HL7 v2.6 Vocabulary
0.2.0 - ci-build

HL7 v2.6 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v26/ and changes regularly. See the Directory of published versions

## : Allow Substitution Codes (2.6 - 1.1.0) - XML Representation

Active as of 2026-03-13

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    <CodeSystem xmlns="http://hl7.org/fhir">
      <id value="allowSubstitution"/>
      <text>
        <status value="generated"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><ul><li>Include all codes defined in <a href="CodeSystem-allowSubstitution.html"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/allowSubstitution</code></a></li></ul></div>
      </text>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated">
        <valueString value="2.6"/>
      </extension>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory">
        <valueString value="generate correct history somehow"/>
      </extension>
      <extension
                 url="http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo">
        <valueString value="0279"/>
      </extension>
      <url
           value="http://terminology.hl7.org/v2plusvocab/CodeSystem/allowSubstitution"/>
      <identifier>
        <system value="urn:ietf:rfc:3986"/>
        <value value="urn:oid:2.16.840.1.113883.18.172"/>
      </identifier>
      <identifier>
        <system value="urn:ietf:rfc:3986"/>
        <value value="http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0279"/>
      </identifier>
      <version value="1.1.0"/>
      <name value="AllowSubstitution"/>
      <title value="Allow Substitution Codes (2.6 - 1.1.0)"/>
      <status value="active"/>
      <experimental value="true"/>
      <date value="2026-03-13T11:09:09+00:00"/>
      <publisher value="HL7/FO"/>
      <contact>
        <name value="HL7/FO"/>
        <telecom>
          <system value="url"/>
          <value value="http://www.hl7.org"/>
        </telecom>
      </contact>
      <description
                   value="Code system of concepts used to indicate whether the appointment resource may be substituted for another by the entity assigned to fulfill the appointment.  Used in HL7 Version 2.x messaging in the AIS and AIG segments."/>
      <copyright value="HL7 Inc., 2026"/>
      <caseSensitive value="false"/>
      <compositional value="false"/>
      <content value="complete"/>
      <property>
        <code value="versionIntroduced"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced"/>
        <description value="version when was this code introduced"/>
        <type value="string"/>
      </property>
      <property>
        <code value="versionDeprecated"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated"/>
        <description value="version when was this code deprecated"/>
        <type value="string"/>
      </property>
      <property>
        <code value="status"/>
        <uri value="http://hl7.org/fhir/concept-properties#status"/>
        <description
                     value="A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired"/>
        <type value="code"/>
      </property>
      <property>
        <code value="comment"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment"/>
        <description
                     value="A string that provides additional detail pertinent to the use or understanding of the concept"/>
        <type value="string"/>
      </property>
      <property>
        <code value="usage"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage"/>
        <description value="usage notes for this code"/>
        <type value="string"/>
      </property>
      <property>
        <code value="modified"/>
        <uri
             value="http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified"/>
        <description value="date of last modification"/>
        <type value="dateTime"/>
      </property>
      <concept>
        <code value="Confirm"/>
        <display
                 value="Contact the Placer Contact Person prior to making any substitutions of this resource"/>
        <definition
                    value="Contact the Placer Contact Person prior to making any substitutions of this resource"/>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
      <concept>
        <code value="No"/>
        <display value="Substitution of this resource is not allowed"/>
        <definition value="Substitution of this resource is not allowed"/>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
      <concept>
        <code value="Notify"/>
        <display
                 value="Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made"/>
        <definition
                    value="Notify the Placer Contact Person, through normal institutional procedures, that a substitution of this resource has been made"/>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
      <concept>
        <code value="Yes"/>
        <display value="Substitution of this resource is allowed"/>
        <definition value="Substitution of this resource is allowed"/>
        <property>
          <code value="versionIntroduced"/>
          <valueString value="2.3.1"/>
        </property>
      </concept>
    </CodeSystem>