This is the ValueSet that contains all the codes in IMMZD18SMeningococcalQuadrivalentConjugateVaccines1Dose ValueSet for Decision Table (http://smart.who.int/immunizations/ValueSet/IMMZD18SMeningococcalQuadrivalentConjugateVaccines1DoseVS) and IMMZD18SMeningococcalQuadrivalentConjugateVaccines1Dose ValueSet for Decision Table (http://smart.who.int/immunizations/ValueSet/IMMZD18SMeningococcalQuadrivalentConjugateVaccines1DoseVS). E.g. what you have to deal with if you get resources containing codes in either of them