Extension( ethnic-category) in Patient Resource Json Example [CC profile]

FHIR
1

Hi All,

I am trying to read ethnic-category from extension from the patient fhir message (json) using HAPI Fhir STU3 library. I am unable to get the code from it. Following is the extension sample,
“extension”:[
{
“url”:“http://fhir.nhs.net/ValueSet/ethnic-category-1”,
“valueCodeableConcept”:{
“coding”:[
{
“system”:“http://fhir.nhs.net/ValueSet/ethnic-category-1”,
“code”:“A”,
“display”:“British, Mixed British”
}
],
“text”:“British, Mixed British”
}
},
{
“url”:“careManager”,
“valueReference”:{
“reference”:“Practitioner/54w5wwwfasdfd”,
“display”:“careManager”
}
}
],
is it valid content if so please share how can I get the code ‘A’ from this ?
I tried upto the followign
patient.getExtensionsByUrl(“http://fhir.nhs.net/ValueSet/ethnic-category-1”).get(0).getValue()

thanks in advance

2

Your code is nearly there.

for (Extension extension : 
 patient.getExtensionsByUrl(“http://fhir.nhs.net/ValueSet/ethnic-category-1”)) 
 {
     if (extension.getValue() instanceof CodeableConcept) {
               CodeableConcept concept = (CodeableConcept) extension.getValue();
               // etc
           }
  }

From a UK perspective the extension is wrong but not necessarily invalid though. You can chose to accept it but I’d recommend getting it corrected.

{
"extension": [
    {
        // This is the correct Url
        "url": "https://fhir.hl7.org.uk/STU3/CodeSystem/CareConnect-EthnicCategory-1",  
        "valueCodeableConcept": {
            "coding": [
                {
                    // The system was a ValueSet, it should be a CodeSystem
                    "system": "https://fhir.hl7.org.uk/STU3/CodeSystem/CareConnect-EthnicCategory-1",
                    "code": "A",
                    "display": "British, Mixed British"
                }
            ],
            "text": "British, Mixed British"
        }
    }
]

}

3

Thank you, where this url and system url (https://fhir.hl7.org.uk/STU3/CodeSystem/CareConnect-EthnicCategory-1) from? when I checked the Care Connect Profile the url has valueSet instead of CodeSystem ? please clarify ?

https://fhir.hl7.org.uk/STU3/StructureDefinition/Extension-CareConnect-EthnicCategory-1

thanks

4

Thats a common mistake. This is saying use a code which is defined in this ValueSet

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When you look at the ValueSet, the CodeSystem is listed at the bottom.

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I think the way the profile has been created is confusing, it’s possibly been done that way because that is how it was done in DSTU2.

5

After some comments.

Based on the above, I believing the current spec led to the issue and was wondering if standard FHIR implementation guide would have been better. E.g.

https://project-wildfyre.github.io/UK-STU3/CareConnect-EthnicCategory-1.html

This has several issues at the mo (I’m experimenting)