<status value="active"/> <experimental value="true"/> <date value="2026-03-13T11:11:50+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="HL7-defined code system of concept that specify the scheme used when any alternative character sets are specified in the second or later iterations of MSH-18 Character Set, and if any special handling scheme is needed. Used in HL7 Version 2.x messaging in the MSH segment."/> <copyright value="HL7 Inc., 2026"/> <caseSensitive value="true"/> <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="2.3"/> <display value="The character set switching mode specified in HL7 2.5"/> <definition value="The character set switching mode specified in HL7 2.5, section 2.7.2 and section 2.A.46, "XPN - extended person name"."/> <property> <code value="comment"/> <valueString value="Note that the escape sequences used in this mode do not use the ASCII “esc” character, as defined in ISO 2022-1994. They are “HL7 escape sequences” as first defined in HL7 2.3, sec. 2.9.2. (Also, note that sections 2.8.28.6.1and 2.9.2 in HL7 2.3 correspond to sections 2.16.93 and 2.7.2 in HL7 2. 5.)"/> </property> <property> <code value="modified"/> <valueDateTime value="2015-07-13"/> </property> <property> <code value="versionIntroduced"/> <valueString value="2.3.1"/> </property> </concept> <concept> <code value="ISO 2022-1994"/> <display value="This standard is titled "Information Technology - Character Code Structure and Extension Technique"."/> <definition value="This standard is titled "Information Technology - Character Code Structure and Extension Technique". ."/> <property> <code value="comment"/> <valueString value="Note that the escape sequences used in this mode do not use the ASCII “esc” character, as defined in ISO 2022-1994. They are “HL7 escape sequences” as first defined in HL7 2.3, sec. 2.9.2. (Also, note that sections 2.8.28.6.1and 2.9.2 in HL7 2.3 correspond to sections 2.16.93 and 2.7.2 in HL7 2. 5.)"/> </property> <property> <code value="modified"/> <valueDateTime value="2015-07-13"/> </property> <property> <code value="versionIntroduced"/> <valueString value="2.3.1"/> </property> </concept> </CodeSystem>