MedicaidCoverageMedium impact
Updated Extension to Respiratory Syncytial Virus (RSV) Season
Illinois Medicaid - HFS·IL · Family Medicine, Internal Medicine, Pediatrics +1 more·Provider Notice
Effective date
Mar 31, 2026
We identified it
Jun 16, 2026
Summary
Illinois Medicaid has extended coverage for RSV immunizations through April 30, 2026 due to continued high RSV activity in the state. This affects billing for monoclonal antibody treatments (nirsevimab, clesrovimab) for infants and children, and RSV vaccinations for adults 50+ years old.
Action Required
Through April 30, 2026: Billing team must verify Illinois Medicaid coverage for RSV immunizations remains active beyond the typical March end date. Update billing system to allow RSV monoclonal antibody claims (nirsevimab, clesrovimab) for eligible infants under 8 months and high-risk children 8-19 months. Ensure RSV vaccination claims for adults 75+ and high-risk adults 50-74 are processed through April 30, 2026.