This elements represents the organization that is in charge of maintaining the document.
This information is required by the CDA R2 standard and shall be recorded in the ClinicalDocument/custodian/assignedCustodian/ representedCustodianOrganization element.
The representedCustodianOrganization SHALL have:
the name, addr and telecom elements (nullFlavor allowed), due to constrains derived
by the H&P specification (see § 5 Constraints)