This is the ValueSet that contains codes in both Lab Test - Pathogen - COVID-19 - SNOMED CT (http://smart.who.int/ddcc/ValueSet/LabTestPathogenCovid19SnomedValueSet) and Lab Test - Pathogen - COVID-19 - SNOMED CT (http://smart.who.int/ddcc/ValueSet/LabTestPathogenCovid19SnomedValueSet).