215 ILCS 134/60

(a) A health care plan may also offer other arrangements under which enrollees may access health care services from contracted providers without a referral or authorization from their primary care physician. (b) The enrollee may be required by the health care plan to select a specialist physician or other health care provider who has a referral arrangement with the enrollee's primary care physician or to select a new primary care physician who has a referral arrangement with the specialist physician or other health care provider chosen by the enrollee. If a health care plan requires an enrollee to select a new physician under this subsection, the health care plan must provide the enrollee with both options provided in this subsection. (c) The Director of Insurance and the Department of Public Health each may promulgate rules to ensure appropriate access to and quality of care for enrollees in any plan that allows enrollees to access health care services from contractual providers without a referral or authorization from the primary care physician. The rules may include, but shall not be limited to, a system for the retrieval and compilation of enrollees' medical records.