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  1. Identifying true ambiguity rather than lack of specificity or the meaning is "not known" and resolving the full suite of POSSIBLT_EQUIVALENT_To target concepts can sometimes be difficult.
  2. Share difficult ambiguous inactivations in the internal editor's meetings
  3. It is possible that one of the interpretations of the ambiguity gives rise to a concept that is not clinically meaningful. It is still important to create a concept to represent this concept to ensure that there is full semantic equivalence between the sum of the POSSIBLY_EQUIVALENT_TO targets and the ambiguous concept being inactivated as this is the only way of supporting analysis of historically coded clinical data that may have used the ambiguous concept. As a secondary action, the concept that is not clinically meaningful may then itself be inactivated.


Examples:

Panel
titleInherently ambiguous FSN with only one POSSIBLY_EQUIVALENT_TO target concept

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Two possible meanings:

  • Polycystic ovary syndrome - available in

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  • SCT 
    Concept
    t237055002 |Polycystic ovary syndrome (disorder)|
  • Polycystic ovary - did not exist in SCT

Resolution:

  • Create a new concept: Polycystic ovary
  • Inactivate 69878008 |Polycystic ovaries (disorder)| with the following target historical associations:
    • POSSIBLY_EQUIVALENT_TO 
      Concept
      t781067001 |Polycystic ovary (disorder)|
    • POSSIBLY_EQUIVALENT_TO 
      Concept
      t237055002 |Polycystic ovary syndrome (disorder)|


Panel
titleIdentical FSN but different semantic tag

Two duplicate concepts:

  • Concept
    t145857006 |Soft tissue X-ray abnormal (situation)

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  • |
  • Concept
    t168711005 | Soft tissue X-ray abnormal (finding)|

Resolution:

  • Inactivate
    Concept
    t145857006 |Soft tissue X-ray abnormal (situation)|
     with the following SAME_AS historical association:

    • Scg expression
      168711005 |Soft tissue X-ray abnormal (finding)




Managing incoming historical associations:

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