On September 18, 2026, HLN released a new version of the open-source Immunization Calculation Engine (ICE) software with support for the 2026–2027 respiratory season recommendations issued by the American Academy of Pediatrics (AAP) and the American Academy of Family Physicians (AAFP).
What’s New in ICE
COVID-19:
- Added support for the 2026–2027 season, beginning August 28, 2026.
- Recommendations for the new season begin September 2, 2026, or later, depending on applicable series intervals and patient vaccination history.
- The COVID-19 series and vaccine CVX codes from the 2025-2026 season remain applicable for the new season.
Influenza:
- Added support for the new mRNA influenza product (CVX 338).
Building on ICE’s existing support for influenza and RSV immunization recommendations, these updates align ICE with evidence-based immunization guidelines issued by AAP and AAFP for the 2026–2027 respiratory season.
See the latest logic updates in action using CDS Insight, a free tool that allows users to interact with HLN Consulting’s locally-hosted instance of the latest version of ICE. Simulate patient scenarios and receive immunization evaluations and recommendations based on the latest ICE rules.
Please see the Release Notes for additional details and download ICE v2.58.1 today.
Questions? Please reach out to the ICE team at ice@hln.com.