HPI-O based Accession Number
View at oid-info.com
This OID is used as the root of an arc that organisations can use to issue accession numbers in accordance with the DICOM standard. The OID is never used directly – instead, the 16 digit HPIO is appended to the OID, like so: 184.108.40.206.2001.1005.53.[HPIO], where it goes in the CDA id root to identify accession numbers issued by that organization (which goes in the id extension).