This is the ValueSet that contains all the codes in New regimen after switch to third-line regimen ValueSet (http://smart.who.int/hiv/ValueSet/HIV.D.DE491) and New regimen after switch to third-line regimen ValueSet (http://smart.who.int/hiv/ValueSet/HIV.D.DE491). E.g. what you have to deal with if you get resources containing codes in either of them