| Source Element | Usage | Target |
| Subscription.id | UseElementSameName | Subscription.id |
| Subscription.meta | UseElementSameName | Subscription.meta |
| Subscription.implicitRules | UseElementSameName | Subscription.implicitRules |
| Subscription.language | UseElementSameName | Subscription.language |
| Subscription.text | UseElementSameName | Subscription.text |
| Subscription.contained | UseElementSameName | Subscription.contained |
| Subscription.extension | UseElementSameName | Subscription.extension |
| Subscription.modifierExtension | UseElementSameName | Subscription.modifierExtension |
| Subscription.identifier | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.identifier |
| Subscription.name | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.name |
| Subscription.status | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.status |
| Subscription.topic | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.topic |
| Subscription.contact | UseElementSameName | Subscription.contact |
| Subscription.end | UseElementSameName | Subscription.end |
| Subscription.managingEntity | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.managingEntity |
| Subscription.reason | UseElementSameName | Subscription.reason |
| Subscription.filterBy | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.filterBy |
| Subscription.filterBy.id | UseExtensionFromAncestor | - |
| Subscription.filterBy.extension | UseExtensionFromAncestor | - |
| Subscription.filterBy.modifierExtension | UseExtensionFromAncestor | - |
| Subscription.filterBy.resourceType | UseExtensionFromAncestor | - |
| Subscription.filterBy.filterParameter | UseExtensionFromAncestor | - |
| Subscription.filterBy.comparator | UseExtensionFromAncestor | - |
| Subscription.filterBy.modifier | UseExtensionFromAncestor | - |
| Subscription.filterBy.value | UseExtensionFromAncestor | - |
| Subscription.channelType | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.channelType |
| Subscription.endpoint | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.endpoint |
| Subscription.parameter | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.parameter |
| Subscription.parameter.id | UseExtensionFromAncestor | - |
| Subscription.parameter.extension | UseExtensionFromAncestor | - |
| Subscription.parameter.modifierExtension | UseExtensionFromAncestor | - |
| Subscription.parameter.name | UseExtensionFromAncestor | - |
| Subscription.parameter.value | UseExtensionFromAncestor | - |
| Subscription.heartbeatPeriod | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.heartbeatPeriod |
| Subscription.timeout | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.timeout |
| Subscription.contentType | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.contentType |
| Subscription.content | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.content |
| Subscription.maxCount | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-Subscription.maxCount |