Devices on FHIR - Point-of-Care Device General Implementation Guide

This page is part of the Point-of-care Device FHIR IG (v0.1.0: STU 1 Draft) based on FHIR R3. . For a full list of available versions, see the Directory of published versions

Measurement Status Extension

Canonical URL

http://devices.fhir.org/StructureDefinition/observation-measurement-status

Extension Definition

Name	Card.	Type
Extension	0..*	Extension	Short description: Optional Extensions Element Definition: Optional Extension Element - found in all resources. Data Type Extension Constraints ele-1:All FHIR elements must have a @value or children ext-1:Must have either extensions or value[x], not both Mappings rim:n/a rim:N/A
extension	0..*	Extension	Short description: Additional Content defined by implementations Alternate names: extensions, user content Definition: May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments: There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data Type Extension Sliced: Unordered, Open, by url(Value) Constraints ele-1:All FHIR elements must have a @value or children ext-1:Must have either extensions or value[x], not both Mappings rim:n/a rim:N/A
url	1..1	uriFixed Value	Short description: identifies the meaning of the extension Definition: Source of the definition for the extension code - a logical name or a URL. Comments: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data Type uri Constraints ele-1:All FHIR elements must have a @value or children Fixed Value: http://devices.fhir.org/StructureDefinition/observation-measurement-status Mappings rim:n/a rim:N/A
valueCode	0..1	codeBinding	Short description: Measurement status Definition: Status information about observed values Comments: A stream of bytes, base64 encoded Data Type code Binding: measurement-status (required) Constraints ele-1:All FHIR elements must have a @value or children Mappings rim:n/a rim:N/A

Example (XML view)

Example of a SpO2 Numeric Observation

<Observation>
    <id value="632" />
    <meta>
        <profile value="http://devices.fhir.org/StructureDefinition/NumericObservation" />
        <profile value="http://hl7.org/fhir/StructureDefinition/oxygensat" />
    </meta>
    <extension url="http://devices.fhir.org/StructureDefinition/observation-measurement-status">
        <valueCode value="questionable" />
    </extension>
    <extension url="http://devices.fhir.org/StructureDefinition/observation-measurement-status">
        <valueCode value="msmt-state-in-alarm" />
    </extension>
    <status value="final" />
    <category>
        <coding>
            <system value="http://hl7.org/fhir/observation-category" />
            <code value="vital-signs" />
            <display value="Vital Signs" />
        </coding>
    </category>
    <code>
        <coding>
            <system value="http://loinc.org" />
            <code value="59408-5" />
            <display value="Oxygen saturation in Arterial blood by Pulse oximetry" />
        </coding>
        <coding>
            <system value="urn:iso:std:iso:11073:10101" />
            <code value="150456" />
            <display value="MDC_PULS_OXIM_SAT_O2" />
        </coding>
    </code>
    <subject>
        <reference value="Patient/371" />
    </subject>
    <effectiveDateTime value="2017-06-02T11:04:48+02:00" />
    <valueQuantity>
        <value value="88" />
        <unit value="%" />
        <system value="http://unitsofmeasure.org" />
        <code value="%" />
    </valueQuantity>
    <device>
        <reference value="DeviceMetric/222" />
    </device>
</Observation>

Example (JSON view)

Example of a SpO2 Numeric Observation

{
    "resourceType":"Observation",
    "id":"632",
    "meta":{
        "profile": [
            "http://devices.fhir.org/StructureDefinition/NumericObservation",
            "http://hl7.org/fhir/StructureDefinition/oxygensat"
        ]
    },
    "extension": [
        {
            "url":"http://devices.fhir.org/StructureDefinition/observation-measurement-status",
            "valueCode":"questionable"
        },
        {
            "url":"http://devices.fhir.org/StructureDefinition/observation-measurement-status",
            "valueCode":"msmt-state-in-alarm"
        }
    ],
    "status":"final",
    "category": [
        {
            "coding": [
                {
                    "system":"http://hl7.org/fhir/observation-category",
                    "code":"vital-signs",
                    "display":"Vital Signs"
                }
            ]
        }
    ],
    "code":{
        "coding": [
            {
                "system":"http://loinc.org",
                "code":"59408-5",
                "display":"Oxygen saturation in Arterial blood by Pulse oximetry"
            },
            {
                "system":"urn:iso:std:iso:11073:10101",
                "code":"150456",
                "display":"MDC_PULS_OXIM_SAT_O2"
            }
        ]
    },
    "subject":{
        "reference":"Patient/371"
    },
    "effectiveDateTime":"2017-06-02T11:04:48+02:00",
    "valueQuantity":{
        "value":"88",
        "unit":"%",
        "system":"http://unitsofmeasure.org",
        "code":"%"
    },
    "device":{
        "reference":"DeviceMetric/222"
    }
}