Clinical Observations

<Observation xmlns="http://hl7.org/fhir">
    <id value="InspiredOxygenObservation" />
    <identifier>
        <system value="https://tools.ietf.org/html/rfc4122" />
        <value value="3a93044f-b6f0-46c8-9812-46b64cb45d85" />
    </identifier>
    <partOf>
        <reference value="Procedure/a74a7fb4-1a88-4530-a857-05d3659e783f" />
    </partOf>
    <status value="final" />
    <category>
        <coding>
            <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
            <code value="survey" />
            <display value="Survey" />
        </coding>
    </category>
    <code>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="371825009" />
            <display value="Patient on oxygen" />
        </coding>
    </code>
    <subject>
        <reference value="Patient/30d3de6f-e800-47fa-b610-b02c7c8e9d57" />
    </subject>
    <effectiveDateTime value="2018-10-04T14:17:59+01:00" />
    <performer>
        <reference value="Practitioner/627be677-3eb2-4db4-9570-5669fd8c92f5" />
    </performer>
    <performer>
        <reference value="Organization/cdaea3db-8b40-41dc-9834-b42503e12382" />
    </performer>
    <valueQuantity>
        <value value="2" />
        <unit value="liter per minute" />
        <system value="http://unitsofmeasure.org" />
        <code value="L/min" />
    </valueQuantity>
</Observation>

{
    "resourceType": "Observation",
    "id": "InspiredOxygenObservation",
    "identifier":  [
        {
            "system": "https://tools.ietf.org/html/rfc4122",
            "value": "3a93044f-b6f0-46c8-9812-46b64cb45d85"
        }
    ],
    "partOf":  [
        {
            "reference": "Procedure/a74a7fb4-1a88-4530-a857-05d3659e783f"
        }
    ],
    "status": "final",
    "category":  [
        {
            "coding":  [
                {
                    "system": "http://terminology.hl7.org/CodeSystem/observation-category",
                    "code": "survey",
                    "display": "Survey"
                }
            ]
        }
    ],
    "code": {
        "coding":  [
            {
                "system": "http://snomed.info/sct",
                "code": "371825009",
                "display": "Patient on oxygen"
            }
        ]
    },
    "subject": {
        "reference": "Patient/30d3de6f-e800-47fa-b610-b02c7c8e9d57"
    },
    "effectiveDateTime": "2018-10-04T14:17:59+01:00",
    "performer":  [
        {
            "reference": "Practitioner/627be677-3eb2-4db4-9570-5669fd8c92f5"
        },
        {
            "reference": "Organization/cdaea3db-8b40-41dc-9834-b42503e12382"
        }
    ],
    "valueQuantity": {
        "value": 2,
        "unit": "liter per minute",
        "system": "http://unitsofmeasure.org",
        "code": "L/min"
    }
}