<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="message-transport"/><meta><lastUpdated value="2026-03-18T20:57:50.446+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem message-transport</b></p><a name="message-transport"> </a><a name="hcmessage-transport"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/message-transport</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">http<a name="message-transport-http"> </a></td><td>HTTP</td><td>The application sends or receives messages using HTTP POST (may be over http: or https:).</td></tr><tr><td style="white-space:nowrap">ftp<a name="message-transport-ftp"> </a></td><td>FTP</td><td>The application sends or receives messages using File Transfer Protocol.</td></tr><tr><td style="white-space:nowrap">mllp<a name="message-transport-mllp"> </a></td><td>MLLP</td><td>The application sends or receives messages using HL7's Minimal Lower Level Protocol.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="fhir"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueCode value="normative"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="5"/></extension><url value="http://hl7.org/fhir/message-transport"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.1080"/></identifier><version value="6.0.0-ballot4"/><name value="MessageTransport"/><title value="Message Transport"/><status value="active"/><experimental value="false"/><date value="2020-12-28T16:55:11+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="The protocol used for message transport."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/message-transport"/><content value="complete"/><concept><code value="http"/><display value="HTTP"/><definition value="The application sends or receives messages using HTTP POST (may be over http: or https:)."/></concept><concept><code value="ftp"/><display value="FTP"/><definition value="The application sends or receives messages using File Transfer Protocol."/></concept><concept><code value="mllp"/><display value="MLLP"/><definition value="The application sends or receives messages using HL7's Minimal Lower Level Protocol."/></concept></CodeSystem>