The URD segment is used in sending unsolicited updates about orders and results. Some of the fields have parallels in the QRD segment. This field contains the date and time the update was generated by the application program. This field contains the priority associated with this report or update. Refer to HL7 table 0109 - Report priority for valid values.
Valid values are the type of transaction inquiry.
What subject filter for valid values. This table may be extended by local agreement during implementation. See the HL7 Implementation Guide for detailed examples of use of various query filter fields. This field could contain multiple occurrences separated by repetition delimiters. This field contains a list of the locations to which the report should be distributed.