How could a bill affect CVS pharmacy PBM?

Tennessee proposal would force CVS to separate PBM business

A proposal in Tennessee’s legislature would require CVS Health to make a choice about its two linked roles in the prescription system: running pharmacy stores and overseeing a pharmacy benefit manager (PBM) function. The measure is emerging as a potential model for state action that targets how large pharmacy companies structure their business.

If enacted, the bill would put CVS in a position where it may have to separate its store operations from its PBM activity—or potentially exit the state entirely if it cannot comply with the required separation. That matters because PBMs play a central role in how prescription drug claims are processed and how formularies, pricing terms, and rebates are negotiated.

The practical effect could be a shift in incentives across the supply chain. Separation requirements typically aim to reduce conflicts of interest in billing and drug contracting that can influence what drugs patients ultimately get and at what cost.

For patients and employers, the key question is whether the change leads to clearer pricing and fewer surprise costs—or whether it introduces friction that slows how prescriptions are administered. For insurers and pharmacy customers, it also raises uncertainty around network contracting and administrative complexity.

In the near term, consumers are likely to see uncertainty rather than immediate changes at the pharmacy counter. But the bill underscores a broader trend: states are increasingly willing to use legislation to reshape PBM practices, including by restricting how vertically integrated companies can operate.

Why it matters

Any structural rule affecting PBMs can ripple into drug affordability, how quickly claims are adjudicated, and the balance of negotiating power among employers, insurers, pharmacies, and drugmakers.