Ill. Admin. Code tit. 77, § 235.150
a) Following the occurrence of an adverse health care event, the health care facility must conduct a root cause analysis of the event. Following the analysis, the health care facility must:
2) Report to the Department any reasons for not taking corrective action.
c) The root cause analysis findings shall:
1) Focus primarily on systems and processes;
3) Contain the following key elements:
A) Details of the adverse health care event;
4) Describe contributing and underlying factors to the root cause; and
d) The corrective action shall include:
4) A specific implementation plan with the following:
A) Completion dates;