405 ILCS 5/5-105
Each recipient of services provided directly or funded by the Department and the estate of that recipient is liable for the payment of sums representing charges for services to the recipient at a rate to be determined by the Department in accordance with this Act. If a recipient is a beneficiary of a trust described in Section 509 of the Illinois Trust Code, the trust shall not be considered a part of the recipient's estate and shall not be subject to payment for services to the recipient under this Section except to the extent permitted under Section 509 of the Illinois Trust Code. If the recipient is unable to pay or if the estate of the recipient is insufficient, the responsible relatives are severally liable for the payment of those sums or for the balance due in case less than the amount prescribed under this Act has been paid. If the recipient is under the age of 18, the recipient and responsible relative shall be liable for medical costs on a case-by-case basis for services for the diagnosis and treatment of conditions other than that child's disabling condition. The liability shall be the lesser of the cost of medical care or the amount of responsible relative liability established by the Department under Section 5-116. Any person 18 through 21 years of age who is receiving services under the Education for All Handicapped Children Act of 1975 ( Public Law 94-142) or that person's responsible relative shall only be liable for medical costs on a case-by-case basis for services for the diagnosis and treatment of conditions other than the person's disabling condition. The liability shall be the lesser of the cost of medical care or the amount of responsible relative liability established by the Department under Section 5-116. In the case of any person who has received residential services from the Department, whether directly from the Department or through a public or private agency or entity funded by the Department, the liability shall be the same regardless of the source of services. The maximum services charges for each recipient assessed against responsible relatives collectively may not exceed financial liability determined from income in accordance with Section 5-116. Where the recipient is placed in a nursing home or other facility outside the Department, the Department may pay the actual cost of services in that facility and may collect reimbursement for the entire amount paid from the recipient or an amount not to exceed those amounts determined under Section 5-116 from responsible relatives according to their proportionate ability to contribute to those charges. The liability of each responsible relative for payment of services charges ceases when payments on the basis of financial ability have been made for a total of 12 years for any recipient, and any portion of that 12 year period during which a responsible relative has been determined by the Department to be financially unable to pay any services charges must be included in fixing the total period of liability. No child is liable under this Act for services to a parent. No spouse is liable under this Act for the services to the other spouse who willfully failed to contribute to the spouse's support for a period of 5 years immediately preceding his or her admission. Any spouse claiming exemption because of willful failure to support during any such 5 year period must furnish the Department with clear and convincing evidence substantiating the claim. No parent is liable under this Act for the services charges incurred by a child after the child reaches the age of majority. Nothing in this Section shall preclude the Department from applying federal benefits that are specifically provided for the care and treatment of a person with a disability toward the cost of care provided by a State facility or private agency.
405 ILCS 5/5-105