| Source Element | Usage | Target |
| DeviceAssociation | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-DeviceAssociation |
| DeviceAssociation.id | UseExtensionFromAncestor | - |
| DeviceAssociation.meta | UseExtensionFromAncestor | - |
| DeviceAssociation.implicitRules | UseExtensionFromAncestor | - |
| DeviceAssociation.language | UseExtensionFromAncestor | - |
| DeviceAssociation.text | UseExtensionFromAncestor | - |
| DeviceAssociation.contained | UseExtensionFromAncestor | - |
| DeviceAssociation.extension | UseExtensionFromAncestor | - |
| DeviceAssociation.modifierExtension | UseExtensionFromAncestor | - |
| DeviceAssociation.identifier | UseExtensionFromAncestor | - |
| DeviceAssociation.device | UseExtensionFromAncestor | - |
| DeviceAssociation.category | UseExtensionFromAncestor | - |
| DeviceAssociation.status | UseExtensionFromAncestor | - |
| DeviceAssociation.statusReason | UseExtensionFromAncestor | - |
| DeviceAssociation.subject | UseExtensionFromAncestor | - |
| DeviceAssociation.bodyStructure | UseExtensionFromAncestor | - |
| DeviceAssociation.period | UseExtensionFromAncestor | - |
| DeviceAssociation.operation | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.id | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.extension | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.modifierExtension | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.status | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.operator | UseExtensionFromAncestor | - |
| DeviceAssociation.operation.period | UseExtensionFromAncestor | - |