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Comment: OO: update 7.4.1 with new 74028-2 loinc code


Patient referrals containing structured HL7v2 VMR information should contain an OBX as follows which acts as a header. Note that the OBX-4 sub-ID field is the dotted decimal root value that structured child elements must belong. In the example below this is 1 but may be another number. The LOINC value "6057274028-5^^LN2^^LN" in OBX-3 Observation Identifier indicates that this OBX is defining the report template ID which can be found in OBX-5 Observation Value (RP).