INS-PHARMACY BENEFIT MANAGERS. Amends the Illinois Insurance Code. Provides that a pharmacy benefit manager may not reimburse a pharmacist or pharmacy for a prescription drug or pharmacy service in an amount less than the amount the pharmacy benefit manager reimburses itself or an affiliate for the same prescription drug or pharmacy service. Provides that the Section applies to insurers that provide coverage for prescription drugs and pharmacy services, including through a pharmacy benefit manager. Defines terms. Effective immediately.