Most employers have little idea what the pharmacy benefit managers they hire do with the money they exchange for the medications used by their employees, according to a KFF survey released Wednesday morning. In KFF's latest employer health benefits survey, company officials were asked how much of the rebates collected from drugmakers by pharmacy benefit managers, or PBMs, is returned to them. In recent years, the pharmaceutical industry has tried to deflect criticism of high drug prices by saying much of that income is siphoned off by the PBMs, companies that manage patients' drug benefits on behalf of employers and health plans.
PBM leaders say they save companies and patients billions of dollars annually by obtaining rebates from drugmakers that they pass along to employers. Drugmakers, meanwhile, say they raise their list prices so high in order to afford the rebates that PBMs demand in exchange for placing the drugs on formularies that make them available to patients. Leaders of the three largest PBMs — CVS Caremark, Optum RX and Express Scripts — all testified in Congress in July that 95% to 98% of the rebates they collect from drugmakers flow to employers.
For KFF's survey of 2,142 randomly selected companies, officials from those with 500 or more employees were asked how much of the rebates negotiated by PBMs returned to the company as savings. About 19% said they received most of the rebates, 27% said some, and 16% said little. Thirty-seven percent of the responde.