The technical details of an endpoint that can be used for electronic services, such as for web services providing XDS.b or a REST endpoint for another FHIR server. This may include any security context information.

The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

The base language in which the resource is written.

Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

An Extension

• value @ url

Set a purpose of use for an mCSD Endpoint or mCSD Organization.

The specific endpoint type. Given that the FHIR R4 Endpoint.connectionType is limited to a one value from a valueSet given by FHIR core and that valueSet includes XCA thus by Extensible rules one is forced to pick that value, we choose to add an additional codeableConcept for a more detailed code(s).

An Extension

For simple single depth XCA communites.

active | suspended | error | off | test.

Should be updated when maintenance or other status changes happen.

A coded value that represents the technical details of the usage of this endpoint, such as what WSDLs should be used in what way. (e.g. XDS.b/DICOM/cds-hook).

For additional connectivity details for the protocol, extensions will be used at this point, as in the XDS example.

A friendly name that this endpoint can be referred to with.

The organization that manages this endpoint, even if technically another organization is hosting this in the cloud.

This element is used when there is a technical problem with the endpoint operation, and would be used to contact for technical support.

This managing organization relationship is potentially independent of if the organization is the custodian/owner of the data available thru this endpoint.

Contact details for a human to contact about the endpoint. The primary use of this for system administrator troubleshooting.

The interval during which the endpoint is expected to be operational.

usually indicating when the endpoint was deployed, and may indicate when this endpoint will be decommissioned.

The list of FormatCode(s) available at this endpoint.

Empty list of FormatCode(s) indicates indeterminate set of FormatCodes supported. For XCA Responding Gateways that do not host data themselves, but rather proxy for other communities, leave this element empty.

The mime type to send the payload in - e.g. application/fhir+xml, application/fhir+json. If the mime type is not specified, then the sender could send any content (including no content depending on the connectionType).

Sending the payload has obvious security consequences. The server is responsible for ensuring that the content is appropriately secured.

The uri that describes the actual end-point to connect to.

XCA SOAP endpoint

Additional headers / information to send as part of the notification.

Exactly what these mean depends on the channel type. The can convey additional information to the recipient and/or meet security requirements.