<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="dataelement-stringency" />
  <text>
    <status value="generated" />
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p>The narrative has been removed to reduce the size of the distribution of the Hl7.Fhir.Specification library</p>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-ballot-status">
    <valueString value="Informative" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="oo" />
  </extension>
  <url value="http://hl7.org/fhir/dataelement-stringency" />
  <identifier>
    <system value="urn:ietf:rfc:3986" />
    <value value="urn:oid:2.16.840.1.113883.4.642.1.426" />
  </identifier>
  <version value="3.0.0" />
  <name value="DataElementStringency" />
  <status value="draft" />
  <experimental value="false" />
  <date value="2017-04-03T11:27:53+00:00" />
  <publisher value="HL7 (FHIR Project)" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://hl7.org/fhir" />
    </telecom>
    <telecom>
      <system value="email" />
      <value value="fhir@lists.hl7.org" />
    </telecom>
  </contact>
  <description value="Indicates the degree of precision of the data element definition." />
  <caseSensitive value="true" />
  <valueSet value="http://hl7.org/fhir/ValueSet/dataelement-stringency" />
  <content value="complete" />
  <concept>
    <code value="comparable" />
    <display value="Comparable" />
    <definition value="The data element is sufficiently well-constrained that multiple pieces of data captured according to the constraints of the data element will be comparable (though in some cases, a degree of automated conversion/normalization may be required)." />
    <concept>
      <code value="fully-specified" />
      <display value="Fully Specified" />
      <definition value="The data element is fully specified down to a single value set, single unit of measure, single data type, etc.  Multiple pieces of data associated with this data element are fully comparable." />
    </concept>
    <concept>
      <code value="equivalent" />
      <display value="Equivalent" />
      <definition value="The data element allows multiple units of measure having equivalent meaning; e.g. &quot;cc&quot; (cubic centimeter) and &quot;mL&quot; (milliliter)." />
    </concept>
    <concept>
      <code value="convertable" />
      <display value="Convertable" />
      <definition value="The data element allows multiple units of measure that are convertable between each other (e.g. inches and centimeters) and/or allows data to be captured in multiple value sets for which a known mapping exists allowing conversion of meaning." />
      <concept>
        <code value="scaleable" />
        <display value="Scaleable" />
        <definition value="A convertable data element where unit conversions are different only by a power of 10; e.g. g, mg, kg." />
      </concept>
    </concept>
  </concept>
  <concept>
    <code value="flexible" />
    <display value="Flexible" />
    <definition value="The data element is unconstrained in units, choice of data types and/or choice of vocabulary such that automated comparison of data captured using the data element is not possible." />
  </concept>
</CodeSystem>