This value set includes codes based on the following rules:

• Include these codes as defined in urn:oid:2.16.840.1.114222.4.5.274 version 20200526

  Code	Display
  PHC904	Acute/Convalescent IgG Difference Test
  PHC907	Measles IgG EIA (Acute)
  PHC908	Measles IgG EIA (Convalescent)
  PHC906	Measles IgM EIA (Capture)
  PHC905	Measles IgM EIA (Non-capture)

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

  Code	Display
  444077007	RT-PCR
  30662005	Immunofluorescent Antibody Assays (IFA)
  12717000	Viral Culture

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

  Code	Display
  OTH	Other Lab Tests