<Observation xmlns="http://hl7.org/fhir">
    <id value="Observation-Histologie-example-1" />
    <meta>
        <profile value="http://dktk.dkfz.de/fhir/StructureDefinition/onco-core-Observation-Histologie" />
    </meta>
    <status value="final" />
    <code>
        <coding>
            <system value="http://loinc.org" />
            <code value="59847-4" />
        </coding>
    </code>
    <subject>
        <reference value="Patient/Patient-Patient-example-1" />
    </subject>
    <encounter>
        <reference value="Encounter/Encounter-Fall-example-1" />
    </encounter>
    <effectiveDateTime value="2018-01-01" />
    <!--  @TODO  System vielleicht als FixeValue im Profil? -->
    <valueCodeableConcept>
        <coding>
            <system value="urn:oid:2.16.840.1.113883.6.43.1" />
            <version value="32" />
            <code value="8140/3" />
        </coding>
    </valueCodeableConcept>
    <specimen>
        <reference value="Specimen/Specimen-Specimen-example-1" />
    </specimen>
    <hasMember>
        <reference value="Observation/Observation-Grading-example-1" />
    </hasMember>
</Observation>