| Source Element | Usage | Target |
| ActorDefinition | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-ActorDefinition |
| ActorDefinition.id | UseExtensionFromAncestor | - |
| ActorDefinition.meta | UseExtensionFromAncestor | - |
| ActorDefinition.implicitRules | UseExtensionFromAncestor | - |
| ActorDefinition.language | UseExtensionFromAncestor | - |
| ActorDefinition.text | UseExtensionFromAncestor | - |
| ActorDefinition.contained | UseExtensionFromAncestor | - |
| ActorDefinition.extension | UseExtensionFromAncestor | - |
| ActorDefinition.modifierExtension | UseExtensionFromAncestor | - |
| ActorDefinition.url | UseExtensionFromAncestor | - |
| ActorDefinition.identifier | UseExtensionFromAncestor | - |
| ActorDefinition.version | UseExtensionFromAncestor | - |
| ActorDefinition.versionAlgorithm[x] | UseExtensionFromAncestor | - |
| ActorDefinition.name | UseExtensionFromAncestor | - |
| ActorDefinition.title | UseExtensionFromAncestor | - |
| ActorDefinition.status | UseExtensionFromAncestor | - |
| ActorDefinition.experimental | UseExtensionFromAncestor | - |
| ActorDefinition.date | UseExtensionFromAncestor | - |
| ActorDefinition.publisher | UseExtensionFromAncestor | - |
| ActorDefinition.contact | UseExtensionFromAncestor | - |
| ActorDefinition.description | UseExtensionFromAncestor | - |
| ActorDefinition.useContext | UseExtensionFromAncestor | - |
| ActorDefinition.jurisdiction | UseExtensionFromAncestor | - |
| ActorDefinition.purpose | UseExtensionFromAncestor | - |
| ActorDefinition.copyright | UseExtensionFromAncestor | - |
| ActorDefinition.copyrightLabel | UseExtensionFromAncestor | - |
| ActorDefinition.type | UseExtensionFromAncestor | - |
| ActorDefinition.documentation | UseExtensionFromAncestor | - |
| ActorDefinition.reference | UseExtensionFromAncestor | - |
| ActorDefinition.capabilities | UseExtensionFromAncestor | - |
| ActorDefinition.derivedFrom | UseExtensionFromAncestor | - |