Amends the Illinois Insurance Code. Creates the Pharmacy Benefit Managers Article. Provides that upon request by a party contracting with a pharmacy benefit manager, a pharmacy benefit manager shall disclose any rebate amounts provided to the pharmacy benefit manager by a pharmaceutical manufacturer. Provides that upon request by a party contracting with a pharmacy benefit manager, a pharmacy benefit manager shall disclose the actual amounts paid by the pharmacy benefit manager to the pharmacy. Provides that a pharmacy benefit manager shall provide notice to the party contracting with the pharmacy benefit manager of any consideration that the pharmacy benefit manager receives from the manufacturer for dispense as written prescriptions once a generic or biologically similar product becomes available. Provides that any provision of a contract entered into, amended, or renewed on or after the effective date of the amendatory Act that is contrary is unenforceable.