A group of related requests that can be used to capture intended activities that have inter-dependencies such as "give this medication after that one".

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.

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.

This element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation.

An Extension

R4B: RequestGroup.instantiatesUri (new:uri)

Element RequestGroup.instantiatesUri has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.instantiatesUri has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).

R4B: RequestGroup.code (new:CodeableConcept)

Element RequestGroup.code has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.code has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). This element can be used to provide a code that captures the meaning of the request group as a whole, as opposed to the code of the action element, which captures the meaning of the individual actions within the request group.

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. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, 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.

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.

The current state of the request. For request groups, the status reflects the status of all the requests in the group.

This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

Codes identifying the stage lifecycle stage of a request

Indicates the level of authority/intentionality associated with the request and where the request fits into the workflow chain.

This element is labeled as a modifier because the intent alters when and how the resource is actually applicable.

Codes indicating the degree of authority/intentionality associated with a request

Proposals/recommendations, plans and orders all use the same structure and can exist in the same fulfillment chain.

An Extension

R4B: RequestGroup.intent

Element RequestGroup.intent is mapped to FHIR STU3 element RequestGroup.intent as SourceIsBroaderThanTarget. The target context RequestGroup.intent is a modifier element, so this extension does not need to be defined as a modifier.

R4B: RequestGroup.meta additional types (Meta) additional types from child elements (lastUpdated, profile, security, source, tag, versionId)

Element RequestGroup.meta is mapped to FHIR STU3 element RequestGroup.meta as SourceIsBroaderThanTarget. The mappings for RequestGroup.meta do not cover the following types: Meta. The mappings for RequestGroup.meta do not cover the following types based on type expansion: lastUpdated, profile, security, source, tag, versionId.

R4B: RequestGroup.text additional types (Narrative) additional types from child elements (div, status)

Element RequestGroup.text is mapped to FHIR STU3 element RequestGroup.text as SourceIsBroaderThanTarget. The mappings for RequestGroup.text do not cover the following types: Narrative. The mappings for RequestGroup.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. 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.

R4B: RequestGroup.instantiatesUri (new:uri)

Element RequestGroup.instantiatesUri has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.instantiatesUri has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).

R4B: RequestGroup.code (new:CodeableConcept)

Element RequestGroup.code has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.code has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). This element can be used to provide a code that captures the meaning of the request group as a whole, as opposed to the code of the action element, which captures the meaning of the individual actions within the request group.

R4B: RequestGroup.identifier additional types (Identifier) additional types from child elements (assigner, period, system, type, use, value)

Element RequestGroup.identifier is mapped to FHIR STU3 element RequestGroup.identifier as SourceIsBroaderThanTarget. The mappings for RequestGroup.identifier do not cover the following types: Identifier. The mappings for RequestGroup.identifier do not cover the following types based on type expansion: assigner, period, system, type, use, value.

R4B: RequestGroup.instantiatesCanonical additional types (canonical) additional types from child elements (value)

Element RequestGroup.instantiatesCanonical is mapped to FHIR STU3 element RequestGroup.definition as SourceIsBroaderThanTarget. The mappings for RequestGroup.instantiatesCanonical do not cover the following types: canonical. The mappings for RequestGroup.instantiatesCanonical do not cover the following types based on type expansion: value.

R4B: RequestGroup.basedOn additional types from child elements (display, identifier, reference, type)

Element RequestGroup.basedOn is mapped to FHIR STU3 element RequestGroup.basedOn as SourceIsBroaderThanTarget. The mappings for RequestGroup.basedOn do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.basedOn with unmapped reference targets: Resource.

R4B: RequestGroup.replaces additional types from child elements (display, identifier, reference, type)

Element RequestGroup.replaces is mapped to FHIR STU3 element RequestGroup.replaces as SourceIsBroaderThanTarget. The mappings for RequestGroup.replaces do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.replaces with unmapped reference targets: Resource. The replacement could be because the initial request was immediately rejected (due to an issue) or because the previous request was completed, but the need for the action described by the request remains ongoing.

R4B: RequestGroup.groupIdentifier additional types (Identifier) additional types from child elements (assigner, period, system, type, use, value)

Element RequestGroup.groupIdentifier is mapped to FHIR STU3 element RequestGroup.groupIdentifier as SourceIsBroaderThanTarget. The mappings for RequestGroup.groupIdentifier do not cover the following types: Identifier. The mappings for RequestGroup.groupIdentifier do not cover the following types based on type expansion: assigner, period, system, type, use, value. Requests are linked either by a "basedOn" relationship (i.e. one request is fulfilling another) or by having a common requisition. Requests that are part of the same requisition are generally treated independently from the perspective of changing their state or maintaining them after initial creation.

R4B: RequestGroup.intent

Element RequestGroup.intent is mapped to FHIR STU3 element RequestGroup.intent as SourceIsBroaderThanTarget. The target context RequestGroup.intent is a modifier element, so this extension does not need to be defined as a modifier.

R4B: RequestGroup.subject additional types from child elements (display, identifier, reference, type)

Element RequestGroup.subject is mapped to FHIR STU3 element RequestGroup.subject as SourceIsBroaderThanTarget. The mappings for RequestGroup.subject do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.subject with unmapped reference targets: Group, Patient.

R4B: RequestGroup.encounter additional types from child elements (display, identifier, reference, type)

Element RequestGroup.encounter is mapped to FHIR STU3 element RequestGroup.context as SourceIsBroaderThanTarget. The mappings for RequestGroup.encounter do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.encounter with unmapped reference targets: Encounter.

R4B: RequestGroup.author

Element RequestGroup.author is mapped to FHIR STU3 element RequestGroup.author as SourceIsBroaderThanTarget. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.author with unmapped reference targets: Device, Practitioner, PractitionerRole.

R4B: RequestGroup.reasonReference

Element RequestGroup.reasonReference is mapped to FHIR STU3 element RequestGroup.reason[x] as RelatedTo. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.reasonReference with unmapped reference targets: Condition, DiagnosticReport, DocumentReference, Observation. Source element RequestGroup.reasonReference has unmapped reference types. While the target element RequestGroup.reason[x] is a choice type and does not allow extensions, the alternate-reference extension can be applied to Reference values within it.

R4B: RequestGroup.note additional types (Annotation) additional types from child elements (author[x], text, time)

Element RequestGroup.note is mapped to FHIR STU3 element RequestGroup.note as SourceIsBroaderThanTarget. The mappings for RequestGroup.note do not cover the following types: Annotation. The mappings for RequestGroup.note do not cover the following types based on type expansion: author[x], text, time.

R4B: RequestGroup.action.priority (new:code)

Element RequestGroup.action.priority has a context of RequestGroup.action based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.action.priority has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).

R4B: RequestGroup.action.timing[x] additional types (Age, Period, Range, Timing)

Element RequestGroup.action.timing[x] is mapped to FHIR STU3 element RequestGroup.action.timing[x] as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.timing[x] do not cover the following types: Age, Period, Range, Timing. The target context RequestGroup.action.timing[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element RequestGroup.action.

R4B: RequestGroup.action.documentation additional types (RelatedArtifact) additional types from child elements (citation, display, document, label, resource, type, url)

Element RequestGroup.action.documentation is mapped to FHIR STU3 element RequestGroup.action.documentation as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.documentation do not cover the following types: RelatedArtifact. The mappings for RequestGroup.action.documentation do not cover the following types based on type expansion: citation, display, document, label, resource, type, url.

R4B: RequestGroup.action.relatedAction.offset[x] additional types (Range) additional types from child elements (high, low)

Element RequestGroup.action.relatedAction.offset[x] is mapped to FHIR STU3 element RequestGroup.action.relatedAction.offset[x] as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.relatedAction.offset[x] do not cover the following types: Range. The mappings for RequestGroup.action.relatedAction.offset[x] do not cover the following types based on type expansion: high, low. The target context RequestGroup.action.relatedAction.offset[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element RequestGroup.action.relatedAction.

R4B: RequestGroup.action.participant

Element RequestGroup.action.participant is mapped to FHIR STU3 element RequestGroup.action.participant as SourceIsBroaderThanTarget. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.action.participant with unmapped reference targets: Device, Patient, Practitioner, PractitionerRole, RelatedPerson.

R4B: RequestGroup.action.type additional types (CodeableConcept) additional types from child elements (text)

Element RequestGroup.action.type is mapped to FHIR STU3 element RequestGroup.action.type as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.type do not cover the following types: CodeableConcept. The mappings for RequestGroup.action.type do not cover the following types based on type expansion: text.

R4B: RequestGroup.action.resource additional types from child elements (display, identifier, reference, type)

Element RequestGroup.action.resource is mapped to FHIR STU3 element RequestGroup.action.resource as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.resource do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.action.resource with unmapped reference targets: Resource. The target resource SHALL be a Request resource with a Request.intent set to "option".

A group of related requests that can be used to capture intended activities that have inter-dependencies such as "give this medication after that one".

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 may 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

R4B: RequestGroup.meta additional types (Meta) additional types from child elements (lastUpdated, profile, security, source, tag, versionId)

Element RequestGroup.meta is mapped to FHIR STU3 element RequestGroup.meta as SourceIsBroaderThanTarget. The mappings for RequestGroup.meta do not cover the following types: Meta. The mappings for RequestGroup.meta do not cover the following types based on type expansion: lastUpdated, profile, security, source, tag, versionId.

The version specific identifier, as it appears in the version portion of the URL. This values 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 value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant.

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.

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.

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.

This element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation.

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 language.

A human-readable narrative that contains a summary of the resource, and may 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 in formation 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

R4B: RequestGroup.text additional types (Narrative) additional types from child elements (div, status)

Element RequestGroup.text is mapped to FHIR STU3 element RequestGroup.text as SourceIsBroaderThanTarget. The mappings for RequestGroup.text do not cover the following types: Narrative. The mappings for RequestGroup.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. 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.

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 may 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, 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.

An Extension

R4B: RequestGroup.instantiatesUri (new:uri)

Element RequestGroup.instantiatesUri has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.instantiatesUri has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).

R4B: RequestGroup.code (new:CodeableConcept)

Element RequestGroup.code has a context of RequestGroup based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.code has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). This element can be used to provide a code that captures the meaning of the request group as a whole, as opposed to the code of the action element, which captures the meaning of the individual actions within the request group.

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. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, 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.

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.

Allows a service to provide a unique, business identifier for the request.

Allows identification of the request as it is known by various participating systems and in a way that remains consistent across servers.

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

An Extension

R4B: RequestGroup.identifier additional types (Identifier) additional types from child elements (assigner, period, system, type, use, value)

Element RequestGroup.identifier is mapped to FHIR STU3 element RequestGroup.identifier as SourceIsBroaderThanTarget. The mappings for RequestGroup.identifier do not cover the following types: Identifier. The mappings for RequestGroup.identifier do not cover the following types based on type expansion: assigner, period, system, type, use, value.

The purpose of this identifier.

This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one. Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

Identifies the purpose for this identifier, if known .

Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage.

Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

Allows users to make use of identifiers when the identifier system is not known.

Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

The portion of the identifier typically relevant to the user and which is unique within the context of the system.

If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension.

Time period during which identifier is/was valid for use.

Organization that issued/manages the identifier.

The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

A protocol, guideline, orderset or other definition that is adhered to in whole or in part by this request.

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

An Extension

R4B: RequestGroup.instantiatesCanonical additional types (canonical) additional types from child elements (value)

Element RequestGroup.instantiatesCanonical is mapped to FHIR STU3 element RequestGroup.definition as SourceIsBroaderThanTarget. The mappings for RequestGroup.instantiatesCanonical do not cover the following types: canonical. The mappings for RequestGroup.instantiatesCanonical do not cover the following types based on type expansion: value.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

A plan, proposal or order that is fulfilled in whole or in part by this request.

Allows tracing of authorization for the request and tracking whether proposals/recommendations were acted upon.

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

An Extension

R4B: RequestGroup.basedOn additional types from child elements (display, identifier, reference, type)

Element RequestGroup.basedOn is mapped to FHIR STU3 element RequestGroup.basedOn as SourceIsBroaderThanTarget. The mappings for RequestGroup.basedOn do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.basedOn with unmapped reference targets: Resource.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Completed or terminated request(s) whose function is taken by this new request.

The replacement could be because the initial request was immediately rejected (due to an issue) or because the previous request was completed, but the need for the action described by the request remains ongoing.

Allows tracing the continuation of a therapy or administrative process instantiated through multiple requests.

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

An Extension

R4B: RequestGroup.replaces additional types from child elements (display, identifier, reference, type)

Element RequestGroup.replaces is mapped to FHIR STU3 element RequestGroup.replaces as SourceIsBroaderThanTarget. The mappings for RequestGroup.replaces do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.replaces with unmapped reference targets: Resource. The replacement could be because the initial request was immediately rejected (due to an issue) or because the previous request was completed, but the need for the action described by the request remains ongoing.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

A shared identifier common to all requests that were authorized more or less simultaneously by a single author, representing the identifier of the requisition, prescription or similar form.

Requests are linked either by a "basedOn" relationship (i.e. one request is fulfilling another) or by having a common requisition. Requests that are part of the same requisition are generally treated independently from the perspective of changing their state or maintaining them after initial creation.

Some business processes need to know if multiple items were ordered as part of the same "prescription" or "requisition" for billing or other purposes.

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

An Extension

R4B: RequestGroup.groupIdentifier additional types (Identifier) additional types from child elements (assigner, period, system, type, use, value)

Element RequestGroup.groupIdentifier is mapped to FHIR STU3 element RequestGroup.groupIdentifier as SourceIsBroaderThanTarget. The mappings for RequestGroup.groupIdentifier do not cover the following types: Identifier. The mappings for RequestGroup.groupIdentifier do not cover the following types based on type expansion: assigner, period, system, type, use, value. Requests are linked either by a "basedOn" relationship (i.e. one request is fulfilling another) or by having a common requisition. Requests that are part of the same requisition are generally treated independently from the perspective of changing their state or maintaining them after initial creation.

The purpose of this identifier.

This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one. Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

Identifies the purpose for this identifier, if known .

Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage.

Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

Allows users to make use of identifiers when the identifier system is not known.

Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

The portion of the identifier typically relevant to the user and which is unique within the context of the system.

If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension.

Time period during which identifier is/was valid for use.

Organization that issued/manages the identifier.

The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

The current state of the request. For request groups, the status reflects the status of all the requests in the group.

This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

Codes identifying the stage lifecycle stage of a request

Indicates the level of authority/intentionality associated with the request and where the request fits into the workflow chain.

This element is labeled as a modifier because the intent alters when and how the resource is actually applicable.

Codes indicating the degree of authority/intentionality associated with a request

Proposals/recommendations, plans and orders all use the same structure and can exist in the same fulfillment chain.

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

An Extension

R4B: RequestGroup.intent

Element RequestGroup.intent is mapped to FHIR STU3 element RequestGroup.intent as SourceIsBroaderThanTarget. The target context RequestGroup.intent is a modifier element, so this extension does not need to be defined as a modifier.

Primitive value for code

Indicates how quickly the request should be addressed with respect to other requests.

Identifies the level of importance to be assigned to actioning the request

The subject for which the request group was created.

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

An Extension

R4B: RequestGroup.subject additional types from child elements (display, identifier, reference, type)

Element RequestGroup.subject is mapped to FHIR STU3 element RequestGroup.subject as SourceIsBroaderThanTarget. The mappings for RequestGroup.subject do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.subject with unmapped reference targets: Group, Patient.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Describes the context of the request group, if any.

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

An Extension

R4B: RequestGroup.encounter additional types from child elements (display, identifier, reference, type)

Element RequestGroup.encounter is mapped to FHIR STU3 element RequestGroup.context as SourceIsBroaderThanTarget. The mappings for RequestGroup.encounter do not cover the following types based on type expansion: display, identifier, reference, type. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.encounter with unmapped reference targets: Encounter.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Indicates when the request group was created.

Provides a reference to the author of the request group.

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

An Extension

R4B: RequestGroup.author

Element RequestGroup.author is mapped to FHIR STU3 element RequestGroup.author as SourceIsBroaderThanTarget. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.author with unmapped reference targets: Device, Practitioner, PractitionerRole.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

Indicates the reason the request group was created. This is typically provided as a parameter to the evaluation and echoed by the service, although for some use cases, such as subscription- or event-based scenarios, it may provide an indication of the cause for the response.

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

An Extension

R4B: RequestGroup.reasonReference

Element RequestGroup.reasonReference is mapped to FHIR STU3 element RequestGroup.reason[x] as RelatedTo. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.reasonReference with unmapped reference targets: Condition, DiagnosticReport, DocumentReference, Observation. Source element RequestGroup.reasonReference has unmapped reference types. While the target element RequestGroup.reason[x] is a choice type and does not allow extensions, the alternate-reference extension can be applied to Reference values within it.

Provides a mechanism to communicate additional information about the response.

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

An Extension

R4B: RequestGroup.note additional types (Annotation) additional types from child elements (author[x], text, time)

Element RequestGroup.note is mapped to FHIR STU3 element RequestGroup.note as SourceIsBroaderThanTarget. The mappings for RequestGroup.note do not cover the following types: Annotation. The mappings for RequestGroup.note do not cover the following types based on type expansion: author[x], text, time.

The individual responsible for making the annotation.

Indicates when this particular annotation was made.

The text of the annotation.

The actions, if any, produced by the evaluation of the artifact.

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

An Extension

R4B: RequestGroup.action.priority (new:code)

Element RequestGroup.action.priority has a context of RequestGroup.action based on following the parent source element upwards and mapping to RequestGroup. Element RequestGroup.action.priority has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).

R4B: RequestGroup.action.timing[x] additional types (Age, Period, Range, Timing)

Element RequestGroup.action.timing[x] is mapped to FHIR STU3 element RequestGroup.action.timing[x] as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.timing[x] do not cover the following types: Age, Period, Range, Timing. The target context RequestGroup.action.timing[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element RequestGroup.action.

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 that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, 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.

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.

A user-visible label for the action.

The title of the action displayed to a user.

A short description of the action used to provide a summary to display to the user.

A text equivalent of the action to be performed. This provides a human-interpretable description of the action when the definition is consumed by a system that may not be capable of interpreting it dynamically.

A code that provides meaning for the action or action group. For example, a section may have a LOINC code for a the section of a documentation template.

Didactic or other informational resources associated with the action that can be provided to the CDS recipient. Information resources can include inline text commentary and links to web resources.

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

An Extension

R4B: RequestGroup.action.documentation additional types (RelatedArtifact) additional types from child elements (citation, display, document, label, resource, type, url)

Element RequestGroup.action.documentation is mapped to FHIR STU3 element RequestGroup.action.documentation as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.documentation do not cover the following types: RelatedArtifact. The mappings for RequestGroup.action.documentation do not cover the following types based on type expansion: citation, display, document, label, resource, type, url.

The type of relationship to the related artifact.

The type of relationship to the related artifact

A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.

A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format.

Additional structured information about citations should be captured as extensions.

A url for the artifact that can be followed to access the actual content.

If a document or resource element is present, this element SHALL NOT be provided (use the url or reference in the Attachment or resource reference).

The document being referenced, represented as an attachment. This is exclusive with the resource element.

The related resource, such as a library, value set, profile, or other knowledge resource.

If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.

An expression that describes applicability criteria, or start/stop conditions for the action.

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. In order to make the use of extensions safe and manageable, 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.

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 that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, 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.

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.

The kind of condition.

Applicability criteria are used to determine immediate applicability when a plan definition is applied to a given context. Start and stop criteria are carried through application and used to describe when enter/exit criteria for an action.

The kind of condition for the action

A brief, natural language description of the condition that effectively communicates the intended semantics.

The media type of the language for the expression.

An expression that returns true or false, indicating whether or not the condition is satisfied.

The expression may be inlined, or may be a reference to a named expression within a logic library referenced by the library element.

A relationship to another action such as "before" or "30-60 minutes after start of".

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

An Extension

R4B: RequestGroup.action.relatedAction.offset[x] additional types (Range) additional types from child elements (high, low)

Element RequestGroup.action.relatedAction.offset[x] is mapped to FHIR STU3 element RequestGroup.action.relatedAction.offset[x] as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.relatedAction.offset[x] do not cover the following types: Range. The mappings for RequestGroup.action.relatedAction.offset[x] do not cover the following types based on type expansion: high, low. The target context RequestGroup.action.relatedAction.offset[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element RequestGroup.action.relatedAction.

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 that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, 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.

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.

The element id of the action this is related to.

The relationship of this action to the related action.

Defines the types of relationships between actions

A duration or range of durations to apply to the relationship. For example, 30-60 minutes before.

An optional value describing when the action should be performed.

The participant that should perform or be responsible for this action.

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

An Extension

R4B: RequestGroup.action.participant

Element RequestGroup.action.participant is mapped to FHIR STU3 element RequestGroup.action.participant as SourceIsBroaderThanTarget. The standard extension alternate-reference has been mapped as the representation of FHIR R4B element RequestGroup.action.participant with unmapped reference targets: Device, Patient, Practitioner, PractitionerRole, RelatedPerson.

A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

An identifier for the other resource. This is used when there is no way to reference the other resource directly, either because the entity is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

Plain text narrative that identifies the resource in addition to the resource reference.

This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

The type of action to perform (create, update, remove).

The type of action to be performed

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

An Extension

R4B: RequestGroup.action.type additional types (CodeableConcept) additional types from child elements (text)

Element RequestGroup.action.type is mapped to FHIR STU3 element RequestGroup.action.type as SourceIsBroaderThanTarget. The mappings for RequestGroup.action.type do not cover the following types: CodeableConcept. The mappings for RequestGroup.action.type do not cover the following types based on type expansion: text.

The identification of the code system that defines the meaning of the symbol in the code.

The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously.

Need to be unambiguous about the source of the definition of the symbol.

The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured. and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

Need to refer to a particular code in the system.

A representation of the meaning of the code in the system, following the rules of the system.

Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays).

Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.