This is the ValueSet that contains all the codes in New regimen(s) after substitution within third-line regimen ValueSet (http://smart.who.int/hiv/ValueSet/HIV.D.DE495) and New regimen(s) after substitution within third-line regimen ValueSet (http://smart.who.int/hiv/ValueSet/HIV.D.DE495). E.g. what you have to deal with if you get resources containing codes in either of them