<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="headcircum" />
  <text>
    <status value="generated" />
    <div xmlns="http://www.w3.org/1999/xhtml">to do</div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-summary">
    <valueMarkdown value="####Complete Summary of the Mandatory Requirements&#xD;&#xD;1.  One code in `Observation.code` which must have&#xD;    -   a fixed `Observation.code.coding.system`=**'http ://loinc.org'**&#xD;    -   a fixed  `Observation.code.coding.code`= **'8287-5'**&#xD;    -   Other additional codes are allowed - e.g. more specific LOINC&#xD;        Codes, SNOMED CT concepts, system specific codes. All codes&#xD;        SHALL have an system value&#xD;2.  a fixed`Observation.valueQuantity.code` = **'cm', or '[in_i]'**" />
  </extension>
  <url value="http://hl7.org/fhir/StructureDefinition/headcircum" />
  <name value="Vital Signs Profile" />
  <title value="VitalSigns" />
  <status value="draft" />
  <experimental value="false" />
  <date value="2016-03-25" />
  <publisher value="Health Level Seven International (Orders and Observations Workgroup)" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://www.hl7.org/Special/committees/orders/index.cfm Orders and Observations" />
    </telecom>
  </contact>
  <description value="FHIR Head Circumference Profile" />
  <fhirVersion value="3.0.1" />
  <mapping>
    <identity value="workflow" />
    <uri value="http://hl7.org/fhir/workflow" />
    <name value="Workflow Mapping" />
  </mapping>
  <mapping>
    <identity value="sct-concept" />
    <uri value="http://snomed.info/conceptdomain" />
    <name value="SNOMED CT Concept Domain Binding" />
  </mapping>
  <mapping>
    <identity value="v2" />
    <uri value="http://hl7.org/v2" />
    <name value="HL7 v2 Mapping" />
  </mapping>
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <mapping>
    <identity value="w5" />
    <uri value="http://hl7.org/fhir/w5" />
    <name value="W5 Mapping" />
  </mapping>
  <mapping>
    <identity value="sct-attr" />
    <uri value="http://snomed.info/sct" />
    <name value="SNOMED CT Attribute Binding" />
  </mapping>
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/vitalsigns" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation">
      <path value="Observation" />
      <short value="FHIR Head Circumference Profile" />
      <definition value="This profile defines  how to represent Head Circumference observations in FHIR using a standard LOINC code and UCUM units of measure." />
      <min value="0" />
      <max value="*" />
    </element>
    <element id="Observation.code">
      <path value="Observation.code" />
      <short value="Head Circumference" />
      <definition value="Head Circumference." />
      <comment value="additional codes that translate or map to this code are allowed.  For example a more granular LOINC code or code that is used locally in a system." />
      <alias value="Test" />
      <alias value="Name" />
    </element>
    <element id="Observation.code.coding">
      <path value="Observation.code.coding" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="code" />
        </discriminator>
        <ordered value="false" />
        <rules value="open" />
      </slicing>
    </element>
    <element id="Observation.code.coding:headcircumcode">
      <path value="Observation.code.coding" />
      <sliceName value="HeadCircumCode" />
    </element>
    <element id="Observation.code.coding:headcircumcode.system">
      <path value="Observation.code.coding.system" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://loinc.org" />
    </element>
    <element id="Observation.code.coding:headcircumcode.code">
      <path value="Observation.code.coding.code" />
      <type>
        <code value="code" />
      </type>
      <fixedCode value="8287-5" />
    </element>
    <element id="Observation.valueQuantity">
      <path value="Observation.valueQuantity" />
    </element>
    <element id="Observation.valueQuantity.code">
      <path value="Observation.valueQuantity.code" />
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="BodyLengthUnits" />
        </extension>
        <strength value="required" />
        <description value="Common UCUM units for Body Length measures such as Body Height and Head Circumference" />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/ucum-bodylength" />
        </valueSetReference>
      </binding>
    </element>
  </differential>
</StructureDefinition>