| Source Element | Usage | Target |
| ResearchSubject.id | UseElementSameName | ResearchSubject.id |
| ResearchSubject.meta | UseElementSameName | ResearchSubject.meta |
| ResearchSubject.implicitRules | UseElementSameName | ResearchSubject.implicitRules |
| ResearchSubject.language | UseElementSameName | ResearchSubject.language |
| ResearchSubject.text | UseElementSameName | ResearchSubject.text |
| ResearchSubject.contained | UseElementSameName | ResearchSubject.contained |
| ResearchSubject.extension | UseElementSameName | ResearchSubject.extension |
| ResearchSubject.modifierExtension | UseElementSameName | ResearchSubject.modifierExtension |
| ResearchSubject.identifier | UseElementSameName | ResearchSubject.identifier |
| ResearchSubject.status | UseExtension | http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.status |
| ResearchSubject.period | UseElementSameName | ResearchSubject.period |
| ResearchSubject.study | UseElementSameName | ResearchSubject.study |
| ResearchSubject.individual | UseExtension | http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.individual |
| ResearchSubject.assignedArm | UseExtension | http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.assignedArm |
| ResearchSubject.actualArm | UseExtension | http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.actualArm |
| ResearchSubject.consent | UseElementSameName | ResearchSubject.consent |