This is the ValueSet that contains all the codes in IMMZD18SMeningococcalMenAConjugateVaccine2Doses ValueSet for Decision Table (http://smart.who.int/immunizations/ValueSet/IMMZD18SMeningococcalMenAConjugateVaccine2DosesVS) and IMMZD18SMeningococcalMenAConjugateVaccine2Doses ValueSet for Decision Table (http://smart.who.int/immunizations/ValueSet/IMMZD18SMeningococcalMenAConjugateVaccine2DosesVS). E.g. what you have to deal with if you get resources containing codes in either of them