This is the ValueSet that contains all the codes in Allowed Personal Number Identifier Systems (http://canonical.fhir.link/servicewell/wof-connect/ValueSet/wof-personal-number-system-vs) and Allowed Personal Number Identifier Systems (http://canonical.fhir.link/servicewell/wof-connect/ValueSet/wof-personal-number-system-vs). E.g. what you have to deal with if you get resources containing codes in either of them