This is the ValueSet that contains codes in both IMMZ.Z.DE33 ValueSet for Tetanus and diphtheria-containing vaccines (DT) (http://smart.who.int/immunizations/ValueSet/IMMZ.Z.DE33) and IMMZ.Z.DE33 ValueSet for Tetanus and diphtheria-containing vaccines (DT) (http://smart.who.int/immunizations/ValueSet/IMMZ.Z.DE33).