A laboratory result can be supplemented with any number of previous results, if this
information is important. Previous laboratory results MUST be associated to the same
patient, the same test, the same procedure, and the same test kit, otherwise they
are NOT ALLOWED, here.
Context
Parent nodes of template element with id 2.16.756.5.30.1.1.10.4.22
<observationclassCode="OBS"moodCode="EVN"> <templateIdroot="2.16.756.5.30.1.1.10.4.22"/><codedisplayName="Erythrocytes [#/volume] in Blood by Automated count"codeSystemName="LOINC"codeSystem="2.16.840.1.113883.6.1"code="789-8"/><statusCodecode="completed"/><effectiveTime> <lowvalue="20180320170248+0100"/></effectiveTime><value/></observation>
(hl7:code/@code=parent::hl7:entryRelationship/parent::hl7:observation/hl7:code/@code)
and (hl7:code/@codeSystem=parent::hl7:entryRelationship/parent::hl7:observation/hl7:code/@codeSystem)
Message
The previous result MUST contain the same code as the current laboratory result.