Supporters say it can help the members free themselves from state requirements that drive up the costs, while opponents argue that the arrangements will weaken the fully insured market, by luring away the healthiest individuals and groups.
The requirement is part of the state's new pharmacy benefit manager market conduct standards, aimed at enhancing transparency and boosting competition.
The post of administrator of the Centers for Medicare and Medicaid Services would give Mehmet Oz a central role in regulating commercial group health insurance.
A cap would hurt sicker and older indidividuals and hit some regions harder than others, according to a benefits professional-employer coalition organized by Neil Trautwein.
Between 2011 and 2022, the number of issuers fell some in the large-employer market and more in the small-employer market, according to the Government Accountability Office.