215 ILCS 5/512-3
For the purposes of this Article, unless the context otherwise requires, the terms defined in this Article have the meanings ascribed to them herein:
"Health care payer" means an insurance company, health maintenance organization, limited health service organization, health services plan corporation, or dental service plan corporation authorized to do business in this State.
"Third party prescription program" or "program" means any system of providing for the reimbursement of pharmaceutical services and prescription drug products offered or operated in this State under a contractual arrangement or agreement between a provider of such services and another party who is not the consumer of those services and products. Such programs may include, but need not be limited to, employee benefit plans whereby a consumer receives prescription drugs or other pharmaceutical services and those services are paid for by an agent of the employer or others.
"Third party program administrator" or "administrator" means any person, partnership or corporation who issues or causes to be issued any payment or reimbursement to a provider for services rendered pursuant to a third party prescription program, but does not include the Director of Healthcare and Family Services or any agent authorized by the Director to reimburse a provider of services rendered pursuant to a program of which the Department of Healthcare and Family Services is the third party.
215 ILCS 5/512-3