MI HB4351

Adds definition of "pharmacy benefit manager" to 1984 PA 218, specifying entities that contract with pharmacies to provide pharmacy health services including drug benefit administration, claims processing, formulary creation, prior authorization, rebate administration, and pharmacy network establishment.

Prohibits carriers and pharmacy benefit managers from excluding 340B Program entities or contracted pharmacies from provider networks or paying them differently than similarly situated pharmacies, and restricts requiring 340B drug modifiers on claims except for Medicaid program payment purposes.

Prevents pharmacy benefit managers from excluding or discriminating against pharmacies solely because the carrier lacks financial interest in the pharmacy.

Requires contracts between carriers/pharmacy benefit managers and pharmacies to permit pharmacies to disclose current selling prices of drugs in accordance with public health code section 17757.

Establishes annual statement filing requirements for third party administrators by July 1 each year, with director authority to grant extensions up to 30 days, and maintains existing enforcement provisions including civil fines up to $10,000 and license suspension or revocation for violations.