Ill. Admin. Code tit. 89, § 145.80
a) Reimbursement Rate for Class I IMD Nursing Facilities
A facility classified under Section 145.40 shall have its per diem reimbursement rate for all residents set at the reimbursement rate that would otherwise be determined under the Department's administrative rules located at 89 Ill. Adm. Code 140, 147 and 153 for long term care services provided by nursing facilities that are not IMDs.
b) Reimbursement Rate for Class II IMD Nursing Facilities