MedicaidBilling CodesHigh impact
Billing of Influenza Vaccines for the 2018-2019 Influenza Season pdf
Connecticut Medicaid (HUSKY Health)·CT · Family Medicine, Internal Medicine, General Practice +1 more·Provider Bulletin
We identified it
Jun 20, 2026
Summary
Due to high claim denial rates, providers must ensure they use the correct HCPCS codes that match the 11-digit NDC numbers when billing influenza vaccines to Connecticut Medicaid. Three specific vaccine NDCs have been identified as having the highest denial rates due to improper code cross-walking.
Action Required
Immediately: Billing team must verify that NDC numbers exactly match HCPCS codes for all influenza vaccine claims to Connecticut Medicaid. Use the provided resources to cross-walk vaccine NDCs to correct codes, focusing on the three high-denial vaccines: AFLURIA QUAD (NDC 33332-0418-10), FLUZONE HIGH-DOSE (NDC 49281-0403-65), and FLUARIX QUAD (NDC 58160-0898-52). Update billing system validation rules to prevent NDC/HCPCS mismatches. Claims with mismatched codes will be denied.