Tiered formularies are a type of prescription drug plan structure that categorizes medications into different levels or 'tiers', each with varying costs to the patient. The tier system encourages the use of lower-cost medications by assigning higher out-of-pocket expenses for higher-tier drugs, which often include brand-name or specialty medications. This strategy is designed to promote cost containment in healthcare by steering patients toward more affordable options while still providing access to necessary treatments.
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