DOL Final Rule Requires PBM Fee Disclosure to Large Self-Insured Plans
A new federal rule obliges pharmacy benefit managers to disclose fees to large self-insured health plans, adding a compliance layer in a contested area for employer benefits counsel, PBMs and plan intermediaries.
The U.S. Department of Labor has issued a final rule requiring pharmacy benefit managers to disclose fees to large self-insured health plans, according to a Mayer Brown client alert published 2 November 2026. The development lands in an already crowded PBM transparency landscape that has drawn state legislative attention, congressional proposals and federal agency scrutiny, so sponsors and intermediaries are absorbing a new federal disclosure regime on top of existing state and contractual obligations.
Why sophisticated counsel should care: self-insured plans covering large workforces sit at the front line of PBM fee pass-through disputes, and a federal disclosure mandate is likely to reshape what administrative-services contracts, disclosure schedules, audit rights and vendor-negotiation data must contain. Large employers should expect fresh PBM fee data requests routed through their own intermediaries, while PBMs face standardized disclosure duties that could surface in litigation, regulatory inquiries or negotiations with clients.
What to watch: the rule's effective and compliance dates, the definition of "large" plans and of disclosable fees, permitted audit and contractual flow-down mechanics, and any pre-emption or ERISA obstacles. One caveat: the source available for this briefing is limited to a headline and description, so the operative text, docket details and dates are unverified here and should be confirmed against the Federal Register notice before client guidance is issued.