| Source Element | Usage | Target |
| ObservationDefinition.id | UseElementSameName | ObservationDefinition.id |
| ObservationDefinition.meta | UseElementSameName | ObservationDefinition.meta |
| ObservationDefinition.implicitRules | UseElementSameName | ObservationDefinition.implicitRules |
| ObservationDefinition.language | UseElementSameName | ObservationDefinition.language |
| ObservationDefinition.text | UseElementSameName | ObservationDefinition.text |
| ObservationDefinition.contained | UseElementSameName | ObservationDefinition.contained |
| ObservationDefinition.extension | UseElementSameName | ObservationDefinition.extension |
| ObservationDefinition.modifierExtension | UseElementSameName | ObservationDefinition.modifierExtension |
| ObservationDefinition.category | UseElementSameName | ObservationDefinition.category |
| ObservationDefinition.code | UseElementSameName | ObservationDefinition.code |
| ObservationDefinition.identifier | UseElementSameName | ObservationDefinition.identifier |
| ObservationDefinition.permittedDataType | UseElementSameName | ObservationDefinition.permittedDataType |
| ObservationDefinition.multipleResultsAllowed | UseElementSameName | ObservationDefinition.multipleResultsAllowed |
| ObservationDefinition.method | UseElementSameName | ObservationDefinition.method |
| ObservationDefinition.preferredReportName | UseElementSameName | ObservationDefinition.preferredReportName |
| ObservationDefinition.quantitativeDetails | UseElementSameName | ObservationDefinition.quantitativeDetails |
| ObservationDefinition.quantitativeDetails.id | UseElementSameName | ObservationDefinition.quantitativeDetails.id |
| ObservationDefinition.quantitativeDetails.extension | UseElementSameName | ObservationDefinition.quantitativeDetails.extension |
| ObservationDefinition.quantitativeDetails.modifierExtension | UseElementSameName | ObservationDefinition.quantitativeDetails.modifierExtension |
| ObservationDefinition.quantitativeDetails.customaryUnit | UseElementSameName | ObservationDefinition.quantitativeDetails.customaryUnit |
| ObservationDefinition.quantitativeDetails.unit | UseElementSameName | ObservationDefinition.quantitativeDetails.unit |
| ObservationDefinition.quantitativeDetails.conversionFactor | UseElementSameName | ObservationDefinition.quantitativeDetails.conversionFactor |
| ObservationDefinition.quantitativeDetails.decimalPrecision | UseElementSameName | ObservationDefinition.quantitativeDetails.decimalPrecision |
| ObservationDefinition.qualifiedInterval | UseElementSameName | ObservationDefinition.qualifiedInterval |
| ObservationDefinition.qualifiedInterval.id | UseElementSameName | ObservationDefinition.qualifiedInterval.id |
| ObservationDefinition.qualifiedInterval.extension | UseElementSameName | ObservationDefinition.qualifiedInterval.extension |
| ObservationDefinition.qualifiedInterval.modifierExtension | UseElementSameName | ObservationDefinition.qualifiedInterval.modifierExtension |
| ObservationDefinition.qualifiedInterval.category | UseElementSameName | ObservationDefinition.qualifiedInterval.category |
| ObservationDefinition.qualifiedInterval.range | UseElementSameName | ObservationDefinition.qualifiedInterval.range |
| ObservationDefinition.qualifiedInterval.context | UseElementSameName | ObservationDefinition.qualifiedInterval.context |
| ObservationDefinition.qualifiedInterval.appliesTo | UseElementSameName | ObservationDefinition.qualifiedInterval.appliesTo |
| ObservationDefinition.qualifiedInterval.gender | UseElementSameName | ObservationDefinition.qualifiedInterval.gender |
| ObservationDefinition.qualifiedInterval.age | UseElementSameName | ObservationDefinition.qualifiedInterval.age |
| ObservationDefinition.qualifiedInterval.gestationalAge | UseElementSameName | ObservationDefinition.qualifiedInterval.gestationalAge |
| ObservationDefinition.qualifiedInterval.condition | UseElementSameName | ObservationDefinition.qualifiedInterval.condition |
| ObservationDefinition.validCodedValueSet | UseElementSameName | ObservationDefinition.validCodedValueSet |
| ObservationDefinition.normalCodedValueSet | UseElementSameName | ObservationDefinition.normalCodedValueSet |
| ObservationDefinition.abnormalCodedValueSet | UseElementSameName | ObservationDefinition.abnormalCodedValueSet |
| ObservationDefinition.criticalCodedValueSet | UseElementSameName | ObservationDefinition.criticalCodedValueSet |