Amends the Illinois Insurance Code. Provides that a contract between a pharmacy benefit manager or third-party payer and a covered entity under Section 340B of the federal Public Health Service Act shall not contain specified provisions. Provides that a violation by a pharmacy benefit manager constitutes an unfair or deceptive act or practice in the business of insurance, and that a provision that violates the prohibition on certain provisions in a contract between a pharmacy benefit manager or a third-party payer and a 340B covered entity that is entered into, amended, or renewed after July 1, 2022 shall be void and unenforceable. Defines terms. Amends the Illinois Public Aid Code. In provisions concerning pharmacy payments, provides that no later than January 1, 2023, the Department of Healthcare and Family Services shall implement a mechanism for entities participating in the federal drug pricing program and their contracted pharmacies to submit quarterly retrospective utilization files containing the minimum fields necessary to accurately identify the drugs to the Department or its contractor for processing Medicaid drug rebate requests to Medicaid beneficiaries or Medicaid managed care organization enrollees. Provides that the Department or its contractor shall use the utilization files to remove 340B claims from the Department’s Medicaid drug rebate requests and that the Department shall not require the entities or their contracted pharmacies to use any other method or billing code to identify 340B drugs billed to Medicaid or Medicaid managed care organizations. In provisions concerning pharmacy benefits, provides that a Medicaid managed care organization or pharmacy benefit manager administering or managing benefits on behalf of a Medicaid managed organization shall not include specified provisions in a contract with a covered entity or with any pharmacy owned by or contracted with the covered entity. Provides that a violation by a Medicaid managed care organization or its pharmacy benefit manager constitutes an unfair or deceptive act or practice in the business of insurance, and that a provision that violates the prohibition on certain provisions in a contract between a Medicaid managed care organization or its pharmacy benefit manager and a 340B covered entity entered into, amended, or renewed after July 1, 2022 shall be void and unenforceable. Effective July 1, 2022.