2026 US Quality Core Implementation Guide
0.5.0 - cibuild US

2026 US Quality Core Implementation Guide, published by Office of the National Coordinator for Health Information Technology (ONC). This guide is not an authorized publication; it is the continuous build for version 0.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/us-quality-core/ and changes regularly. See the Directory of published versions

## : Observation example - XML Representation

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    <Observation xmlns="http://hl7.org/fhir">
      <id value="example"/>
      <meta>
        <profile
                 value="http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-simple-observation"/>
      </meta>
      <text>
        <status value="extensions"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: Observation example</b></p><a name="example"> </a><a name="hcexample"> </a><div style="display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%"><p style="margin-bottom: 0px"/><p style="margin-bottom: 0px">Profile: <a href="StructureDefinition-us-quality-core-simple-observation.html">US Quality Core Simple Observation</a></p></div><p><b>Observation Body Position</b>: <span title="Codes:{http://snomed.info/sct 33586001}">Sitting position (finding)</span></p><p><b>status</b>: Final</p><p><b>category</b>: <span title="Codes:{http://terminology.hl7.org/CodeSystem/observation-category vital-signs}">Vital Signs</span></p><p><b>code</b>: <span title="Codes:{http://loinc.org 30350-3}">Hemoglobin [Mass/volume] in Venous blood</span></p><p><b>subject</b>: <a href="Patient-example.html">Jim Chalmers  Male, DoB: 1974-12-25 ( Social Security number (use: usual, period: 2001-05-06 --&gt; (ongoing)))</a></p><p><b>encounter</b>: <a href="Encounter-example.html">Encounter: identifier = http://example.org/encounters#ENC-20130404-appendicitis; status = finished; class = inpatient encounter (v3 Code System ActCode#IMP); type = Initial hospital inpatient or observation care, per day, for the evaluation and management of a patient, which requires a medically appropriate history and/or examination and high level of medical decision making. When using total time on the date of the encounter for code selection, 75 minutes must be met or exceeded.; period = 2013-04-04 18:00:00-0400 --&gt; 2013-04-06 11:00:00-0400</a></p><p><b>effective</b>: 2013-04-02 10:30:10+0100 --&gt; 2013-04-05 10:30:10+0100</p><p><b>issued</b>: 2013-04-03 15:30:10+0100</p><p><b>performer</b>: <a href="Practitioner-example.html">Practitioner</a></p><p><b>value</b>: 7.2 g/dl<span style="background: LightGoldenRodYellow"> (Details: UCUM  codeg/dL = 'g/dL')</span></p><p><b>interpretation</b>: <span title="Codes:{http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation L}">Below low normal</span></p><p><b>bodySite</b>: <span title="Codes:{http://snomed.info/sct 308046002}">Superficial forearm vein</span></p><p><b>method</b>: <span title="Codes:{http://snomed.info/sct 120220003}">Injection to forearm</span></p><p><b>derivedFrom</b>: <a href="Observation-example.html">Observation Hemoglobin [Mass/volume] in Venous blood</a></p><blockquote><p><b>component</b></p><p><b>code</b>: <span title="Codes:{http://loinc.org 8480-6}, {http://snomed.info/sct 271649006}">Systolic blood pressure</span></p><p><b>value</b>: 107 mmHg<span style="background: LightGoldenRodYellow"> (Details: UCUM  codemm[Hg] = 'mm[Hg]')</span></p><p><b>interpretation</b>: <span title="Codes:{http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation N}">Normal</span></p></blockquote><blockquote><p><b>component</b></p><p><b>code</b>: <span title="Codes:{http://loinc.org 8462-4}">Diastolic blood pressure</span></p><p><b>value</b>: 60 mmHg<span style="background: LightGoldenRodYellow"> (Details: UCUM  codemm[Hg] = 'mm[Hg]')</span></p><p><b>interpretation</b>: <span title="Codes:{http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation L}">Below low normal</span></p></blockquote></div>
      </text>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/observation-bodyPosition">
        <valueCodeableConcept>
          <coding>
            <system value="http://snomed.info/sct"/>
            <code value="33586001"/>
            <display value="Sitting position (finding)"/>
          </coding>
        </valueCodeableConcept>
      </extension>
      <status value="final"/>
      <category>
        <coding>
          <system
                  value="http://terminology.hl7.org/CodeSystem/observation-category"/>
          <code value="vital-signs"/>
          <display value="Vital Signs"/>
        </coding>
      </category>
      <code>
        <coding>
          <system value="http://loinc.org"/>
          <code value="30350-3"/>
          <display value="Hemoglobin [Mass/volume] in Venous blood"/>
        </coding>
      </code>
      <subject>🔗
        <reference value="Patient/example"/>
      </subject>
      <encounter>🔗
        <reference value="Encounter/example"/>
      </encounter>
      <effectivePeriod>
        <start value="2013-04-02T10:30:10+01:00"/>
        <end value="2013-04-05T10:30:10+01:00"/>
      </effectivePeriod>
      <issued value="2013-04-03T15:30:10+01:00"/>
      <performer>🔗
        <reference value="Practitioner/example"/>
        <display value="Practitioner"/>
      </performer>
      <valueQuantity>
        <value value="7.2"/>
        <unit value="g/dl"/>
        <system value="http://unitsofmeasure.org"/>
        <code value="g/dL"/>
      </valueQuantity>
      <interpretation>
        <coding>
          <system
                  value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/>
          <code value="L"/>
          <display value="Low"/>
        </coding>
        <text value="Below low normal"/>
      </interpretation>
      <bodySite>
        <coding>
          <system value="http://snomed.info/sct"/>
          <code value="308046002"/>
          <display value="Superficial forearm vein"/>
        </coding>
      </bodySite>
      <method>
        <coding>
          <system value="http://snomed.info/sct"/>
          <code value="120220003"/>
          <display value="Injection to forearm"/>
        </coding>
      </method>
      <derivedFrom>🔗
        <reference value="Observation/example"/>
      </derivedFrom>
      <component>
        <code>
          <coding>
            <system value="http://loinc.org"/>
            <code value="8480-6"/>
            <display value="Systolic blood pressure"/>
          </coding>
          <coding>
            <system value="http://snomed.info/sct"/>
            <code value="271649006"/>
            <display value="Systolic blood pressure"/>
          </coding>
        </code>
        <valueQuantity>
          <value value="107"/>
          <unit value="mmHg"/>
          <system value="http://unitsofmeasure.org"/>
          <code value="mm[Hg]"/>
        </valueQuantity>
        <interpretation>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/>
            <code value="N"/>
            <display value="Normal"/>
          </coding>
          <text value="Normal"/>
        </interpretation>
      </component>
      <component>
        <code>
          <coding>
            <system value="http://loinc.org"/>
            <code value="8462-4"/>
            <display value="Diastolic blood pressure"/>
          </coding>
        </code>
        <valueQuantity>
          <value value="60"/>
          <unit value="mmHg"/>
          <system value="http://unitsofmeasure.org"/>
          <code value="mm[Hg]"/>
        </valueQuantity>
        <interpretation>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation"/>
            <code value="L"/>
            <display value="Low"/>
          </coding>
          <text value="Below low normal"/>
        </interpretation>
      </component>
    </Observation>