Under what process was the case first identified?
Questionnaire Snippet for Case identification
In this example snippet of xml from the Questionnaire we embed a value set definition within the Questionnaire using codes from SNOMED CT.
<Questionnaire xmlns="http://hl7.org/fhir">
<contained>
<ValueSet>
<id value="Case_Identification"/>
<name value="Logica SNOMED CT Case_Identification"/>
<status value="active"/>
<compose>
<include>
<system value="http://snomed.org"/>
<concept>
<code value="386053000"/>
<display value="Evaluation procedure"/>
</concept>
<concept>
<code value="225368008"/>
<display value="Contact tracing"/>
</concept>
<concept>
<code value="225419007"/>
<display value="Surveillance"/>
</concept>
<concept>
<code value="261665006"/>
<display value="Unknown"/>
</concept>
</include>
</compose>
</ValueSet>
</contained>
…….
<item>
<linkId value=”0edf2c0a-c30e-11ea-87d0-0242ac130003”/>
<code>
<system value=”http://snomed.org”/>
<code value=”?????????”/>
<display value="Case identification"/>
</code>
<text>How was the case first identified?</text>
<type value=”choice”/>
<answerValueSet value=”#Case_Identification” />
</item>
……..
</Questionnaire>
Questionnaire Response for Case identification
<QuestionnaireResponse xmlns="http://hl7.org/fhir">
…….
<item>
<linkId>0edf2c0a-c30e-11ea-87d0-0242ac130003</linkId>
<text>How was the case first identified?</text>
<answer>
<valueCoding>
<system value=”http://snomed.org”/>
<code value=”386053000”/>
<display value=”By Clinician”/>
</valueCoding>
</answer>
</item>
……..
</QuestionnaireResponse>Questionnaire Response for Case identification Transformed to FHIR Observation based on ANF
They “Yes” answer to the Questionnaire for Case identification is transformed in the FHIR Observation as a Range of > 0 and <= INF based on the ANF specification.
<?xml version="1.0" encoding="UTF-8"?>
<Observation xmlns="http://hl7.org/fhir">
<identifier>e317c914-c30e-11ea-87d0-0242ac130003</identifier>
<status value="final"/>
<code>
<coding>
<system value="http://snomed.org"/>
<code value="386053000"/>
<display value="Case first identified by clinical evaluation"/>
</coding>
</code>
<subject>
<reference value="Patient"/>
</subject>
<focus>
<reference value=”Patient”/>
</focus>
<effectiveDateTime value="Time of observation"/>
<performer>
<reference value=”Practitioner”/>
</performer>
<valueRange>
<Range>
<low>
<value>0</value>
<comparator value=”>”/>
<code>
<system value=”http://snomed.org”/>
<code value=”118595003”/>
<display value="Quantity content"/>
</code>
</low>
<high>
<value>INF</value>
<comparator value=”<=”/>
<code>
<system value=”http://snomed.org”/>
<code value=”118595003”/>
<display value="Quantity content"/>
</code>
</high>
</Range>
</valueRange>
</Observation>