MedicaidAdministrativeMedium impact
Review Medicaid Billing Reminders and Requirements for Adaptive Behavior Support Services Providers
BCBS Illinois·IL · Psychiatry·Government Programs
Effective date
May 8, 2026
We identified it
Jun 16, 2026
Summary
Illinois Medicaid now requires specific provider reporting on ABS (Adaptive Behavior Support Services) claims. The attested provider rendering services must be reported as the rendering provider, and when a registered behavior technician provides services, the supervising ABS clinician must also be reported as the supervising provider.
Action Required
Immediately: Billing team must update claim submission process for ABS services to ensure correct provider reporting. For paper claims (CMS-1500): report rendering provider in Box 24J and supervising provider in Box 17. For electronic claims (837P): report rendering provider in 2310B NM1 segment and supervising provider in 2310D NM1 segment. When registered behavior technician is the rendering provider, the supervising ABS clinician must be included. Claims with incorrect provider information will be denied for noncompliance.