This value set includes codes based on the following rules:

• Include these codes as defined in http://snomed.info/sct version http://snomed.info/sct/731000124108/version/20200901

  Code	Display
  410605003	Confirmed present (qualifier value)
  2931005	Probable diagnosis (contextual qualifier) (qualifier value)
  415684004	Suspected (qualifier value)

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor version 20090501

  Code	Display
  UNK	unknown