The Standard Drug Benefit
The standard benefit is defined in terms of the benefit structure, not the particular drugs
that must be covered. For 2021, the standard benefit includes an initial $445 deductible.
After meeting the deductible the beneficiaries pay 25% of the cost of covered Part D
prescription drugs, up to an initial coverage limit of $4,130 in 2021. Once the initial
coverage limit is reached, beneficiaries are subject to another deductible, known as the
"Donut Hole," or "Coverage Gap," in which they must pay the full costs of drugs. When
the total out-of-pocket expenses on formulary drugs reach $6,550 for 2021 - including the
costs of the deductible and coinsurance - beneficiaries reach the "Catastrophic
Coverage " benefit. Beneficiaries entitled to Catastrophic Coverage pay $3.60 for a
generic or preferred drug and $8.95 for other drugs, or a flat 5% coinsurance, whichever
is greater. This out-of-pocket amount is calculated annually. Beneficiaries who reach the
$6,550 out-of-pocket threshold in one year have to begin to meet it again on January 1st
of the next year.
Because the deductible, initial coverage limit, and annual out-of-pocket threshold change
each year according to the changes in expenditures for Part D drugs, beneficiary out-of
pocket expenses may increase annually.
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