1. List of drugs shown in therapeutic or disease categories. 2. In some insurance plans, managed care plans, or Medicare Part D plans, providers are limited to prescribing medications to members from a list of drugs and dispensed through pharmacies participating in the plan. Most plans’ formularies include the most common drugs prescribed for seniors. Also called drug formulary, preferred-drug list (PDL) , or select drug list .
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–A list of drugs that are covered by a particular insurance plan. Formularies often contain different tiers of coverage between which levels of coverage and out-of-pocket expenses can vary considerably.

List of prescribed medications recommended by a managed care plan and dispensed by participating pharmacies to members (enrollees) of the plan. It is periodically reviewed and modified. See the three types—open, closed, and restricted formularies—for information. See formulary and drug formulary .