Cautionary tale: Plan sponsors losing manufacturer rebate dollars to PBMs through rebate aggregators

Pharmacy benefit managers (PBMs) have created opaque manufacturer rebate arrangements, either directly or through wholly owned subsidiaries. These subsidiaries, known as “rebate aggregators,” cost plan sponsors, beneficiaries and taxpayers staggering sums of money. A growing number of examples of PBMs causing economic harm to plan sponsors through rebate aggregators is publicly emerging.

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