110 ILCS 330/5
The University may establish and collect charges for hospital services rendered in the University of Illinois Hospital or in connection with a University health care program. However, with respect to health care professional services rendered in connection with a University health care program at the University of Illinois Hospital or elsewhere by the Doctors of Medicine, the Doctors of Dentistry, or other health care professionals who are members of the University faculty, charges for such professional services shall not be established or collected by the University or the University of Illinois Hospital but may be by said members of said faculty who render such services under a plan or plans organized and administered by them. All such charges shall be deposited in a special fund or funds in the treasury of the University. The billing, collecting and disbursing of any such fund shall remain exclusively under the supervision and control of such faculty under a plan or plans established by them for the general benefit and support of University programs and activities related to the health professions, provided no charges may be made or collected until such plan has been approved by the University. However, no person shall make or collect a personal or professional charge for his own account for treating, caring for or nursing a patient in the University of Illinois Hospital (other than health care professional services provided at the University of Illinois Hospital by non-salaried adjunct University faculty who are licensed dentists or physicians licensed to practice medicine in all its branches members) or in connection with a University health care program. Nothing herein shall prevent the University from approving a plan under which any such fund in the University treasury may be utilized in paying the University salaries of such faculty members, or from assisting in the billing and collection of professional charges if all University costs in connection therewith are paid from the charges so collected.
110 ILCS 330/5