TITLE 89: SOCIAL SERVICES
CHAPTER IV: DEPARTMENT OF HUMAN SERVICES
SUBCHAPTER e: EARLY CHILDHOOD SERVICES
PART 500 EARLY INTERVENTION PROGRAM
SUBPART A: GENERAL PROVISIONS
Section 500.10 Purpose
Section 500.15 Incorporation by Reference
Section 500.20 Definitions
SUBPART B: COMPONENTS OF THE STATEWIDE SYSTEM
Section 500.25 Public Awareness and Child Find
Section 500.30 Central Directory
Section 500.35 Local Interagency Councils
Section 500.40 Illinois Interagency Council on Early Intervention
Section 500.45 Regional Intake Entities
Section 500.50 Eligibility
Section 500.55 Early Intervention Services/Devices
Section 500.60 Provider Qualifications/Credentialing and Enrollment
Section 500.65 Monitoring
SUBPART C: SERVICE DELIVERY REQUIREMENTS
Section 500.70 Intake
Section 500.75 Eligibility Determination
Section 500.80 Individualized Family Service Plan Development
Section 500.85 Individualized Family Service Plan Implementation
Section 500.90 Individualized Family Service Plan Updating
Section 500.95 Case Transfer
Section 500.100 Transition to Part B or Other Appropriate Services at Age Three
Section 500.105 Case Closure
Section 500.110 Recordkeeping
Section 500.115 Service Provider Requirements
SUBPART D: FINANCIAL MATTERS
Section 500.120 Billing Procedures
Section 500.125 Payor of Last Resort
Section 500.130 Family Fee/Insurance
SUBPART E: PROCEDURAL SAFEGUARDS/CLIENT RIGHTS
Section 500.135 Minimum Procedural Safeguards
Section 500.140 Request for a Due Process Hearing
Section 500.145 Mediation
Section 500.150 Confidentiality/Privacy
Section 500.155 Right to Consent
Section 500.160 Surrogate Parents
Section 500.165 Written Prior Notice
Section 500.170 State Complaint Procedure
Section 500.APPENDIX A Sliding Fee Schedule
Section 500.APPENDIX B Assessment Instruments (Repealed)
Section 500.APPENDIX C Requirements for Professional and Associate Level Early Intervention (EI) Credentialing and Enrollment to Bill
Section 500.APPENDIX D Use of Associate Level Providers
Section 500.APPENDIX E Medical Conditions Resulting in High Probability of Developmental Delay (not an exclusive list)
AUTHORITY: Implementing and authorized by the Early Intervention Services System Act [325 ILCS 20] and Part C of the Individuals with Disabilities Education Act (IDEA) (20 USC 1400).
SOURCE: Adopted at 25 Ill. Reg. 8190, effective July 1, 2001; amended at 27 Ill. Reg. 2611, effective February 7, 2003; amended at 27 Ill. Reg. 13438, effective July 24, 2003; amended at 28 Ill. Reg. 8727, effective June 1, 2004; amended at 29 Ill. Reg. 2254, effective January 31, 2005; amended at 32 Ill. Reg. 2161, effective January 23, 2008; amended at 33 Ill. Reg. 8206, effective June 8, 2009; amended at 38 Ill. Reg. 11086, effective May 12, 2014; amended at 39 Ill. Reg. 14900, effective October 27, 2015; amended at 40 Ill. Reg. 9491, effective June 29, 2016; amended at 44 Ill. Reg. 12739, effective July 20, 2020; amended at 47 Ill. Reg. 1318, effective January 12, 2023; amended at 49 Ill. Reg. 8450, effective June 5, 2025; amended at 49 Ill. Reg. 14654, effective October 30, 2025; amended at 49 Ill. Reg. 16286, effective December 12, 2025.
SUBPART A: GENERAL PROVISIONS
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)
