SNOMED CT Editorial Advisory Group

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Inactivation ReasonAssociation TypeDescription

Meaning unknown

No association required

The inactivation reason “Meaning Unknown” explicitly states that the meaning of the inactivated concept (A) cannot, in the judgment of the author/editor be determined and therefore no historical association should be provided.

Guidance
  • Annotation
    Additional notes on why this concept was considered not to represent a known clinical phenomenon.
  • Dropdown list (Where no replacement is appropriate)
    No suitable replacement concept identified


Additional notes:

  1. Using the SCT term as a search term in PubMed may return some matches that give an indication of meaning and a return of no matches would support the use of this reason for inactivation.
  2. Consider consulting domain experts to establish whether the concept to be inactivated is or is not considered to have clinical meaning within their sphere of practice. Use the sub and supertypes to identify the domain to consult.


Panel
titleExample

Concept:

  • Concept
    t194964003 |Milk spots of pericardium (disorder)|

This concept has been inherited from ICD-9 via Read Codes. Some sources recognize it as a normal morphology, others as an abnormal morphology. So, as a disease entity, nobody seems to know what it means or what the case definition is.

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