SNOMED CT Editorial Guide

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Note
titleAll attributes with a range constraint for <<|Pharmaceutical / biologic product (product)|

Where the MRCM allows Pharmaceutical / biologic product (product) and its descendants as valid values for Observable entity (observable entity), the Pharmaceutical / biologic product (product) subhierarchy is not currently used for values with these attributes in the International Release except for 787859002 |Vaccine product (medicinal product)| and its descendants, which can be used as valid values for this attribute.

Characterizes

This attribute specifies the process which the property describes, and on which the property (of this observable) depends. The process can be very general (e.g. excretion).

...

    • Arbitrary concentration of Varicella-Zoster virus (observable entity) has the 
      Concept
      t246093002 |Component (attribute)|
              of Human herpesvirus  of Human herpesvirus 3

Direct site

This attribute is used to specify the entity on which the observation is directly made. It may also be used when the observation is indirect, i.e. when a direct observation cannot be done.

...

This attribute is used to specify the instrument or equipment utilized to execute an action. Using device is appropriate when the device is actually used to carry out the action that is the focus of the procedure.

For example, 

    • Concept
      t415921007 |Temperature of forehead using skin strip thermometer (observable entity)|
       has 
      Concept
      t424226004 |Using device (attribute)|
             of 448916003 |Skin strip thermometer (physical object)|


Info
titleExamples without concept IDs

There are examples on this page that do not have a concept ID. These examples are included for members who may be modeling observables within their extension.