This is the ValueSet that contains all the codes in Immunization recommendation date criterion value set (https://terminology.dhp.uz/fhir/core/ValueSet/recommendation-date-criterion-vs) and Immunization recommendation date criterion value set (https://terminology.dhp.uz/fhir/core/ValueSet/recommendation-date-criterion-vs). E.g. what you have to deal with if you get resources containing codes in either of them