MedicaidCoverageMedium impact
Billing for IV Infused Monoclonal Antibody Treatment and COVID-19 Vaccine Administration in the Home Setting
Illinois Medicaid - HFS·IL · Infectious Disease, Family Medicine, General Practice·Provider Notice
Effective date
May 2, 2023
We identified it
Jun 20, 2026
Summary
Illinois Medicaid now reimburses Home Health Agencies and Local Health Departments for IV monoclonal antibody administration, COVID-19 vaccine administration, and vaccine counseling in home settings. These services must be billed separately from other nursing visits on the same date of service.
Action Required
Immediately: Home Health Agencies and Local Health Departments in Illinois must update billing procedures to bill IV monoclonal antibody administration and COVID-19 vaccine services separately from other nursing visits. Use CPT 99402 for vaccine counseling (face-to-face visits for children 6 months-20 years only). Bill claims on 837 Institutional format. Verify patient eligibility in MEDI system for uninsured patients before providing monoclonal antibody treatment.