An example to illustrate a head circumference vital sign

Table View

Observation.id[0]UKCore-Observation-VitalSigns-HeadCircumference-Example
Observation.status[0]final
Observation.category[0].coding[0].system[0]http://terminology.hl7.org/CodeSystem/observation-category
Observation.category[0].coding[0].code[0]vital-signs
Observation.category[0].coding[0].display[0]Vital Signs
Observation.category[0].text[0]Vital Signs
Observation.code[0].coding[0].system[0]http://snomed.info/sct
Observation.code[0].coding[0].code[0]363812007
Observation.code[0].coding[0].display[0]Head circumference
Observation.code[0].coding[1].system[0]http://loinc.org
Observation.code[0].coding[1].code[0]9843-4
Observation.code[0].coding[1].display[0]Head Occipital-frontal circumference
Observation.subject[0].reference[0]Patient/UKCore-Patient-RichardSmith-Example
Observation.effective[0]2023-08-10
Observation.performer[0].reference[0]Organization/UKCore-Organization-LeedsTeachingHospital-Example
Observation.value[0].value[0]59
Observation.value[0].unit[0]centimeter
Observation.value[0].system[0]http://unitsofmeasure.org
Observation.value[0].code[0]cm

XML View

<Observation xmlns="http://hl7.org/fhir">
    <id value="UKCore-Observation-VitalSigns-HeadCircumference-Example" />
    <status value="final" />
    <category>
        <coding>
            <system value="http://terminology.hl7.org/CodeSystem/observation-category" />
            <code value="vital-signs" />
            <display value="Vital Signs" />
        </coding>
        <text value="Vital Signs" />
    </category>
    <code>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="363812007" />
            <display value="Head circumference" />
        </coding>
        <coding>
            <system value="http://loinc.org" />
            <code value="9843-4" />
            <display value="Head Occipital-frontal circumference" />
        </coding>
    </code>
    <subject>
        <reference value="Patient/UKCore-Patient-RichardSmith-Example" />
    </subject>
    <effectiveDateTime value="2023-08-10" />
    <performer>
        <reference value="Organization/UKCore-Organization-LeedsTeachingHospital-Example" />
    </performer>
    <valueQuantity>
        <value value="59" />
        <unit value="centimeter" />
        <system value="http://unitsofmeasure.org" />
        <code value="cm" />
    </valueQuantity>
</Observation>

JSON View

{
    "resourceType": "Observation",
    "id": "UKCore-Observation-VitalSigns-HeadCircumference-Example",
    "status": "final",
    "category":  [
        {
            "coding":  [
                {
                    "system": "http://terminology.hl7.org/CodeSystem/observation-category",
                    "code": "vital-signs",
                    "display": "Vital Signs"
                }
            ],
            "text": "Vital Signs"
        }
    ],
    "code": {
        "coding":  [
            {
                "system": "http://snomed.info/sct",
                "code": "363812007",
                "display": "Head circumference"
            },
            {
                "system": "http://loinc.org",
                "code": "9843-4",
                "display": "Head Occipital-frontal circumference"
            }
        ]
    },
    "subject": {
        "reference": "Patient/UKCore-Patient-RichardSmith-Example"
    },
    "effectiveDateTime": "2023-08-10",
    "performer":  [
        {
            "reference": "Organization/UKCore-Organization-LeedsTeachingHospital-Example"
        }
    ],
    "valueQuantity": {
        "value": 59,
        "unit": "centimeter",
        "system": "http://unitsofmeasure.org",
        "code": "cm"
    }
}