Pharmacy benefit management companies, the third-party administrators for prescription drug programs, have seen a boom in business. NPR reports they are "now poised for even more growth, as baby boomers age and Congress prepares to insure more Americans. ..." "The PBM industry emerged when health plans started covering prescriptions. Big insurers found negotiating with pharmaceutical companies to be a hassle, so PBMs began cropping up, offering to take that task off of their hands. Today, PBMs cover more than 200 million Americans... 
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