MedicaidBilling CodesMedium impact
Inpatient Detoxification Readmissions – Crosswalk to ICD-10 Diagnosis Codes
Illinois Medicaid - HFS·IL · Psychiatry, Internal Medicine, Emergency Medicine·Provider Notice
Effective date
Sep 29, 2015
We identified it
Jun 20, 2026
Summary
Illinois updated ICD-10 diagnosis codes for inpatient detoxification readmissions, crosswalking from the previous ICD-9 codes. The 60-day readmission restriction policy remains unchanged - inpatient detox stays are not reimbursed if there was a previous inpatient detox within 60 days.
Action Required
Immediately: Illinois providers must review updated Attachment B on the department's QIO webpage for the new ICD-10 detoxification diagnosis codes. Update billing systems to flag inpatient detox admissions with these codes for 60-day lookback review. Contact eQHealth Solutions at 1-800-418-4045 with questions about the review process.