HL7 Terminology (THO)
7.2.0 - Publication International flag

This page is part of the HL7 Terminology (v7.2.0: Release) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions

: Evidence Variable Constraint

Active as of 2026-05-04 Maturity Level: 1

Raw xml | Download


<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="evidence-variable-constraint"/>
  <meta>
    <profile
             value="http://hl7.org/fhir/StructureDefinition/shareablecodesystem"/>
  </meta>
  <language value="en"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem evidence-variable-constraint</b></p><a name="evidence-variable-constraint"> </a><a name="hcevidence-variable-constraint"> </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="http://hl7.org/fhir/R5/shareablecodesystem.html">Shareable CodeSystem</a></p></div><p>This case-sensitive code system <code>http://terminology.hl7.org/CodeSystem/evidence-variable-constraint</code> defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style="white-space:nowrap">alphanumeric-only<a name="evidence-variable-constraint-alphanumeric-only"> </a></td><td>Alphanumeric Characters Only</td><td>String values that are restricted to only numbers and letters [A-Za-z0-9].</td></tr><tr><td style="white-space:nowrap">alphanumeric-space-only<a name="evidence-variable-constraint-alphanumeric-space-only"> </a></td><td>Alphanumeric and Space Characters Only</td><td>String values that are restricted to only numbers, letters, and spaces [A-Za-z0-9\s].</td></tr><tr><td style="white-space:nowrap">range-zero-to-one<a name="evidence-variable-constraint-range-zero-to-one"> </a></td><td>Range Zero to One</td><td>Numeric value between 0 and 1, inclusive.</td></tr></table></div>
  </text>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="cds"/>
  </extension>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/>
  </extension>
  <url
       value="http://terminology.hl7.org/CodeSystem/evidence-variable-constraint"/>
  <version value="1.0.0"/>
  <name value="EvidenceVariableConstraint"/>
  <title value="Evidence Variable Constraint"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-05-04T16:55:11+11:00"/>
  <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="A rule or other expectation for data values."/>
  <caseSensitive value="true"/>
  <valueSet
            value="http://terminology.hl7.org/ValueSet/evidence-variable-constraint"/>
  <content value="complete"/>
  <concept>
    <code value="alphanumeric-only"/>
    <display value="Alphanumeric Characters Only"/>
    <definition
                value="String values that are restricted to only numbers and letters [A-Za-z0-9]."/>
  </concept>
  <concept>
    <code value="alphanumeric-space-only"/>
    <display value="Alphanumeric and Space Characters Only"/>
    <definition
                value="String values that are restricted to only numbers, letters, and spaces [A-Za-z0-9\s]."/>
  </concept>
  <concept>
    <code value="range-zero-to-one"/>
    <display value="Range Zero to One"/>
    <definition value="Numeric value between 0 and 1, inclusive."/>
  </concept>
</CodeSystem>