http://ns.electronichealth.net.au/id/hpio-scoped/accessionnumber/1.0
identifiers namespace
This namespace is used by an organisation that has a registered HPI-O (Healthcare Provider Identifier for Organisations) to issue accession numbers.
An example of the syntax of an HPI-O scoped accession number identifier system using this namespace is:
In OID-based systems use 1.2.36.1.2001.1005.53.