MedicaidBilling CodesHigh impact
Update to Community Mental Health Service Array
Illinois Medicaid - HFS·IL · Psychiatry·Provider Notice
Effective date
Aug 1, 2018
We identified it
Jun 20, 2026
Summary
Illinois Medicaid is introducing new billable mental health services including Integrated Assessment and Treatment Planning (IATP) and expanded crisis services (Crisis Intervention, Mobile Crisis Response, Crisis Stabilization) effective August 1, 2018. IATP will replace Mental Health Assessment and Treatment Plan Development services and requires use of HFS-approved instruments.
Action Required
By August 1, 2018: Mental health providers must transition from billing Mental Health Assessment and Treatment Plan Development to new IATP service codes. Update billing systems to include new crisis service billing options (Crisis Intervention, Mobile Crisis Response, Crisis Stabilization). Obtain Crisis Certification from HFS if planning to provide MCR services. Route all crisis referrals through CARES line for authorization of Crisis Stabilization services.