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|Articles|March 1, 2005

Health plans' creative models help four-tier formularies gain acceptance

JUST A FEW YEARS AGO, a three-tier formulary was a novelty; now more and more health plans and employers have introduced the design into their pharmacy benefits. The growth in the number of workers covered under a three-tier design has grown from 27% to 63% between 2000 and 2003.

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