<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="v3-URLScheme"/>
  <language value="en"/>
  <text>
    <status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><p><b>Properties</b></p><p><b>This code system  defines the following properties for its concepts</b></p><table class="grid"><tr><td><b>Code</b></td><td><b>URI</b></td><td><b>Type</b></td><td><b>Description</b></td></tr><tr><td>Specializes</td><td/><td>Coding</td><td>The child code is a more narrow version of the concept represented by the parent code.  I.e. Every child concept is also a valid parent concept.  Used to allow determination of subsumption.  Must be transitive, irreflexive, antisymmetric.</td></tr><tr><td>Generalizes</td><td/><td>Coding</td><td>Inverse of Specializes.  Only included as a derived relationship.</td></tr><tr><td>internalId</td><td>http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id</td><td>code</td><td>The internal identifier for the concept in the HL7 Access database repository.</td></tr><tr><td>status</td><td>http://hl7.org/fhir/concept-properties#status</td><td>code</td><td>Designation of a concept's state.  Normally is not populated unless the state is retired..</td></tr></table><p><b>Concepts</b></p><p>This case-sensitive code system <code>http://terminology.hl7.org/CodeSystem/v3-URLScheme</code> defines the following codes in a Is-A heirarchy:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td><td><b>internalId</b></td><td><b>status</b></td></tr><tr><td style="white-space:nowrap">cid<a name="v3-URLScheme-cid"> </a></td><td>Content ID</td><td><div><p><strong>Description:</strong> cid: is the most common mechanism used in webservices. A cid: reference points from the SOAP body to other content in the mime package in which the SOAP envelope is wrapped</p>
</div></td><td>22603</td><td>active</td></tr><tr><td style="white-space:nowrap">file<a name="v3-URLScheme-file"> </a></td><td>File</td><td><div><p>Host-specific local file names [RCF 1738]. Note that the file scheme works only for local files. There is little use for exchanging local file names between systems, since the receiving system likely will not be able to access the file.</p>
</div></td><td>14872</td><td>active</td></tr><tr><td style="white-space:nowrap">ftp<a name="v3-URLScheme-ftp"> </a></td><td>FTP</td><td><div><p>The File Transfer Protocol (FTP) [RFC 1738].</p>
</div></td><td>14871</td><td>active</td></tr><tr><td style="white-space:nowrap">hl7-att<a name="v3-URLScheme-hl7-att"> </a></td><td>HL7 Attachment</td><td><div><p><strong>Description:</strong> A reference to an HL7 attachment by it's identifier, which takes the form hl7-att:[II.literal], such as hl7-att:2.1.16.3.9.12345.2.39.3:ABC123</p>
</div></td><td>22604</td><td>active</td></tr><tr><td style="white-space:nowrap">http<a name="v3-URLScheme-http"> </a></td><td>HTTP</td><td><div><p>Hypertext Transfer Protocol [RFC 2068].</p>
<p>http://www.ietf.org/rfc/rfc2068.txt</p>
</div></td><td>14870</td><td>active</td></tr><tr><td style="white-space:nowrap">mailto<a name="v3-URLScheme-mailto"> </a></td><td>Mailto</td><td><div><p>Electronic mail address [RFC 2368]</p>
<p>http://www.ietf.org/rfc/rfc2368.txt</p>
</div></td><td>14869</td><td>active</td></tr><tr><td style="white-space:nowrap">mllp<a name="v3-URLScheme-mllp"> </a></td><td>MLLP</td><td><div><p><strong>Description:</strong> Mimimal Lower Layer Protocol. See Transport Specification: MLLP, Release 2 (HL7 V3 Transport specification).</p>
</div></td><td>21461</td><td>active</td></tr><tr><td style="white-space:nowrap">nfs<a name="v3-URLScheme-nfs"> </a></td><td>NFS</td><td><div><p>Network File System protocol [RFC 2224]. Some sites use NFS servers to share data files.</p>
<p>http://www.ietf.org/rfc/rfc2224.txt</p>
</div></td><td>14873</td><td>active</td></tr><tr><td style="white-space:nowrap">tel<a name="v3-URLScheme-tel"> </a></td><td>Telephone</td><td><div><p>A voice telephone number [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].</p>
</div></td><td>14867</td><td>active</td></tr><tr><td style="white-space:nowrap">telnet<a name="v3-URLScheme-telnet"> </a></td><td>Telnet</td><td><div><p>Reference to interactive sessions [RFC 1738]. Some sites, (e.g., laboratories) have TTY based remote query sessions that can be accessed through telnet.</p>
<p>http://www.ietf.org/rfc/rfc1738.txt</p>
</div></td><td>14874</td><td>active</td></tr><tr style="background-color: #ffeeee"><td style="white-space:nowrap">fax<a name="v3-URLScheme-fax"> </a></td><td>Fax</td><td><div><p>A telephone number served by a fax device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].</p>
</div></td><td>14868</td><td>retired</td></tr><tr style="background-color: #ffeeee"><td style="white-space:nowrap">modem<a name="v3-URLScheme-modem"> </a></td><td>Modem</td><td><div><p>A telephone number served by a modem device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].</p>
</div></td><td>14875</td><td>retired</td></tr><tr style="background-color: #ffeeee"><td style="white-space:nowrap">x-text-fax<a name="v3-URLScheme-x-text-fax"> </a></td><td>Fax</td><td><div><p><strong>Description:</strong> A telephone number served by a fax device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt]</p>
</div></td><td>22605</td><td>retired</td></tr><tr style="background-color: #ffeeee"><td style="white-space:nowrap">x-text-tel<a name="v3-URLScheme-x-text-tel"> </a></td><td>Text Telephone</td><td><div><p><strong>Description:</strong> A text telephone - a telephone which is designed for use by the hearing-impaired</p>
<p><strong>Notes:</strong></p>
<ul>
<li>x-text-fax is required to replace fax, since this has been deprecated by W3C.</li>
<li>hl7-att is associated with a series of rules that must be followed. These rules are documented in Datatypes R2</li>
<li>This domain is external and extensible, so documenting this simply clarifies consistent usage for these use cases.</li>
</ul>
</div></td><td>22606</td><td>retired</td></tr></table></div>
  </text>
  <url value="http://terminology.hl7.org/CodeSystem/v3-URLScheme"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.5.143"/>
  </identifier>
  <version value="3.0.0"/>
  <name value="URLScheme"/>
  <title value="Universal Resource Locator Scheme"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2019-03-20"/>
  <publisher value="Health Level Seven International"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="hq@HL7.org"/>
    </telecom>
  </contact>
  <description value="A Universal Resource Locator (URL) is a type of telecommunications address specified as Internet standard RFC 1738 \[http://www.isi.edu/in-notes/rfc1738.txt\]. The URL specifies the protocol and the contact point defined by that protocol for the resource."/>
  <copyright value="This material derives from the HL7 Terminology THO. THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license"/>
  <caseSensitive value="true"/>
  <hierarchyMeaning value="is-a"/>
  <content value="complete"/>
  <property>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-symmetry">
      <valueCode value="antisymmetric"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-transitivity">
      <valueCode value="transitive"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-reflexivity">
      <valueCode value="irreflexive"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-isNavigable">
      <valueBoolean value="true"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-relationshipKind">
      <valueCode value="Specializes"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-inverseName">
      <valueString value="Generalizes"/>
    </extension>
    <code value="Specializes"/>
    <description value="The child code is a more narrow version of the concept represented by the parent code.  I.e. Every child concept is also a valid parent concept.  Used to allow determination of subsumption.  Must be transitive, irreflexive, antisymmetric."/>
    <type value="Coding"/>
  </property>
  <property>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-symmetry">
      <valueCode value="antisymmetric"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-transitivity">
      <valueCode value="transitive"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-reflexivity">
      <valueCode value="irreflexive"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-isNavigable">
      <valueBoolean value="true"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-relationshipKind">
      <valueCode value="Generalizes"/>
    </extension>
    <extension url="http://terminology.hl7.org/StructureDefinition/ext-mif-relationship-inverseName">
      <valueString value="Specializes"/>
    </extension>
    <code value="Generalizes"/>
    <description value="Inverse of Specializes.  Only included as a derived relationship."/>
    <type value="Coding"/>
  </property>
  <property>
    <code value="internalId"/>
    <uri value="http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id"/>
    <description value="The internal identifier for the concept in the HL7 Access database repository."/>
    <type value="code"/>
  </property>
  <property>
    <code value="status"/>
    <uri value="http://hl7.org/fhir/concept-properties#status"/>
    <description value="Designation of a concept's state.  Normally is not populated unless the state is retired.."/>
    <type value="code"/>
  </property>
  <concept>
    <code value="cid"/>
    <display value="Content ID"/>
    <definition value="**Description:** cid: is the most common mechanism used in webservices. A cid: reference points from the SOAP body to other content in the mime package in which the SOAP envelope is wrapped"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="22603"/>
    </property>
  </concept>
  <concept>
    <code value="file"/>
    <display value="File"/>
    <definition value="Host-specific local file names \[RCF 1738\]. Note that the file scheme works only for local files. There is little use for exchanging local file names between systems, since the receiving system likely will not be able to access the file."/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14872"/>
    </property>
  </concept>
  <concept>
    <code value="ftp"/>
    <display value="FTP"/>
    <definition value="The File Transfer Protocol (FTP) \[RFC 1738\]."/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14871"/>
    </property>
  </concept>
  <concept>
    <code value="hl7-att"/>
    <display value="HL7 Attachment"/>
    <definition value="**Description:** A reference to an HL7 attachment by it's identifier, which takes the form hl7-att:\[II.literal\], such as hl7-att:2.1.16.3.9.12345.2.39.3:ABC123"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="22604"/>
    </property>
  </concept>
  <concept>
    <code value="http"/>
    <display value="HTTP"/>
    <definition value="Hypertext Transfer Protocol \[RFC 2068\].&#xD;&#xA;&#xD;&#xA;http://www.ietf.org/rfc/rfc2068.txt"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14870"/>
    </property>
  </concept>
  <concept>
    <code value="mailto"/>
    <display value="Mailto"/>
    <definition value="Electronic mail address \[RFC 2368\]&#xD;&#xA;&#xD;&#xA;http://www.ietf.org/rfc/rfc2368.txt"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14869"/>
    </property>
  </concept>
  <concept>
    <code value="mllp"/>
    <display value="MLLP"/>
    <definition value="**Description:** Mimimal Lower Layer Protocol. See Transport Specification: MLLP, Release 2 (HL7 V3 Transport specification)."/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="21461"/>
    </property>
  </concept>
  <concept>
    <code value="nfs"/>
    <display value="NFS"/>
    <definition value="Network File System protocol \[RFC 2224\]. Some sites use NFS servers to share data files.&#xD;&#xA;&#xD;&#xA;http://www.ietf.org/rfc/rfc2224.txt"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14873"/>
    </property>
  </concept>
  <concept>
    <code value="tel"/>
    <display value="Telephone"/>
    <definition value="A voice telephone number \[http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt\]."/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14867"/>
    </property>
  </concept>
  <concept>
    <code value="telnet"/>
    <display value="Telnet"/>
    <definition value="Reference to interactive sessions \[RFC 1738\]. Some sites, (e.g., laboratories) have TTY based remote query sessions that can be accessed through telnet.&#xD;&#xA;&#xD;&#xA;http://www.ietf.org/rfc/rfc1738.txt"/>
    <property>
      <code value="status"/>
      <valueCode value="active"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14874"/>
    </property>
  </concept>
  <concept>
    <code value="fax"/>
    <display value="Fax"/>
    <definition value="A telephone number served by a fax device \[http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt\]."/>
    <property>
      <code value="status"/>
      <valueCode value="retired"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14868"/>
    </property>
  </concept>
  <concept>
    <code value="modem"/>
    <display value="Modem"/>
    <definition value="A telephone number served by a modem device \[http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt\]."/>
    <property>
      <code value="status"/>
      <valueCode value="retired"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="14875"/>
    </property>
  </concept>
  <concept>
    <code value="x-text-fax"/>
    <display value="Fax"/>
    <definition value="**Description:** A telephone number served by a fax device \[http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt\]"/>
    <property>
      <code value="status"/>
      <valueCode value="retired"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="22605"/>
    </property>
  </concept>
  <concept>
    <code value="x-text-tel"/>
    <display value="Text Telephone"/>
    <definition value="**Description:** A text telephone - a telephone which is designed for use by the hearing-impaired&#xD;&#xA;&#xD;&#xA;**Notes:**&#xD;&#xA;&#xD;&#xA; *  x-text-fax is required to replace fax, since this has been deprecated by W3C.&#xD;&#xA; *  hl7-att is associated with a series of rules that must be followed. These rules are documented in Datatypes R2&#xD;&#xA; *  This domain is external and extensible, so documenting this simply clarifies consistent usage for these use cases."/>
    <property>
      <code value="status"/>
      <valueCode value="retired"/>
    </property>
    <property>
      <code value="internalId"/>
      <valueCode value="22606"/>
    </property>
  </concept>
</CodeSystem>