<status value="active" /> <experimental value="false" /> <date value="2026-04-01" /> <publisher value="Ontario Health" /> <contact> <name value="Ontario Health - Digital Health Standards" /> <telecom> <system value="url" /> <value value="https://ehealthontario.on.ca/en/it-professionals/standards" /> </telecom> <telecom> <system value="email" /> <value value="DigitalHealthStandards@ontariohealth.ca" /> </telecom> </contact> <description value="Reasons for why the immunization occurred." /> <immutable value="false" /> <compose> <include> <system value="http://snomed.info/sct" /> <concept> <code value="424352007" /> <display value="Public health case investigation" /> </concept> <concept> <code value="711365007" /> <display value="High risk immunization" /> </concept> <concept> <code value="429060002" /> <display value="Procedure to meet occupational requirement" /> </concept> <concept> <code value="409516001" /> <display value="Post-exposure prophylaxis" /> </concept> <concept> <code value="1137457009" /> <display value="Pre-exposure prophylaxis" /> </concept> <concept> <code value="8171000087105" /> <display value="Routine immunization" /> </concept> <concept> <code value="414448007" /> <display value="Identified as high risk for travel immunization" /> </concept> </include> </compose> </ValueSet>