This is the ValueSet that contains all the codes in Lab Test - Type - Generic - LOINC (http://smart.who.int/ddcc/ValueSet/LabTestTypeLoincValueSet) and Lab Test - Type - Generic - LOINC (http://smart.who.int/ddcc/ValueSet/LabTestTypeLoincValueSet). E.g. what you have to deal with if you get resources containing codes in either of them