This value set includes codes based on the following rules:

This value set excludes codes based on the following rules:

 <status value="active"/> <experimental value="false"/> <date value="2021-03-24T00:00:00.000-06:00"/> <publisher value="HL7, Inc"/> <contact> <telecom> <system value="url"/> <value value="https://github.com/HL7/UTG"/> </telecom> </contact> <description value="Value Set of codes specifying an observation sub-type used with observation type code RSLT (Result)."/> <immutable value="false"/> <copyright value="Copyright HL7. Licensed under creative commons public domain"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v2-0937"/> <version value="2.1.0"/> </include> <exclude> <system value="http://terminology.hl7.org/CodeSystem/v2-0937"/> <version value="2.1.0"/> <concept> <code value="AOE"/> <display value="Ask at Order Entry"/> </concept> <concept> <code value="ASC"/> <display value="Ask at Specimen Collection"/> </concept> </exclude> </compose> </ValueSet>