- HPI-O or HPIO for type/text?
- type/coding/code/@value = 'XX' other options? 'NOI' as an AU extension (already approved for v2.8.2 or v2.9?)
- constraints: value/@value - 16 digits; prefix 800362; Luhn check
Example:
<Organization>
...
<identifier>
<type>
<coding>
<system value="http://hl7.org/fhir/v2/0203"/>
<code value="NOI"/>
<display value="National Organization Identifier"/>
</coding>
<text value="HPI-O"/>
</type>
<system value="http://ns.electronichealth.net.au/id/hi/hpio/1.0"/>
<value value="8003627500000328"/>
</identifier>
...
</organization>