2019-05-14 - CMAG Meeting

CORE content thoughts

• A -- Derivative concepts (non-CORE)

  • 1) completely (predictably) derivative: can be generated or maintained completely automatically – 3 kinds of "derivativeness"

    • - derivative children (e.g., most lateralized concepts, derived by instantiating the lateratily attribute of the non-lateralized parent)

      • other such attributes: severity (?)

    • - derivative ancestors (e.g., all intermediate medicinal product concepts (MP, MP only, MPF, MPF only) can be generated algorithmically from the corresponding CDs)

    • - "sideways" derivative concepts

      • * situation concepts (whole hierarchy)

      • * specimen (whole hierarchy)

      • * disposition and structure classes for medicinal products (derived from their counterpart in the substance hierarchy)

  • 2) Some derivative concepts require editing, but possibly less than essential concepts

    • coordinated concepts (e.g., X due to Y: X and Y are CORE, but X due to Y is [partially] derivative)

• B -- Essential concepts (CORE)

  • * atomic

  • * primitive

  • * frequently used

  • * important for some reason other than frequency (e.g., rare disease)

Found limited evidence of use of"on examination" concepts in VSAC value sets (https://vsac.nlm.nih.gov/ – requires UMLS license)

For example:

• 162930007 On examination - ankylosing spondylitis chest deformity (disorder)

  • in measure CMS249v2 (Government program)

  • comment: no equivalent finding in the same value set

• 162769006 On examination - Underweight (finding) and 275947003 On examination - overweight (finding)
  
  

  • in measure CMS69v8 (Government program)

  • comment: interestingly, the corresponding finding is also part of the value set (248342006 Underweight (finding); 238131007 Overweight (finding)), so losing the O/E concept would not be too detrimental