ValueSet-nhi-use

Include these codes as defined in http://hl7.org/fhir/identifier-use

Code	Display	Definition
official	Official	The identifier considered to be most trusted for the identification of this item. Sometimes also known as "primary" and "main". The determination of "official" is subjective and implementation guides often provide additional guidelines for use.
old	Old	The identifier id no longer considered valid, but may be relevant for search purposes. E.g. Changes to identifier schemes, account merges, etc.