To express presence or absence of a clinical phenomenon
Presence Absence reference set
This reference set is for recording and retrieving presence-absence information. In practice, the presence or absence of a phenomenon will be coordinated or constructed using members of this refset to convey the 'absent-ness' or present-ness' of something a clinician wishes to record.
Absent (qualifier value)
Absent leg (finding); Absence (morphlogic abnormality); Absences (finding); Not detected (qualifier value); Not seen (qualifier value); Present ++ out of ++++ (qualifier value); Presence (property) (qualifier value)
Zero or one
This reference set is intended to be a two-value reference. Intermediate or graded levels of absence/presence, or levels of certainty about absence/presence and other related meanings are out of scope. See "Examples of what to exclude" above.
Yes-No refset