A Capability Statement documents a set of capabilities (behaviors) of a FHIR Server or Client for a particular version of FHIR that may be used as a statement of actual server functionality or a statement of required or desired server implementation.

Applications may implement multiple versions (see Managing Multiple Versions, and the $versions operation). If they do, then a CapabilityStatement describes the system's support for a particular version of FHIR, and the server will have multiple statements, one for each version.

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 its narrative along with other profiles, value sets, etc.

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.

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

DSTU2: Conformance.acceptUnknown (new:code)

Element Conformance.acceptUnknown has a context of CapabilityStatement based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.acceptUnknown has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). Unknown elements in a resource can only arise as later versions of the specification are published, because this is the only place where such elements can be defined. Hence accepting unknown elements is about inter-version compatibility. Applications are recommended to accept unknown extensions and elements ('both'), but this is not always possible.

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The status of this capability statement. Enables tracking the life-cycle of the content.

Allows filtering of capability statements that are appropriate for use versus not.This is not intended for use with actual capability statements, but where capability statements are used to describe possible or desired systems.

See guidance around (not) making local changes to elements here.

The lifecycle status of an artifact.

The date (and optionally time) when the capability statement was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the capability statement changes.

The date is often not tracked until the resource is published, but may be present on draft content. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the capability statement. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

See guidance around (not) making local changes to elements here.

The way that this statement is intended to be used, to describe an actual running instance of software, a particular product (kind, not instance of software) or a class of implementation (e.g. a desired purchase).

How a capability statement is intended to be used.

Allow searching the 3 modes.

Software that is covered by this capability statement. It is used when the capability statement describes the capabilities of a particular software version, independent of an installation.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Name the software is known by.

Identifies a specific implementation instance that is described by the capability statement - i.e. a particular installation, rather than the capabilities of a software program.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Information about the specific installation that this capability statement relates to.

The version of the FHIR specification that this CapabilityStatement describes (which SHALL be the same as the FHIR version of the CapabilityStatement itself). There is no default value.

Servers may implement multiple versions (see Managing Multiple Versions, and the $versions operation). If they do, and the CapabilityStatement is requested from the server, then this fhirVersion will be either the version requested, or the server's default version.

All published FHIR Versions.

A list of the formats supported by this implementation using their content types.

"xml", "json" and "ttl" are allowed, which describe the simple encodings described in the specification (and imply appropriate bundle support). Otherwise, mime types are legal here.

The mime type of an attachment. Any valid mime type is allowed.

A definition of the restful capabilities of the solution, if any.

Multiple repetitions allow definition of both client and/or server behaviors or possibly behaviors under different configuration settings (for software or requirements statements).

An Extension

DSTU2: Conformance.rest.transactionMode (new:code)

Element Conformance.rest.transactionMode has a context of CapabilityStatement.rest based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.transactionMode has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Identifies whether this portion of the statement is describing the ability to initiate or receive restful operations.

The mode of a RESTful capability statement.

A document definition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Mode of this document declaration - whether an application is a producer or consumer.

Whether the application produces or consumes documents.

A profile on the document Bundle that constrains which resources are present, and their contents.

The profile is actually on the Bundle.

An Extension

DSTU2: Conformance.document.profile additional types (Reference(http://hl7.org/fhir/StructureDefinition/StructureDefinition)) additional types from child elements (display, reference)

Element Conformance.document.profile is mapped to FHIR R5 element CapabilityStatement.document.profile as SourceIsBroaderThanTarget. The mappings for Conformance.document.profile do not cover the following types: Reference. The mappings for Conformance.document.profile do not cover the following types based on type expansion: display, reference. The first resource is the document resource.

DSTU2: Conformance.meta additional types (Meta) additional types from child elements (lastUpdated, profile, security, tag, versionId)

Element Conformance.meta is mapped to FHIR R5 element CapabilityStatement.meta as SourceIsBroaderThanTarget. The mappings for Conformance.meta do not cover the following types: Meta. The mappings for Conformance.meta do not cover the following types based on type expansion: lastUpdated, profile, security, tag, versionId.

DSTU2: Conformance.text additional types (Narrative) additional types from child elements (div, status)

Element Conformance.text is mapped to FHIR R5 element CapabilityStatement.text as SourceIsBroaderThanTarget. The mappings for Conformance.text do not cover the following types: Narrative. The mappings for Conformance.text do not cover the following types based on type expansion: div, status. Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative.

DSTU2: Conformance.acceptUnknown (new:code)

Element Conformance.acceptUnknown has a context of CapabilityStatement based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.acceptUnknown has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). Unknown elements in a resource can only arise as later versions of the specification are published, because this is the only place where such elements can be defined. Hence accepting unknown elements is about inter-version compatibility. Applications are recommended to accept unknown extensions and elements ('both'), but this is not always possible.

DSTU2: Conformance.contact.name additional types (string) additional types from child elements (value)

Element Conformance.contact.name is mapped to FHIR R5 element CapabilityStatement.contact as RelatedTo. The mappings for Conformance.contact.name do not cover the following types: string. The mappings for Conformance.contact.name do not cover the following types based on type expansion: value. If there is no named individual, the telecom is for the organization as a whole.

DSTU2: Conformance.contact.telecom additional types (ContactPoint) additional types from child elements (period, rank, system, use, value)

Element Conformance.contact.telecom is mapped to FHIR R5 element CapabilityStatement.contact as SourceIsBroaderThanTarget. The mappings for Conformance.contact.telecom do not cover the following types: ContactPoint. The mappings for Conformance.contact.telecom do not cover the following types based on type expansion: period, rank, system, use, value.

DSTU2: Conformance.rest.transactionMode (new:code)

Element Conformance.rest.transactionMode has a context of CapabilityStatement.rest based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.transactionMode has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

DSTU2: Conformance.rest.security.certificate (new:BackboneElement)

Element Conformance.rest.security.certificate has a context of CapabilityStatement.rest.security based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.security.certificate has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

DSTU2: Conformance.rest.resource.profile additional types (Reference(http://hl7.org/fhir/StructureDefinition/StructureDefinition)) additional types from child elements (display, reference)

Element Conformance.rest.resource.profile is mapped to FHIR R5 element CapabilityStatement.rest.resource.profile as SourceIsBroaderThanTarget. Element Conformance.rest.resource.profile is mapped to FHIR R5 element CapabilityStatement.rest.resource.supportedProfile as RelatedTo. The mappings for Conformance.rest.resource.profile do not cover the following types: Reference. The mappings for Conformance.rest.resource.profile do not cover the following types based on type expansion: display, reference. The profile applies to all resources of this type - i.e. it is the superset of what is supported by the system.

DSTU2: Conformance.rest.resource.type additional codes

Element Conformance.rest.resource.type is mapped to FHIR R5 element CapabilityStatement.rest.resource.type as RelatedTo. The mappings for Conformance.rest.resource.type do not allow expression of the necessary codes, per the bindings on the source and target.

DSTU2: Conformance.profile additional types (Reference(http://hl7.org/fhir/StructureDefinition/StructureDefinition)) additional types from child elements (display, reference)

Element Conformance.profile is mapped to FHIR R5 element CapabilityStatement.rest.resource.supportedProfile as SourceIsBroaderThanTarget. The mappings for Conformance.profile do not cover the following types: Reference. The mappings for Conformance.profile do not cover the following types based on type expansion: display, reference. Supported profiles are different to the profiles that apply to a particular resource in rest.resource.profile. The resource profile is a general statement of what features of the resource are supported overall by the system - the sum total of the facilities it supports. A supported profile is a deeper statement about the functionality of the data and services provided by the server (or used by the client). A typical case is a laboratory system that produces a set of different reports - this is the list of types of data that it publishes. A key aspect of declaring profiles here is the question of how the client converts knowledge that the server publishes this data into working with the data; the client can inspect individual resources to determine whether they conform to a particular profile, but how does it find the ones that does? It does so by searching using the _profile parameter, so any resources listed here must be valid values for the _profile resource (using the identifier in the target profile). Typical supported profiles cross resource types to describe a network of related resources, so they are listed here rather than by resource. However, they do not need to describe more than one resource.

DSTU2: Conformance.rest.resource.interaction.code

Element Conformance.rest.resource.interaction.code is mapped to FHIR R5 element CapabilityStatement.rest.resource.interaction.code as SourceIsBroaderThanTarget.

DSTU2: Conformance.rest.resource.searchParam.target (new:code)

Element Conformance.rest.resource.searchParam.target has a context of CapabilityStatement.rest.resource.searchParam based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.resource.searchParam.target has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). This SHALL be the same as or a proper subset of the resources listed in the search parameter definition.

DSTU2: Conformance.rest.resource.searchParam.modifier (new:code)

Element Conformance.rest.resource.searchParam.modifier has a context of CapabilityStatement.rest.resource.searchParam based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.resource.searchParam.modifier has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

DSTU2: Conformance.rest.resource.searchParam.chain (new:string)

Element Conformance.rest.resource.searchParam.chain has a context of CapabilityStatement.rest.resource.searchParam based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.resource.searchParam.chain has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). Systems are not required to list all the chain names they support, but if they don't list them, clients may not know to use them.

DSTU2: Conformance.rest.operation.definition additional types (Reference(http://hl7.org/fhir/StructureDefinition/OperationDefinition)) additional types from child elements (display, reference)

Element Conformance.rest.operation.definition is mapped to FHIR R5 element CapabilityStatement.rest.resource.operation.definition as SourceIsBroaderThanTarget. The mappings for Conformance.rest.operation.definition do not cover the following types: Reference. The mappings for Conformance.rest.operation.definition do not cover the following types based on type expansion: display, reference. This can be used to build an HTML form to invoke the operation, for instance.

DSTU2: Conformance.messaging.event (new:BackboneElement)

Element Conformance.messaging.event has a context of CapabilityStatement.messaging based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.messaging.event has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). The same event may be listed up to two times - once as sender and once as receiver.

DSTU2: Conformance.document.profile additional types (Reference(http://hl7.org/fhir/StructureDefinition/StructureDefinition)) additional types from child elements (display, reference)

Element Conformance.document.profile is mapped to FHIR R5 element CapabilityStatement.document.profile as SourceIsBroaderThanTarget. The mappings for Conformance.document.profile do not cover the following types: Reference. The mappings for Conformance.document.profile do not cover the following types based on type expansion: display, reference. The first resource is the document resource.

A Capability Statement documents a set of capabilities (behaviors) of a FHIR Server or Client for a particular version of FHIR that may be used as a statement of actual server functionality or a statement of required or desired server implementation.

Applications may implement multiple versions (see Managing Multiple Versions, and the $versions operation). If they do, then a CapabilityStatement describes the system's support for a particular version of FHIR, and the server will have multiple statements, one for each version.

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

Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.

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.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.meta additional types (Meta) additional types from child elements (lastUpdated, profile, security, tag, versionId)

Element Conformance.meta is mapped to FHIR R5 element CapabilityStatement.meta as SourceIsBroaderThanTarget. The mappings for Conformance.meta do not cover the following types: Meta. The mappings for Conformance.meta do not cover the following types based on type expansion: lastUpdated, profile, security, tag, versionId.

The version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted.

The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes.

When the resource last changed - e.g. when the version changed.

This element is generally omitted in instances submitted in a PUT or POST. Instead, it is populated in the response instance and when retrieving information using a GET. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a read interaction.

A uri that identifies the source system of the resource. This provides a minimal amount of Provenance information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc.

The exact use of the source (and the possible implied Provenance.entity.role and agent.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used. The source may correspond to Provenance.entity.what[x] or Provenance.agent.who[x], though it may be a more general or abstract reference.

This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL.

A list of profiles (references to StructureDefinition resources) that this resource claims to conform to. The URL is a reference to StructureDefinition.url.

It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time. The list of profile URLs is a set.

Security labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure.

The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored.

Unless not suitable, these codes SHALL be taken from AllSecurityLabels
(extensible to http://hl7.org/fhir/ValueSet/security-labels|5.0.0)

Security Labels from the Healthcare Privacy and Security Classification System.

Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource.

The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored.

Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".

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 its 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).

IETF language tag for a human language

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 a 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.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.text additional types (Narrative) additional types from child elements (div, status)

Element Conformance.text is mapped to FHIR R5 element CapabilityStatement.text as SourceIsBroaderThanTarget. The mappings for Conformance.text do not cover the following types: Narrative. The mappings for Conformance.text do not cover the following types based on type expansion: div, status. Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative.

The status of the narrative - whether it's entirely generated (from just the defined data or the extensions too), or whether a human authored it and it may contain additional data.

The status of a resource narrative.

The actual narrative content, a stripped down version of XHTML.

The contents of the html element are an XHTML fragment containing only the basic html formatting elements described in chapters 7-11 and 15 of the HTML 4.0 standard, <a> elements (either name or href), images and internally contained stylesheets. The XHTML content SHALL NOT contain a head, a body, external stylesheet references, scripts, forms, base/link/xlink, frames, iframes and objects.

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.

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

DSTU2: Conformance.acceptUnknown (new:code)

Element Conformance.acceptUnknown has a context of CapabilityStatement based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.acceptUnknown has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). Unknown elements in a resource can only arise as later versions of the specification are published, because this is the only place where such elements can be defined. Hence accepting unknown elements is about inter-version compatibility. Applications are recommended to accept unknown extensions and elements ('both'), but this is not always possible.

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred. Multiple instances may share the same URL if they have a distinct version.

The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author. Considerations for making this decision are found in Technical and Business Versions.

In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the meta.source element to indicate where the current master source of the resource can be found.

Allows the capability statement to be referenced by a single globally unique identifier.

A formal identifier that is used to identify this CapabilityStatement when it is represented in other formats, or referenced in a specification, model, design or an instance.

Allows externally provided and/or usable business identifiers to be easily associated with the module.

The identifier that is used to identify this version of the capability statement when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the capability statement author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.

There may be different capability statement instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the capability statement with the format [url]|[version]. The version SHOULD NOT contain a '#' - see Business Version.

Indicates the mechanism used to compare versions to determine which is more current.

If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined.

A natural language name identifying the capability statement. This name should be usable as an identifier for the module by machine processing applications such as code generation.

The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.

Support human navigation and code generation.

A short, descriptive, user-friendly title for the capability statement.

This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

The status of this capability statement. Enables tracking the life-cycle of the content.

Allows filtering of capability statements that are appropriate for use versus not.This is not intended for use with actual capability statements, but where capability statements are used to describe possible or desired systems.

See guidance around (not) making local changes to elements here.

The lifecycle status of an artifact.

A Boolean value to indicate that this capability statement is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.

Allows filtering of capability statements that are appropriate for use versus not.

Enables experimental content to be developed following the same lifecycle that would be used for a production-level capability statement.

The date (and optionally time) when the capability statement was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the capability statement changes.

The date is often not tracked until the resource is published, but may be present on draft content. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the capability statement. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

See guidance around (not) making local changes to elements here.

The name of the organization or individual responsible for the release and ongoing maintenance of the capability statement.

Usually an organization but may be an individual. The publisher (or steward) of the capability statement is the organization or individual primarily responsible for the maintenance and upkeep of the capability statement. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the capability statement. This item SHOULD be populated unless the information is available from context.

Helps establish the "authority/credibility" of the capability statement. May also allow for contact.

Contact details to assist a user in finding and communicating with the publisher.

May be a web site, an email address, a telephone number, etc.

See guidance around (not) making local changes to elements here.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.contact.name additional types (string) additional types from child elements (value)

Element Conformance.contact.name is mapped to FHIR R5 element CapabilityStatement.contact as RelatedTo. The mappings for Conformance.contact.name do not cover the following types: string. The mappings for Conformance.contact.name do not cover the following types based on type expansion: value. If there is no named individual, the telecom is for the organization as a whole.

DSTU2: Conformance.contact.telecom additional types (ContactPoint) additional types from child elements (period, rank, system, use, value)

Element Conformance.contact.telecom is mapped to FHIR R5 element CapabilityStatement.contact as SourceIsBroaderThanTarget. The mappings for Conformance.contact.telecom do not cover the following types: ContactPoint. The mappings for Conformance.contact.telecom do not cover the following types based on type expansion: period, rank, system, use, value.

The name of an individual to contact.

If there is no named individual, the telecom information is for the organization as a whole.

The contact details for the individual (if a name was provided) or the organization.

A free text natural language description of the capability statement from a consumer's perspective. Typically, this is used when the capability statement describes a desired rather than an actual solution, for example as a formal expression of requirements as part of an RFP.

This description can be used to capture details such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the capability statement as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the capability statement is presumed to be the predominant language in the place the capability statement was created).This does not need to be populated if the description is adequately implied by the software or implementation details.

The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate capability statement instances.

When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

Assist in searching for appropriate content.

A legal or geographic region in which the capability statement is intended to be used.

It may be possible for the capability statement to be used in jurisdictions other than those for which it was originally designed or intended.

DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'jurisdiction' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#jurisdiction and useContext.valueCodeableConcept indicating the jurisdiction.)

Countries and regions within which this artifact is targeted for use.

Explanation of why this capability statement is needed and why it has been designed as it has.

This element does not describe the usage of the capability statement. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this capability statement.

A copyright statement relating to the capability statement and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the capability statement.

...

Consumers must be able to determine any legal restrictions on the use of the capability statement and/or its content.

A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved').

The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.

Defines the content expected to be rendered in all representations of the artifact.

The way that this statement is intended to be used, to describe an actual running instance of software, a particular product (kind, not instance of software) or a class of implementation (e.g. a desired purchase).

How a capability statement is intended to be used.

Allow searching the 3 modes.

Reference to a canonical URL of another CapabilityStatement that this software implements. This capability statement is a published API description that corresponds to a business service. The server may actually implement a subset of the capability statement it claims to implement, so the capability statement must specify the full capability details.

HL7 defines the following Services: Terminology Service.

Many Implementation Guides define additional services.

Reference to a canonical URL of another CapabilityStatement that this software adds to. The capability statement automatically includes everything in the other statement, and it is not duplicated, though the server may repeat the same resources, interactions and operations to add additional details to them.

the contents of any directly or indirectly imported CapabilityStatements SHALL NOT overlap, i.e. they cannot refer to the same rest/resource, operations/name, searchparam/name, interaction/code, messaging/endpoint, document/mode pair.

A capability statement that imports another CapabilityStatement automatically instantiates it too (though this is often not a very useful statement for the kinds of CapabilityStatements that are suitable for importing).

Software that is covered by this capability statement. It is used when the capability statement describes the capabilities of a particular software version, independent of an installation.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Name the software is known by.

The version identifier for the software covered by this statement.

If possible, a version should be specified, as statements are likely to be different for different versions of software.

Date this version of the software was released.

Identifies a specific implementation instance that is described by the capability statement - i.e. a particular installation, rather than the capabilities of a software program.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Information about the specific installation that this capability statement relates to.

An absolute base URL for the implementation. This forms the base for REST interfaces as well as the mailbox and document interfaces.

The organization responsible for the management of the instance and oversight of the data on the server at the specified URL.

The version of the FHIR specification that this CapabilityStatement describes (which SHALL be the same as the FHIR version of the CapabilityStatement itself). There is no default value.

Servers may implement multiple versions (see Managing Multiple Versions, and the $versions operation). If they do, and the CapabilityStatement is requested from the server, then this fhirVersion will be either the version requested, or the server's default version.

All published FHIR Versions.

A list of the formats supported by this implementation using their content types.

"xml", "json" and "ttl" are allowed, which describe the simple encodings described in the specification (and imply appropriate bundle support). Otherwise, mime types are legal here.

The mime type of an attachment. Any valid mime type is allowed.

A list of the patch formats supported by this implementation using their content types.

At present, the patch mime types application/json-patch+json and application/xml-patch+xml are legal. Generally, if a server supports PATCH, it would be expected to support the patch formats and match the formats it supports, but this is not always possible or necessary.

BCP 13 (RFCs 2045, 2046, 2047, 4288, 4289 and 2049)

A list of the languages supported by this implementation that are usefully supported in the Accept-Language header.

In general, if a server gets a request with an Accept-Language that it doesn't support, it should still reutrn the resource, just in its default language for the resource.

IETF language tag for a human language

A list of implementation guides that the server does (or should) support in their entirety.

Note: this is primarily only relevant in terms of ImplementationGuides that don't define specific CapabilityStatements declaring the expectation of distinct roles. (E.g. generic IGs that establish privacy policies.) In situations where an ImplementationGuide does define CapabilityStatements, asserting CapabilityStatement.implementationGuide means that the implementation adheres to any Implementation.global definitions present in that IG as well as any textual requirements around security or other general interoperability behaviors. However, it does not make any assertions as to conformance with any of the CapabilityStatements defined in the IG. To assert conformance with CapabilityStatements in a referenced IG, it is necessary to use the CapabilityStatement.instantiates element.

A definition of the restful capabilities of the solution, if any.

Multiple repetitions allow definition of both client and/or server behaviors or possibly behaviors under different configuration settings (for software or requirements statements).

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.rest.transactionMode (new:code)

Element Conformance.rest.transactionMode has a context of CapabilityStatement.rest based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.transactionMode has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Identifies whether this portion of the statement is describing the ability to initiate or receive restful operations.

The mode of a RESTful capability statement.

Information about the system's restful capabilities that apply across all applications, such as security.

Information about security implementation from an interface perspective - what a client needs to know.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.rest.security.certificate (new:BackboneElement)

Element Conformance.rest.security.certificate has a context of CapabilityStatement.rest.security based on following the parent source element upwards and mapping to CapabilityStatement. Element Conformance.rest.security.certificate has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

Server adds CORS headers when responding to requests - this enables Javascript applications to use the server.

The easiest CORS headers to add are Access-Control-Allow-Origin: * & Access-Control-Request-Method: GET, POST, PUT, DELETE. All servers SHOULD support CORS.

Types of security services that are supported/required by the system.

Types of security services used with FHIR.

General description of how security works.

A specification of the restful capabilities of the solution for a specific resource type.

Max of one repetition per resource type.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

An Extension

DSTU2: Conformance.rest.resource.profile additional types (Reference(http://hl7.org/fhir/StructureDefinition/StructureDefinition)) additional types from child elements (display, reference)

Element Conformance.rest.resource.profile is mapped to FHIR R5 element CapabilityStatement.rest.resource.profile as SourceIsBroaderThanTarget. Element Conformance.rest.resource.profile is mapped to FHIR R5 element CapabilityStatement.rest.resource.supportedProfile as RelatedTo. The mappings for Conformance.rest.resource.profile do not cover the following types: Reference. The mappings for Conformance.rest.resource.profile do not cover the following types based on type expansion: display, reference. The profile applies to all resources of this type - i.e. it is the superset of what is supported by the system.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

A type of resource exposed via the restful interface.

The codes SHALL be taken from ResourceType
(required to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

One of the resource types defined as part of this version of FHIR.

unique id for the element within a resource (for internal references)

An Extension

DSTU2: Conformance.rest.resource.type additional codes

Element Conformance.rest.resource.type is mapped to FHIR R5 element CapabilityStatement.rest.resource.type as RelatedTo. The mappings for Conformance.rest.resource.type do not allow expression of the necessary codes, per the bindings on the source and target.

Primitive value for code

A system-wide profile that is applied across all instances of the resource supported by the system. For example, if declared on Observation, this profile is the "superset" of capabilities for laboratory and vitals and other domains. See further discussion in Using Profiles.

All other profiles for this type that are listed in .rest.resource.supportedProfile must conform to this profile.

A list of profiles representing different use cases the system hosts/produces. A supported profile is a statement about the functionality of the data and services provided by the server (or the client) for supported use cases. For example, a system can define and declare multiple Observation profiles for laboratory observations, vital sign observations, etc. By declaring supported profiles, systems provide a way to determine whether individual resources are conformant. See further discussion in Using Profiles.

Supported profiles must conform to the resource profile in the .rest.resource.profile element if it is present. The resource profile is a system-wide profile applied across all instances of the resource supported by the system. A supported profile is a statement about the functionality of the data and services provided by the server (or used by the client) for a particular set of use cases and will not necessarily apply to all data consumed or exposed by the server.