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Age Observation

[Observation: templateId 2.16.840.1.113883.10.20.22.4.31]

This Age Observation represents the subject's age at onset of an event or observation. The age of a relative in a Family History Observation at the time of that observation could also be inferred by comparing RelatedSubject/subject/birthTime with Observation/effectiveTime. However, a common scenario is that a patient will know the age of a relative when the relative had a certain condition or when the relative died, but will not know the actual year (e.g., "grandpa died of a heart attack at the age of 50"). Often times, neither precise dates nor ages are known (e.g. "cousin died of congenital heart disease as an infant").

  1. SHALL contain exactly one [1..1] templateId ( CONF:7899 ) such that it
    1. SHALL contain exactly one [1..1] @root="2.16.840.1.113883.10.20.22.4.31"
  2. SHALL contain exactly one [1..1] @classCode="OBS" Observation (CodeSystem: 2.16.840.1.113883.5.6 HL7ActClass) (CONF:7613)
  3. SHALL contain exactly one [1..1] @moodCode="EVN" Event (CodeSystem: 2.16.840.1.113883.5.1001 HL7ActMood) (CONF:7614)
  4. SHALL contain exactly one [1..1] code (CONF:7615)/@code="445518008" Age At Onset (CodeSystem: 2.16.840.1.113883.6.96 SNOMEDCT) (CONF:16776)
  5. SHALL contain exactly one [1..1] statusCode (CONF:15965)/@code="completed" Completed (CodeSystem: 2.16.840.1.113883.5.14 ActStatus) (CONF:15966)
  6. SHALL contain exactly one [1..1] value with data type PQ (CONF:7617)
  7. This value SHALL contain exactly one [1..1] @unit="1", which SHALL be selected from ValueSet AgePQ_UCUM 2.16.840.1.113883.11.20.9.21 DYNAMIC (CONF:7618)

Age Observation example

<observation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:hl7-org:v3">
  <id root="MDHT" extension="1461098468"/>
  <code code="305269210"/>
  <statusCode code="completed"/>
  <effectiveTime>
    <low value="2013"/>
    <high value="2013"/>
  </effectiveTime>
  <value xsi:type="PQ"/>
</observation>