This is the ValueSet that contains all the codes in QICore Observation Body Position (http://hl7.org/fhir/us/qicore/ValueSet/qicore-observation-body-position) and QICore Observation Body Position (http://hl7.org/fhir/us/qicore/ValueSet/qicore-observation-body-position). E.g. what you have to deal with if you get resources containing codes in either of them