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💊 '''Preferred drug''' is a medication that a [[Definition:Health insurance | health insurance]] plan or [[Definition:Pharmacy benefit manager (PBM) | pharmacy benefit manager]] has placed on a favorable tier within its [[Definition:Formulary | formulary]], meaning policyholders pay lower [[Definition:Copayment | copayments]] or [[Definition:Coinsurance | coinsurance]] when filling prescriptions for that drug compared to non-preferred alternatives. The designation reflects negotiations between insurers or PBMs and pharmaceutical manufacturers, where [[Definition:Rebate | rebates]], volume discounts, or other pricing concessions earn a drug its preferred status. In markets like the United States, where employer-sponsored and individual health plans rely heavily on tiered formularies, the preferred drug classification directly shapes both member out-of-pocket costs and insurer pharmacy spend.

⚙️ The process begins when a PBM or health plan's pharmacy and therapeutics committee evaluates drugs within a therapeutic class — a group of medications that treat the same condition. Drugs deemed clinically effective and cost-efficient, often because the manufacturer has agreed to favorable pricing terms, earn preferred placement. When an insured member presents a prescription, the pharmacy system checks the [[Definition:Formulary | formulary]] tier in real time: a preferred drug triggers a lower cost-share, while a non-preferred equivalent may require the member to pay substantially more or seek [[Definition:Prior authorization | prior authorization]]. Some plans implement step therapy protocols, requiring patients to try a preferred drug before the insurer will cover a costlier alternative. The financial mechanics matter enormously at scale — shifting even a small percentage of prescriptions from non-preferred to preferred status can save a health plan millions in annual [[Definition:Claims cost | claims costs]].

📊 Preferred drug designations sit at the intersection of clinical care and insurance economics, making them one of the most scrutinized features of modern [[Definition:Managed care | managed care]]. For insurers, maintaining a well-structured formulary with clear preferred tiers is essential to controlling the [[Definition:Medical loss ratio (MLR) | medical loss ratio]] on pharmacy benefits, which in many jurisdictions represents a growing share of total health plan expenditure. For policyholders, understanding which drugs carry preferred status can mean the difference between affordable and prohibitively expensive treatment. Regulators in the U.S. — particularly through [[Definition:Centers for Medicare and Medicaid Services (CMS) | CMS]] oversight of [[Definition:Medicare Advantage | Medicare Advantage]] and [[Definition:Prescription drug plan (PDP) | Part D plans]] — impose rules on formulary adequacy to ensure that preferred drug lists do not unreasonably restrict access to medically necessary therapies.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Formulary]]
* [[Definition:Pharmacy benefit manager (PBM)]]
* [[Definition:Prior authorization]]
* [[Definition:Copayment]]
* [[Definition:Prescription drug plan (PDP)]]
* [[Definition:Managed care]]
{{Div col end}}

Definition:Preferred drug - Revision history

PlumBot: Bot: Creating new article from JSON