.

Also written as Non-formulary exception, Request for exception.

What formulary exception actually means

Prior authorization and a formulary exception answer two different questions. Prior authorization asks whether you qualify for a drug the plan covers. An exception asks the plan to cover a drug it does not.

For plans that provide essential health benefits the process has published clocks on it, and they are short. There is a standard track and an expedited track, the expedited one turning on circumstances the rule defines rather than on how urgent it feels. Both end in a decision the plan has to communicate to you and to the prescriber.

One detail is easy to miss and worth having: an exception that is granted is not a one-month reprieve. The rule ties the grant to the prescription rather than to a calendar, and where the grant rests on exigent circumstances it lasts as long as those do.

The text it comes from

This is the wording the definition rests on. Where it decides anything for you, read the section rather than our summary of it.

The standard clock is 72 hours. A health plan "must make its determination on a standard exception and notify the enrollee or the enrollee's designee and the prescribing physician (or other prescriber, as appropriate) of its coverage determination no later than 72 hours following receipt of the request," and a plan that grants one "must provide coverage of the non-formulary drug for the duration of the prescription, including refills."

45 CFR §156.122(c)(1), Electronic Code of Federal Regulations, effective August 2026 · source

The expedited clock is 24 hours, and the rule defines when it applies rather than leaving it to judgment: "Exigent circumstances exist when an enrollee is suffering from a health condition that may seriously jeopardize the enrollee's life, health, or ability to regain maximum function or when an enrollee is undergoing a current course of treatment using a non-formulary drug." A plan granting on that basis "must provide coverage of the non-formulary drug for the duration of the exigency."

45 CFR §156.122(c)(2), Electronic Code of Federal Regulations, effective August 2026 · source

Where this comes from

  1. 45 CFR §156.122(c)(1), Electronic Code of Federal Regulations, effective August 2026 — www.ecfr.gov/current/title-45/part-156/section-156.122

Where this comes up

American GLP is not a law firm, an insurer, a government office or a clinician, and nothing here is legal or medical advice. This page says what a published rule means by a word. Which rulebook governs you depends on your plan, and your own notice and plan documents govern your case.