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Purposeof Reference Observation

[Observation: templateId 2.16.840.1.113883.10.20.6.2.9]

A Purpose of Reference Observation describes the purpose of the DICOM composite object reference. Appropriate codes, such as externally defined DICOM codes, may be used to specify the semantics of the purpose of reference. When this observation is absent, it implies that the reason for the reference is unknown.

  1. SHALL contain exactly one [1..1] templateId ( CONF:9266, CONF:10531 ) such that it
    1. SHALL contain exactly one [1..1] @root="2.16.840.1.113883.10.20.6.2.9"
  2. SHALL contain exactly one [1..1] @classCode="OBS" Observation (CodeSystem: 2.16.840.1.113883.5.6 HL7ActClass) (CONF:9264)
  3. SHALL contain exactly one [1..1] @moodCode="EVN" Event (CodeSystem: 2.16.840.1.113883.5.1001 HL7ActMood) (CONF:9265)
  4. SHALL contain exactly one [1..1] code (CONF:9267)
  5. SHOULD contain zero or more [0..*] value with data type CD, where the @code SHOULD be selected from ValueSet DICOMPurposeOfReference 2.16.840.1.113883.11.20.9.28 DYNAMIC (CONF:9273)
    • The value element is a SHOULD to allow backwards compatibility with the DICOM CMET.¬†¬†Note that the use of ASSERTION for the code differs from the DICOM CMET. This is intentional. The DICOM CMET was created before the Term Info guidelines describing the use of the assertion pattern were released. It was determined that this IG should follow the latest Term Info guidelines. Implementers using both this IG and the DICOM CMET will need to be aware of this difference and apply appropriate transformations

  6. code SHOULD contain zero or one [0..1] code="ASSERTION" (CodeSystem: ActCode 2.16.840.1.113883.5.4) (CONF:9268)

Purposeof Reference Observation example

<observation xmlns="urn:hl7-org:v3">
  <id root="MDHT" extension="1354665181"/>
  <code code="1284982534"/>
  <effectiveTime>
    <low value="2013"/>
    <high value="2013"/>
  </effectiveTime>
</observation>