This value set includes codes based on the following rules:

 <status value="active"/> <experimental value="false"/> <date value="2014-03-26"/> <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="Identifies what sort of change is permitted or has occurred between the item that was ordered/requested and the one that was/will be provided."/> <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"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-SubstitutionCondition"/> <concept> <code value="NOSUB"/> </concept> <concept> <code value="UNCOND"/> </concept> </include> <include> <valueSet value="http://terminology.hl7.org/ValueSet/v3-Conditional"/> </include> <include> <valueSet value="http://terminology.hl7.org/ValueSet/v3-xSubstitutionConditionNoneOrUnconditional"/> </include> </compose> </ValueSet>