Synopsis As Introduced Amends the Illinois Insurance Code. Provides that if a generic equivalent for a brand name drug is approved by the federal Food and Drug Administration, plans that provide coverage for prescription drugs through the use of a drug formulary that are amended, delivered, issued, or renewed in the State on or after January 1, 2022 shall comply with specified requirements. Provides that the Department of Insurance may adopt rules to implement provisions concerning notice of change of drug formulary. In provisions concerning a contract between a health insurer and a pharmacy benefit manager, provides that a pharmacy benefit manager must update and publish maximum allowable cost pricing information according to specified requirements, must provide a reasonable administrative appeal procedure to allow pharmacies to challenge maximum allowable costs, and must comply with specified requirements if an appeal is denied. Sets forth provisions concerning pharmacy benefit manager contracts; specified requirements that a pharmacy benefit manager shall comply with; and specified requirements that an auditing entity shall comply with when conducting a pharmacy audit. Provides that a violation of specified provisions is an unfair method of competition and unfair and deceptive act or practice in the business of insurance. Sets forth provisions concerning applicability of the Pharmacy Benefit Managers Article of the Illinois Insurance Code, and provisions concerning fiduciary responsibility of a pharmacy benefit manager. Defines terms. Makes other changes. Amends the Illinois Public Aid Code. Sets forth provisions concerning reimbursement of professional dispensing fees and acquisition costs for pharmacy providers.