Laboratory Presence and Absence Findings

Laboratory result qualifier values expressing presence, absence, and related ordinal findings (e.g. detected/not detected, positive/negative, reactive/non-reactive, ordinal "+" gradings). This value set is aligned with the eHDSI PresenceAbsence value set adopted by the eEHMSEG (https://fhir.ehdsi.eu/laboratory/ValueSet-eHDSIPresenceAbsence.html).