This is the ValueSet that contains all the codes in eHDSI Pregnancy Information (http://terminology.ehdsi.eu/ValueSet/eHDSIPregnancyInformation) and eHDSI Pregnancy Information (http://terminology.ehdsi.eu/ValueSet/eHDSIPregnancyInformation). E.g. what you have to deal with if you get resources containing codes in either of them