Identifies the purpose for this identifier, if known .
This Code system is referenced in the content logical definition of the following value sets:
This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)
This case-sensitive code system http://hl7.org/fhir/identifier-use defines the following codes:
Code
Display
Definition
usual
Usual
The identifier recommended for display and use in real-world interactions.
official
Official
The identifier considered to be most trusted for the identification of this item.
temp
Temp
A temporary identifier.
secondary
Secondary
An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context.