Our Take
Pharmacy benefit managers are burning political capital on litigation instead of building a defensible business case for their model.
Why it matters
Tennessee's FAIR Rx Act represents the first state-level structural attack on PBM vertical integration. If the law survives court challenges, other states will follow, forcing PBMs to choose: divest pharmacy operations or exit markets entirely.
Do this week
PBM counsel: map exposure across your state footprint before Q1 2025 so your board can model revenue impact under forced divestment scenarios.
Express Scripts and the PBM lobby sue to overturn Tennessee's structural separation law
Express Scripts and the Pharmaceutical Care Management Association (PCMA) filed lawsuits challenging Tennessee's FAIR Rx Act, which prohibits pharmacy benefit managers from owning or controlling pharmacies. The law passed earlier this year despite industry opposition.
This mirrors CVS Caremark's litigation strategy. CVS, which owns both pharmacy benefit management operations and Aetna health insurance, has already filed separate legal challenges to the same Tennessee statute.
The FAIR Rx Act requires PBMs to structurally separate from pharmacy operations. It represents the first state legislation to mandate this kind of vertical disintegration in the pharmacy supply chain.
Structural separation breaks the PBM business model at its foundation
The PBM model depends on owning multiple layers of the transaction: negotiating drug prices with manufacturers, operating mail-order pharmacies, and directing patient volume to owned locations. Separation removes the financial incentives that have allowed PBMs to extract margin at each step.
Tennessee's law is not a rebate cap or transparency mandate. It is a forced divestment. If upheld, it sets a template. California, Minnesota, and other states have already introduced similar bills. The litigation is really about whether PBMs can survive as pure intermediaries, or whether their current scale depends on vertical control.
The industry's legal argument rests on constitutional commerce-clause and takings grounds. But the political argument has collapsed: Tennessee passed the law with bipartisan support and explicit backing from independent pharmacy and patient advocacy groups. Courts rarely overturn legislation with that coalition behind it.
Assume the law survives and plan accordingly
PBM executives should model a scenario in which Express Scripts, Caremark, and Anthem must divest or exit Tennessee within 18 to 36 months. This means: identifying which pharmacy assets are sellable, calculating the revenue loss from stripped-down operations, and stress-testing cash flow under forced divestitures. Litigation is a delay tactic, not a defense strategy.
For pharmacy operators and independent PBM consultants, separation is an opportunity. If the law holds, incumbent PBMs lose their vertical leverage. Independent pharmacies and smaller PBMs can compete on price and service without fighting an integrated competitor's margin extraction.