Section 500.10  Purpose

The requirements contained in this Part are to define implementation of the Early Intervention Services System Act [325 ILCS 20] (hereafter "Act"), and Part C of the Individuals with Disabilities Education Act (IDEA) (20 U.S.C. 1400).  The requirements describe the statewide early intervention (EI) service program for children, birth to 36 months old, or a child eligible for Extended Services, who have disabilities due to developmental delay, have an eligible mental or physical condition that typically results in developmental delay, are at risk of substantial developmental delay according to informed clinical opinion, or a substantiated case of child abuse or neglect.

(Source:  Amended at 49 Ill. Reg. 14654, effective October 30, 2025)