Loretta Amankwah Kyei, J.D. Candidate – ASU Sandra Day O’Connor College of Law
In 2020, the U.S Supreme Court’s decision in Rutledge v. Pharmaceutical Care Management Association (PCMA) narrowed the scope of preemption under the Employee Retirement Income Security Act of 1974 (ERISA), opening the door for states to regulate pharmacy benefit managers (PBMs) contracting with employer health plans.[[1]]
In Rutledge, Arkansas’ Act 900 required PBMs to cover pharmacies’ actual costs for prescription drugs.[[2]] The Court ruled that state regulations affecting only the cost of benefits do not improperly interfere with ERISA plans, and are thus not preempted.[[3]] However, it cautioned that state laws dictating how benefit plans must be structured or managed—such as setting required benefits or coverage rules—are preempted by ERISA.[[4]]
Many saw Rutledge as a sign that states could take stronger action on PBMs.[[5]] When U.S. insurers began integrating prescription drug coverage into their plans in the 1960s, PBMs emerged to help set reimbursement rates, process claims, and pay pharmacies.[[6]] Initially created to lower costs, PBMs have since become dominant market players whose pricing and rebate practices often drive up drug costs and limit patient access to affordable medications.[[7]] These dynamics fuel state efforts to increase oversight of PBM operations and protect consumers.[[8]]
However, the Tenth Circuit’s Pharmaceutical Care Management Association v. Mulready decision on August 15, 2023, which struck down several provisions of Oklahoma’s PBM reform law as preempted by ERISA, reaffirmed that ERISA continues to limit how far states can go in regulating PBMs tied to employer-sponsored health plans.[[9]]
This setback comes at a time when PBM practices are facing increased scrutiny. In January 2025, the Federal Trade Commission (FTC) released its second interim staff report, Specialty Generic Drugs: A Growing Profit Center for Vertically Integrated PBMs, exposing the extent of PBM-driven market manipulation.[[10]] FTC’s report documented long-standing practices affecting millions of Americans, revealing that the three largest PBMs imposed markups of more than 100% on specialty generic drugs, including treatment for cancer, heart disease, and HIV.[[11]]
The Mulready Decision and its Consequences
While Rutledge appeared to allow broader state oversight of PBMs, the Tenth Circuit Court of Appeal’s decision in Mulready effectively closed the door. Oklahoma’s 2019 Patient’s Right to Pharmacy Choice Act aimed to monitor how PBMs contract with pharmacies and ensure patients could access their pharmacies of choice.[[12]] The Tenth Circuit obliterated several key provisions of Oklahoma’s Act under ERISA preemption. These included provisions:
- prohibiting PBMs from denying, limiting, or terminating a pharmacy’s contract based on the probation status of a licensed pharmacist employed by that provider;
- banning restrictions on person’s choice of in-network providers and use of financial incentives to encourage beneficiaries to use preferred pharmacies;
- requiring PBMs to maintain preferred pharmacies within a specified distance of a percentage of beneficiaries; and
- requiring PBMs to allow any qualified pharmacy to participate in a preferred network.
The court found that the provisions improperly affected how ERISA plans are managed by controlling the structure of their pharmacy networks.[[13]]
By contrast, the U.S. Court of Appeals for the Eighth Circuit reached an opposite conclusion in Pharmaceutical Care Management Association v. Wehbi.[[14]] Decided on November 17, 2021, the court held that North Dakota’s PBM regulations were not preempted by ERISA (while also finding that multiple provisions were preempted by federal Medicare laws).[[15]] North Dakota’s law sought to protect independent pharmacies from restrictive PBM practices by prohibiting fees on claims processing, allowing pharmacies to mail prescriptions to patients, and preventing PBMs from imposing accreditation standards that exceed state licensing requirements.[[16]]
Applying the Rutledge standard, the Eighth Circuit held that none of the challenged provisions had an impermissible “connection with” or “reference to” ERISA plans.[[17]] The court emphasized that the North Dakota laws regulated PBMs, third-party administrators, rather than ERISA plans directly, thus avoiding interference with plan administration or structure.[[18]] This interpretation, in line with Rutledge’s reasoning, clarifies that state PBM regulations addressing pricing and contracting practices generally fall outside ERISA’s preemptive scope.
Despite the Eighth Circuit’s divergent view in Wehbi, the Tenth Circuit’s Mulready decision had far-reaching effects. More than 30 states already enacted PBM reform statutes with provisions similar to those invalidated in Mulready.[[19]]
In June 2025, Iowa passed Senate File 383, a move likely shaped by Wehbi. Iowa’s law required that PBMs let patients choose any in-network pharmacies they prefer.[[20]] It also prohibited PBMs from paying independent pharmacies less than their own affiliated pharmacies for the same drug and required payments to match national averages.[[21]] PBMs must pay pharmacists a set fee for dispensing prescriptions, allow all pharmacies in a region to join their networks, and pass along all manufacturer rebates to health plan clients.[[22]]
Shortly after passage, the Iowa Association of Business and Industry sued to block its enforcement, arguing that several provisions were preempted by ERISA.[[23]] On July 21, 2025—one day before the law was set to take effect—a federal judge agreed, holding that the provisions banning payment discrimination and requiring fixed dispensing fees were preempted.[[24]] The United States District Court for the Southern District of Iowa Central Division issued an injunction, which has been appealed to the Eighth Circuit.[[25]]
The scope of the Iowa court’s ruling, however, was limited. The injunction applies only to the plaintiffs in the case and their members or contractors, leaving open the question of broader applicability. In October 2025, Wellmark Blue Cross Blue Shield, Iowa’s largest health insurer, filed a separate lawsuit against the Iowa Insurance Commissioner, arguing that the injunction should be extended to parties not involved in the original action.[[26]]
PBM Reform Efforts Beyond ERISA Plans
In 2025, states are advancing four major PBM reform strategies designed to sidestep ERISA challenges by: (1) delinking PBM compensation from drug prices, (2) requiring PBMs to pass drug rebates on to consumers, (3) imposing fiduciary duties to health carriers, and (4) prohibiting PBM ownership of pharmacies.
Delinking is the most comprehensive of these reforms. It mandates flat-fee compensation models rather than rebate-based payments. Colorado’s HB-1094, the first law of its kind, implements delinking measures and is set to take effect in 2027.[[27]]
Rebate pass-through laws, like Utah’s H.B. 257, require health insurers to ensure that PBMs either pass manufacturer rebates directly to consumers at the point of sale or use them to reduce premiums.[[28]] Utah H.B. 257 applied only to insured plans contracting with a PBM, not to self-insured plans, which would entail complexities.
Fiduciary duty provisions are also emerging as a new regulatory tool. These laws ensure PBMs act as fiduciaries to the health carriers they serve, aligning their financial interests with plan sponsors and patients. In 2024, Maine and Vermont enacted fiduciary duty requirements,[[29]–[30]] followed by North Carolina in 2025.[[31]]
Lastly, states are focusing on ownership restrictions to address PBM consolidation. Arkansas is the first state to prohibit PBMs from owning pharmacies, a provision removed from similar bills in Indiana and Louisiana.[[32]] However, Arkansas’s Act 624 faces challenges from four PBMs and PCMA, which alleged it violated the federal dormant Commerce Clause because it appears to overtly discriminate against the plaintiffs as out-of-state companies.[[33]]
Federal PBM Reform
On July 10, 2025, Representative Earl. L . “Buddy” Carter (R-GA) and 11 bipartisan cosponsors introduced the PBM Reform Act in Congress, a comprehensive legislative proposal aimed at curbing PBM practices that inflate drug prices and limit transparency to consumers.[[34]] Key provisions of the PBM Reform Act include:
- Ban on Spread Pricing in Medicaid: Prohibits PBMs from retaining the difference between what they charge Medicaid health plans and reimburse pharmacies.
- Medicare Part D Reforms: Delinks PBM compensation from drug costs and imposes new transparency requirements for PBM operations within Medicare Part D.
- Disclosure and Reporting: Requires PBMs to provide semi-annual reports to employers and patients detailing drug spending, rebates, and formulary decisions, in support of more informed decision-making.
- Enhanced Federal Oversight: Directs the Centers for Medicare and Medicaid Services (CMS) to define and enforce “reasonable and relevant” contract terms in Medicare Part D pharmacy contracts and strengthen enforcement against violations.[[35]]
If enacted, the PBM Reform Act would significantly shift regulatory authority from states to the federal government. While states have made significant strides in PBM reform, Congress seems poised to impose new PBM accountability requirements within ERISA’s framework (instead of around it).
PBM Reforms in 2025
Although Congress has failed to advance bipartisan PBM reform legislation to date, momentum has not stalled.[[36]] The PBM Reform Act reflects sustained bipartisan interest in increasing transparency and accountability. In light of continued ERISA preemption of state reform efforts, federal action may be the only path forward towards meaningful, uniform oversight of PBMs.
Given the opportunity the Supreme Court may be compelled to address the circuit split and resolve uncertainty it created in denying certiorari in Mulready in June 2025.[[37]] A definitive ruling could clarify the scope of state authority under ERISA in furtherance of state led PBM reforms. For now, judicial and federal developments must be closely monitored. Despite ongoing ambiguities, PBMs have begun to self-regulate in response to mounting scrutiny. On October 27, 2025, Cigna Group announced it will eliminate prescription drug rebates in its commercial health plans beginning in 2027, replacing them with upfront discounts at the pharmacy counter.[[38]] With bipartisan agreement on the need for greater scrutiny, PBM reforms appear poised to enter a new era of accountability.
Acknowledgement: Reviewed and edited in part by Joel L. Michaels, Adjunct Professor of Law, ASU Sandra Day O’Connor College of Law.
[1] Rutledge v. Pharm. Care Mgmt. Ass’n, 592 U.S. 80 (2020)
[2] 2015 Ark. Acts 900
[3] Rutledge v. Pharm. Care Mgmt. Ass’n, 592 U.S. 80 (2020)
[4] Id.
[5] In Major Victory for States, Supreme Court Clears the Way for State Health Reform, National Academy For State Health Policy (Dec. 15, 2020), https://nashp.org/ [https://perma.cc/7U23-QZN6].
[6] What are PBMs and what do they do?, American Medical Association (Aug. 7, 2025), https://www.ama-assn.org/ [https://perma.cc/H38T-JS77].
[7] Id.
[8] Id.
[9] Pharm. Care Mgmt. Ass’n v. Mulready, 78 F.4th 1183 (10th Cir. 2023)
[10] Fed. Trade Comm’n, Specialty Generic Drugs: A Growing Profit Center for Vertically Integrated Pharmacy Benefit Managers (2025), https://www.ftc.gov/system/files/ftc_gov/pdf/PBM-6b-Second-Interim-Staff-Report.pdf
[11] Id.
[12] Okla. Stat. tit. 36, § 6958
[13] Pharm. Care Mgmt. Ass’n v. Mulready, 78 F.4th 1183 (10th Cir. 2023)
[14] Pharm. Care Mgmt. Ass’n v. Wehbi, 18 F.4th 956 (8th Cir. 2021)
[15] Id.
[16] N.D. Cent. Code § 19-02.1-16.2
[17] Pharm. Care Mgmt. Ass’n v. Wehbi, 18 F.4th 956 (8th Cir. 2021)
[18] Id.
[19] 2025 State Legislation to Lower Prescription Drug Costs, National Academy For State Health Policy (Aug. 8, 2025), https://nashp.org/ [https://perma.cc/LN8Q-CFP9].
[20] 2025 Ia. SF 647
[21] Id.
[22] Id.
[23] Iowa Ass’n of Bus. & Indus. v. Ommen, No. 4:25cv211-SMR-WPK, 2025 LX 484328 (S.D. Iowa July 21, 2025)
[24] Id.
[25] Clark Kauffman, Wellmark sues to block enforcement of new law on pharmacy benefit managers, Iowa Capital Dispatch (Oct. 16, 2025), https://iowacapitaldispatch.com/2025/10/16/wellmark-sues-to-block-enforcement-of-new-law-on-pharmacy-benefit-managers/
[26] Id.
[27] 2025 Bill Text CO H.B. 1094
[28] 2025 Bill Text UT H.B. 257
[29] Me. Rev. Stat. tit. 24-A, § 4350
[30] Vt. Stat. Ann. tit. 18, § 9472
[31] 2025 Bill Text NC S.B. 479
[32] 2025 Bill Text AR H.B. 1150
[33] Express Scripts, Inc. v. Richmond, No. 4:25-CV-00520-BSM, 2025 LX 229886 (E.D. Ark. July 28, 2025)
[34] 2025 H.R. 4317; 119 H.R. 4317
[35] Id.
[36] Sophie Gardner & Kelly Hooper, Can Congress revive PBM reform?, Politico (Sep. 8, 2025) https://www.politico.com/newsletters/politico-pulse/2025/09/08/can-congress-revive-pbm-reform-00549936
[37] Lauren Clason, PBM State Fights Will Live On After High Court’s Petition Denial, Bloomberg Law (July 17, 2025) https://news.bloomberglaw.com/daily-labor-report/pbm-state-fights-will-live-on-after-high-courts-petition-denial
[38] Noah Tong, What Express Scripts’ drug rebate phase-out means for PBMs, Modern Healthcare (Oct. 29, 2025) https://www.modernhealthcare.com/insurance/mh-express-scripts-commercial-rebate-phase-out-pbms/?utm_id=gfta-ur-251029&share-code=EWRTS6MKTBCH7PTTQHTJFEPUIE&user_id=5641123&customer_secondary_source=aac_articleGifting
