CurrentApr 1, 2026 – Sep 30, 2026
Reference tools
Underimmunization status
Disease index · Modifiers and references
Modifiers and references · icd10cm-index-April-1-2026-XML.xml
Underimmunization status
Z28.39
Underimmunization statusCOVID-19
Z28.31-
Underimmunization status › COVID-19partially vaccinated(for)
Z28.311
Underimmunization status › COVID-19unvaccinated(for)
Z28.310
