EventDefinition.url: An absolute URI that is used to identify this event definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this event definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the event definition is stored on different servers. ResearchStudy.url: Canonical identifier for this study resource, represented as a globally unique URI. A URI that is a literal reference TestScript.url: An absolute URI that is used to identify this test script when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this test script is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the test script is stored on different servers. Bundle.link.url: The reference details for the link. TestScript.metadata.link.url: URL to a particular requirement or feature within the FHIR specification. SearchParameter.url: An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this search parameter is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the search parameter is stored on different servers. CapabilityStatement.url: An absolute URI that is used to identify this capability statement when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this capability statement is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the capability statement is stored on different servers. CompartmentDefinition.url: An absolute URI that is used to identify this compartment definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this compartment definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the compartment definition is stored on different servers. ActivityDefinition.url: An absolute URI that is used to identify this activity definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this activity definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the activity definition is stored on different servers. ChargeItemDefinition.url: An absolute URI that is used to identify this charge item definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this charge item definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the charge item definition is stored on different servers. CodeSystem.url: An absolute URI that is used to identify this code system when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this code system is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the code system is stored on different servers. This is used in [Coding](datatypes.html#Coding).system. ConceptMap.url: An absolute URI that is used to identify this concept map when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this concept map is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the concept map is stored on different servers. Library.url: An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this library is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the library is stored on different servers. Bundle.entry.request.url: The URL for this entry, relative to the root (the address to which the request is posted). TestScript.destination.url: The explicit url path of the destination server used in this test script. GraphDefinition.url: An absolute URI that is used to identify this graph definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this graph definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the graph definition is stored on different servers. TestScript.test.action.operation.url: Complete request URL. CapabilityStatement.implementation.url: An absolute base URL for the implementation. This forms the base for REST interfaces as well as the mailbox and document interfaces. TerminologyCapabilities.implementation.url: An absolute base URL for the implementation. Citation.citedArtifact.webLocation.url: The specific URL. EvidenceReport.relatesTo.target.url: Target of the relationship URL. TestScript.common.action.operation.url: Complete request URL. OperationDefinition.url: An absolute URI that is used to identify this operation definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this operation definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the operation definition is stored on different servers. EvidenceReport.url: An absolute URI that is used to identify this EvidenceReport when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this summary is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the summary is stored on different servers. EvidenceVariable.url: An absolute URI that is used to identify this evidence variable when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this evidence variable is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the evidence variable is stored on different servers. TerminologyCapabilities.url: An absolute URI that is used to identify this terminology capabilities when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this terminology capabilities is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the terminology capabilities is stored on different servers. Extension.url: Source of the definition for the extension code - a logical name or a URL. Device.url: A network address on which the device may be contacted directly. Attachment.url: A location where the data can be accessed. SubscriptionTopic.url: An absolute URI that is used to identify this subscription topic when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this subscription topic is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the subscription topic is stored on different servers. Bundle.entry.link.url: The reference details for the link. Group.url: An absolute URI that is used to identify this Group when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this Group is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the Group is stored on different servers. Evidence.url: An absolute URI that is used to identify this evidence when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this summary is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the summary is stored on different servers. NamingSystem.url: An absolute URI that is used to identify this naming system when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this naming system is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the naming system is stored on different servers. ActorDefinition.url: An absolute URI that is used to identify this actor definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this actor definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the actor definition is stored on different servers. TestScript.origin.url: The explicit url path of the origin server used in this test script. Measure.url: An absolute URI that is used to identify this measure when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this measure is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the measure is stored on different servers. ImplementationGuide.url: An absolute URI that is used to identify this implementation guide when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this implementation guide is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the implementation guide is stored on different servers. Composition.url: An absolute URI that is used to identify this Composition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this Composition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the Composition is stored on different servers. CanonicalResource.url: An absolute URI that is used to identify this {{title}} when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this {{title}} is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the {{title}} is stored on different servers. StructureMap.structure.url: The canonical reference to the structure. Contract.url: Canonical identifier for this contract, represented as a URI (globally unique). MessageDefinition.url: The business identifier that is used to reference the MessageDefinition and *is* expected to be consistent from server to server. StructureDefinition.url: An absolute URI that is used to identify this structure definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this structure definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the structure definition is stored on different servers. SpecimenDefinition.url: An absolute URL that is used to identify this SpecimenDefinition when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this SpecimenDefinition is (or will be) published. The URL SHOULD include the major version of the SpecimenDefinition. For more information see Technical and Business Versions. TestScript.teardown.action.operation.url: Complete request URL. ConditionDefinition.url: An absolute URI that is used to identify this condition definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this condition definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the condition definition is stored on different servers. ExampleScenario.url: An absolute URI that is used to identify this example scenario when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this example scenario is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the example scenario is stored on different servers. Citation.url: An absolute URI that is used to identify this citation record when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this summary is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the summary is stored on different servers. Requirements.url: An absolute URI that is used to identify this Requirements when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this Requirements is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the Requirements is stored on different servers. PlanDefinition.url: An absolute URI that is used to identify this plan definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this plan definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the plan definition is stored on different servers. ObservationDefinition.url: An absolute URL that is used to identify this ObservationDefinition when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this ObservationDefinition is (or will be) published. The URL SHOULD include the major version of the ObservationDefinition. For more information see Technical and Business Versions. StructureMap.url: An absolute URI that is used to identify this structure map when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this structure map is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the structure map is stored on different servers. TestScript.setup.action.operation.url: Complete request URL. Questionnaire.url: An absolute URI that is used to identify this questionnaire when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this questionnaire is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the questionnaire is stored on different servers. TestPlan.url: An absolute URI that is used to identify this test plan when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this test plan is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the test plan is stored on different servers. Consent.policyBasis.url: A URL that links to a computable version of the policy the organization will enforce for this Consent. ValueSet.url: An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this value set is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the value set is stored on different servers.

http://hl7.org/fhir/url

http://hl7.org/fhir/_url

http://hl7.org/fhir/w5#id

http://hl7.org/fhir/w5#where

http://hl7.org/fhir/Primitive