This value set includes codes based on the following rules:

 <status value="draft"/> <experimental value="false"/> <date value="2022-05-28T12:47:40+10:00"/> <publisher value="Office of the National Coordinator for Health IT"/> <contact> <telecom> <system value="url"/> <value value="http://healthit.gov"/> </telecom> </contact> <description value="The allowed codes for identifying the ISO 11179 ObjectClass for a particular data element if intended for registration/use within the U.S. Structured Data Capture (SDC) project."/> <copyright value="This value set includes content from LOINC®, which is copyright © 1995 Regenstrief Institute, Inc. and the LOINC Committee, and available at no cost under the license at http://loinc.org/terms-of-use. This resource includes content from SNOMED Clinical Terms® (SNOMED CT®) which is copyright of the International Health Terminology Standards Development Organisation (IHTSDO). Implementers of these specifications must have the appropriate SNOMED CT Affiliate license - for more information contact http://www.snomed.org/snomed-ct/get-snomed-ct or info@snomed.org"/> <compose> <include> <system value="http://snomed.info/sct"/> </include> <include> <system value="http://loinc.org"/> </include> <include> <system value="http://www.nlm.nih.gov/research/umls/rxnorm"/> </include> </compose> </ValueSet>