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

Measurement Status Extension

Canonical URL

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

Extension Definition

Extension	I		Extension	There are no (further) constraints on this element Element id 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 `hasValue() \| (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.id Short description xml:id (or equivalent in JSON) Definition unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Comments Note that FHIR strings may not exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() \| (children().count() > id.count())` Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.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) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() \| (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.url 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 `hasValue() \| (children().count() > id.count())` Fixed value http://devices.fhir.org/StructureDefinition/observation-measurement-status Mappings rim: n/a rim: N/A
valueCode		0..1	codeBinding	Element id Extension.value[x]:valueCode Short description Measurement status Definition Status information about observed values Data type code Binding measurement-status (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() \| (children().count() > id.count())` Mappings rim: n/a rim: N/A

Example (XML view)

Example of a SpO2 Numeric Observation

<Observation xmlns="http://hl7.org/fhir">
    <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"
    }
}