An example to illustrate the extension to indicate other contact system(s) for a patient Richard Smith

Table View

Patient.id[0]UKCore-Extension-OtherContactSystem-Example
Patient.telecom[0].system[0]other
Patient.telecom[0].system[0].extension[0].url[0]https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-OtherContactSystem
Patient.telecom[0].system[0].extension[0].value[0].system[0]https://fhir.hl7.org.uk/CodeSystem/UKCore-OtherContactSystem
Patient.telecom[0].system[0].extension[0].value[0].code[0]textphone
Patient.telecom[0].system[0].extension[0].value[0].display[0]Minicom (Textphone)
Patient.telecom[0].value[0]+4413513341777
Patient.telecom[0].use[0]home

XML View

<Patient xmlns="http://hl7.org/fhir">
    <id value="UKCore-Extension-OtherContactSystem-Example" />
    <telecom>
        <system value="other">
            <!--  **************extension start**************  -->
            <extension url="https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-OtherContactSystem">
                <valueCoding>
                    <system value="https://fhir.hl7.org.uk/CodeSystem/UKCore-OtherContactSystem" />
                    <code value="textphone" />
                    <display value="Minicom (Textphone)" />
                </valueCoding>
            </extension>
            <!--  *************extension end ***************** -->
        </system>
        <value value="+4413513341777" />
        <use value="home" />
    </telecom>
</Patient>

JSON View

{
    "resourceType": "Patient",
    "id": "UKCore-Extension-OtherContactSystem-Example",
    "telecom":  [
        {
            "system": "other",
            "_system": {
                "extension":  [
                    {
                        "url": "https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-OtherContactSystem",
                        "valueCoding": {
                            "system": "https://fhir.hl7.org.uk/CodeSystem/UKCore-OtherContactSystem",
                            "code": "textphone",
                            "display": "Minicom (Textphone)"
                        }
                    }
                ]
            },
            "value": "+4413513341777",
            "use": "home"
        }
    ]
}