US Public Health Profiles Library
1.0.0 - STU1 United States of America flag

US Public Health Profiles Library, published by HL7 Public Health Working Group. This is not an authorized publication; it is the continuous build for version 1.0.0). This version is based on the current content of https://github.com/HL7/fhir-us-ph-common-library-ig/ and changes regularly. See the Directory of published versions

Resource Profile: USPublicHealthComputableValueSet - Detailed Descriptions

Active as of 2023-10-04

Definitions for the us-ph-computable-valueset resource profile.

Guidance on how to interpret the contents of this table can be found here

0. ValueSet
Invariantscvs-1: Only one of rulesText, expression, or a compose definition SHALL be provided (extension('http://hl7.org/fhir/StructureDefinition/valueset-rules-text').exists() xor extension('http://hl7.org/fhir/StructureDefinition/valueset-expression').exists() xor compose.exists())
2. ValueSet.extension:rulesText
Slice NamerulesText
Definition

An expression that provides a definition of the content of the value set in some form that is not computable - e.g. instructions that could only be followed by a human.

ShortHuman instructions for constructing the valueset
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(rules-text) (Extension Type: markdown)
Must Supporttrue
4. ValueSet.extension:expression
Slice Nameexpression
Definition

An expression that provides the computable definition for the content of the value set. The value set can only be expanded by a server that understands the expression syntax used.

ShortMachine instructions for constructing the value set
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(expression) (Extension Type: Expression)
Must Supporttrue
6. ValueSet.compose
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given valueset instance.

Must Supporttrue

Guidance on how to interpret the contents of this table can be found here

0. ValueSet
Definition

A ValueSet resource instance specifies a set of codes drawn from one or more code systems, intended for use in a particular context. Value sets link between CodeSystem definitions and their use in coded elements.


A ValueSet resource instance specifies a set of codes drawn from one or more code systems, intended for use in a particular context. Value sets link between CodeSystem definitions and their use in coded elements.

ShortA set of codes drawn from one or more code systems
Control10..1*
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
vsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
cvs-1: Only one of rulesText, expression, or a compose definition SHALL be provided (extension('http://hl7.org/fhir/StructureDefinition/valueset-rules-text').exists() xor extension('http://hl7.org/fhir/StructureDefinition/valueset-expression').exists() xor compose.exists())
vsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
2. ValueSet.implicitRules
Definition

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.

ShortA set of rules under which this content was created
Comments

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

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. ValueSet.extension
Definition

An Extension


May be used to represent additional information that is not part of the basic definition of the resource. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

ShortExtensionAdditional content defined by implementations
Comments

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.

Control20..*
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on ValueSet.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
6. ValueSet.extension:extensionValueSetSteward
Slice NameextensionValueSetSteward
Definition

The entity or set of entities that create and may modify the Value Set Definition content. The name of a group or an individual, along with contact details.

ShortValue set steward
Comments

The information included should include contact information.

Control1..1
This element is affected by the following invariants: ele-1
TypeExtension(steward) (Extension Type: ContactDetail)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. ValueSet.extension:extensionValueSetAuthor
Slice NameextensionValueSetAuthor
Definition

The entity or set of entities that create and may modify the Value Set Definition content. The name of a group or an individual, along with contact details.

ShortValue set author
Comments

This can be any combination of groups or individuals. When known and actively maintained, this should be populated. The information included about the Author may include contact information.

Control1..1
This element is affected by the following invariants: ele-1
TypeExtension(author) (Extension Type: ContactDetail)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
10. ValueSet.extension:rulesText
Slice NamerulesText
Definition

An expression that provides a definition of the content of the value set in some form that is not computable - e.g. instructions that could only be followed by a human.

ShortHuman instructions for constructing the valueset
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(rules-text) (Extension Type: markdown)
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. ValueSet.extension:expression
Slice Nameexpression
Definition

An expression that provides the computable definition for the content of the value set. The value set can only be expanded by a server that understands the expression syntax used.

ShortMachine instructions for constructing the value set
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(expression) (Extension Type: Expression)
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
14. ValueSet.modifierExtension
Definition

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 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.

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

ShortExtensions that cannot be ignored
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summaryfalse
Requirements

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.


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.

Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
16. ValueSet.url
Definition

An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this value set is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the value set is stored on different servers.

ShortCanonical identifier for this value set, represented as a URI (globally unique)
Comments

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.


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.

Control10..1
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Allows the value set to be referenced by a single globally unique identifier.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
18. ValueSet.identifier
Definition

The identifier of the value set.


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

ShortValue set identifier used by public healthAdditional identifier for the value set (business identifier)
Comments

Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this value set outside of FHIR, where it is not possible to use the logical URI.

NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

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

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. ValueSet.version
Definition

The identifier that is used to identify this version of the value set when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the value set 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.

ShortBusiness version of the value set
Comments

There may be different value set 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 value set with the format [url]|[version].

NoteThis is a business versionId, not a resource version id (see discussion)
Control10..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. ValueSet.name
Definition

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

ShortName for this value set (computer friendly)
Comments

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.A name should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a name.

Control10..1
This element is affected by the following invariants: inv-0
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Support human navigation and code generation.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. ValueSet.title
Definition

The title of the value set.


A short, descriptive, user-friendly title for the value set.

ShortValue set titleName for this value set (human friendly)
Comments

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

Control10..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. ValueSet.status
Definition

The status of this value set. Enables tracking the life-cycle of the content. The status of the value set applies to the value set definition (ValueSet.compose) and the associated ValueSet metadata. Expansions do not have a state.

Shortdraft | active | retired | unknown
Comments

Allows filtering of value sets that are appropriate for use versus not.See also the valueset-workflowStatus extension for additional status information related to the editorial process.


Allows filtering of value sets that are appropriate for use versus not.See also the valueset-workflowStatus extension for additional status information related to the editorial process.

Control1..1
BindingThe codes SHALL be taken from PublicationStatushttp://hl7.org/fhir/ValueSet/publication-status|4.0.1

The lifecycle status of an artifact.

Typecode
Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. ValueSet.experimental
Definition

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

ShortFor testing purposes, not real usage
Comments

Allows filtering of value sets that are appropriate for use versus not.

Control10..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

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

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. ValueSet.publisher
Definition

The name of the organization or individual that published the value set.

ShortName of the publisher (organization or individual)
Comments

Usually an organization but may be an individual. The publisher (or steward) of the value set is the organization or individual primarily responsible for the maintenance and upkeep of the value set. 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 value set. This item SHOULD be populated unless the information is available from context.

Control10..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Helps establish the "authority/credibility" of the value set. May also allow for contact.

Alternate Namessteward
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
32. ValueSet.description
Definition

A free text natural language description of the value set from a consumer's perspective. The textual description specifies the span of meanings for concepts to be included within the Value Set Expansion, and also may specify the intended use and limitations of the Value Set.

ShortNatural language description of the value set
Comments

This description can be used to capture details such as why the value set was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the value set 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 value set is presumed to be the predominant language in the place the value set was created).The description is not intended to describe the semantics of the Value Set - there are no intrinsic semantics separate from the codes contained in its expansion. The description should capture its intended use, which is needed for ensuring integrity for its use in models across future changes. A description should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a description.

Control10..1
Typemarkdown
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Alternate NamesScope, Purpose, scope
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. ValueSet.useContext
Definition

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 value set instances.

ShortThe context that the content is intended to support
Comments

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

Control10..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
SlicingThis element introduces a set of slices on ValueSet.useContext. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • pattern @ code
36. ValueSet.useContext:priorityContext
Slice NamepriorityContext
Definition

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 value set instances.

ShortThe context that the content is intended to support
Comments

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

Control0..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. ValueSet.useContext:priorityContext.code
Definition

A code that identifies the type of context being specified by this usage context.

ShortType of context being specified
Control1..1
BindingUnless not suitable, these codes SHALL be taken from UsageContextTypehttp://hl7.org/fhir/ValueSet/usage-context-type

A code that specifies a type of context being specified by a usage context.

TypeCoding
Is Modifierfalse
Must Supporttrue
Summarytrue
Pattern Value&lt;valueCoding&nbsp;xmlns=&quot;http://hl7.org/fhir&quot;&gt;<br/>&nbsp;&nbsp;&lt;system&nbsp;value=&quot;http://hl7.org/fhir/us/ph-library/CodeSystem/us-ph-codesystem-usage-context-type&quot;/&gt;<br/>&nbsp;&nbsp;&lt;code&nbsp;value=&quot;priority&quot;/&gt;<br/>&lt;/valueCoding&gt;<br/>
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. ValueSet.useContext:priorityContext.value[x]
Definition

The US Public Health release priority of the value set.


A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.

ShortRelease priority of the ValueSetValue that defines the context
Control1..1
BindingThe codes SHALL be taken from For example codes, see US Public Health ValueSet Priorityhttp://hl7.org/fhir/ValueSet/use-context

US PH ValueSet Release Priority Codes.


A code that defines the specific value for the context being specified.

TypeCodeableConcept, Reference(PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization), Quantity, Range
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. ValueSet.useContext:focusConditionContext
Slice NamefocusConditionContext
Definition

The clinical condition that is the focus of the codes in this value set.


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 value set instances.

ShortThe context that the content is intended to support
Comments

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

Control0..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. ValueSet.useContext:focusConditionContext.code
Definition

A code that identifies the type of context being specified by this usage context.

ShortType of context being specified
Control1..1
BindingUnless not suitable, these codes SHALL be taken from UsageContextTypehttp://hl7.org/fhir/ValueSet/usage-context-type

A code that specifies a type of context being specified by a usage context.

TypeCoding
Is Modifierfalse
Must Supporttrue
Summarytrue
Pattern Value&lt;valueCoding&nbsp;xmlns=&quot;http://hl7.org/fhir&quot;&gt;<br/>&nbsp;&nbsp;&lt;system&nbsp;value=&quot;http://terminology.hl7.org/CodeSystem/usage-context-type&quot;/&gt;<br/>&nbsp;&nbsp;&lt;code&nbsp;value=&quot;focus&quot;/&gt;<br/>&lt;/valueCoding&gt;<br/>
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. ValueSet.useContext:focusConditionContext.value[x]
Definition

The clinical condition that is the focus of the codes in this value set.


A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.

ShortClinical condition that is the focus of the codes in this value setValue that defines the context
Control1..1
BindingFor example codes, see Condition/Problem/DiagnosisCodeshttp://hl7.org/fhir/ValueSet/use-context

Condition/Problem/Diagnosis Codes.


A code that defines the specific value for the context being specified.

TypeCodeableConcept, Reference(PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization), Quantity, Range
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
48. ValueSet.compose
Definition

A set of criteria that define the contents of the value set by including or excluding codes selected from the specified code system(s) that the value set draws from. This is also known as the Content Logical Definition (CLD).

ShortContent logical definition of the value set (CLD)
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given valueset instance.

Control0..1
This element is affected by the following invariants: cvs-1
TypeBackboneElement
Is Modifierfalse
Must Supporttrue
Summaryfalse
Alternate NamesContent Logical Definition, CLD
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
50. ValueSet.compose.modifierExtension
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 manageable, 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).

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.


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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
52. ValueSet.compose.include
Definition

Include one or more codes from a code system or other value set(s).

ShortInclude one or more codes from a code system or other value set(s)
Comments

All the conditions in an include must be true. If a system is listed, all the codes from the system are listed. If one or more filters are listed, all of the filters must apply. If one or more value sets are listed, the codes must be in all the value sets. E.g. each include is 'include all the codes that meet all these conditions'.

Control1..*
TypeBackboneElement
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
vsd-1: A value set include/exclude SHALL have a value set or a system (valueSet.exists() or system.exists())
vsd-2: A value set with concepts or filters SHALL include a system ((concept.exists() or filter.exists()) implies system.exists())
vsd-3: Cannot have both concept and filter (concept.empty() or filter.empty())
vsd-1: A value set include/exclude SHALL have a value set or a system (valueSet.exists() or system.exists())
vsd-2: A value set with concepts or filters SHALL include a system ((concept.exists() or filter.exists()) implies system.exists())
vsd-3: Cannot have both concept and filter (concept.empty() or filter.empty())
54. ValueSet.compose.include.modifierExtension
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 manageable, 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).

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.


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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
56. ValueSet.compose.include.system
Definition

An absolute URI which is the code system from which the selected codes come from.

ShortThe system the codes come from
Comments

If there are no codes or filters, the entire code system is included. Note that the set of codes that are included may contain abstract codes. See ''Coding.system'' for further documentation about the correct value for the system element.

Control0..1
This element is affected by the following invariants: vsd-1, vsd-2
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be found here

0. ValueSet
Definition

A ValueSet resource instance specifies a set of codes drawn from one or more code systems, intended for use in a particular context. Value sets link between CodeSystem definitions and their use in coded elements.

ShortA set of codes drawn from one or more code systems
Control1..1
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
vsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
cvs-1: Only one of rulesText, expression, or a compose definition SHALL be provided (extension('http://hl7.org/fhir/StructureDefinition/valueset-rules-text').exists() xor extension('http://hl7.org/fhir/StructureDefinition/valueset-expression').exists() xor compose.exists())
2. ValueSet.id
Definition

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

ShortLogical id of this artifact
Comments

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

Control0..1
Typeid
Is Modifierfalse
Summarytrue
4. ValueSet.meta
Definition

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.

ShortMetadata about the resource
Control0..1
TypeMeta
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. ValueSet.implicitRules
Definition

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.

ShortA set of rules under which this content was created
Comments

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

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. ValueSet.language
Definition

The base language in which the resource is written.

ShortLanguage of the resource content
Comments

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).

Control0..1
BindingThe codes SHOULD be taken from CommonLanguages: A human language.
Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. ValueSet.text
Definition

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.

ShortText summary of the resource, for human interpretation
Comments

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.

Control0..1
TypeNarrative
Is Modifierfalse
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. ValueSet.contained
Definition

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.

ShortContained, inline Resources
Comments

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.

Control0..*
TypeResource
Is Modifierfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
14. ValueSet.extension
Definition

An Extension

ShortExtension
Control2..*
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on ValueSet.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
16. ValueSet.extension:extensionValueSetSteward
Slice NameextensionValueSetSteward
Definition

The entity or set of entities that create and may modify the Value Set Definition content. The name of a group or an individual, along with contact details.

ShortValue set steward
Comments

The information included should include contact information.

Control1..1
This element is affected by the following invariants: ele-1
TypeExtension(steward) (Extension Type: ContactDetail)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
18. ValueSet.extension:extensionValueSetAuthor
Slice NameextensionValueSetAuthor
Definition

The entity or set of entities that create and may modify the Value Set Definition content. The name of a group or an individual, along with contact details.

ShortValue set author
Comments

This can be any combination of groups or individuals. When known and actively maintained, this should be populated. The information included about the Author may include contact information.

Control1..1
This element is affected by the following invariants: ele-1
TypeExtension(author) (Extension Type: ContactDetail)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
20. ValueSet.extension:rulesText
Slice NamerulesText
Definition

An expression that provides a definition of the content of the value set in some form that is not computable - e.g. instructions that could only be followed by a human.

ShortHuman instructions for constructing the valueset
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(rules-text) (Extension Type: markdown)
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
22. ValueSet.extension:expression
Slice Nameexpression
Definition

An expression that provides the computable definition for the content of the value set. The value set can only be expanded by a server that understands the expression syntax used.

ShortMachine instructions for constructing the value set
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given value set instance. Note that to provide a human-readable description of the expression, use the description element of the expression datatype.

Control0..1
This element is affected by the following invariants: cvs-1
TypeExtension(expression) (Extension Type: Expression)
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
24. ValueSet.modifierExtension
Definition

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 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.

ShortExtensions that cannot be ignored
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summaryfalse
Requirements

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.

Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
26. ValueSet.url
Definition

An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this value set is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the value set is stored on different servers.

ShortCanonical identifier for this value set, represented as a URI (globally unique)
Comments

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.

Control1..1
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Allows the value set to be referenced by a single globally unique identifier.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. ValueSet.identifier
Definition

The identifier of the value set.

ShortValue set identifier used by public health
Comments

Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this value set outside of FHIR, where it is not possible to use the logical URI.

NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

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

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. ValueSet.version
Definition

The identifier that is used to identify this version of the value set when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the value set 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.

ShortBusiness version of the value set
Comments

There may be different value set 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 value set with the format [url]|[version].

NoteThis is a business versionId, not a resource version id (see discussion)
Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
32. ValueSet.name
Definition

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

ShortName for this value set (computer friendly)
Comments

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.A name should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a name.

Control1..1
This element is affected by the following invariants: inv-0
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Support human navigation and code generation.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. ValueSet.title
Definition

The title of the value set.

ShortValue set title
Comments

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

Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. ValueSet.status
Definition

The status of this value set. Enables tracking the life-cycle of the content. The status of the value set applies to the value set definition (ValueSet.compose) and the associated ValueSet metadata. Expansions do not have a state.

Shortdraft | active | retired | unknown
Comments

Allows filtering of value sets that are appropriate for use versus not.See also the valueset-workflowStatus extension for additional status information related to the editorial process.

Control1..1
BindingThe codes SHALL be taken from PublicationStatus: The lifecycle status of an artifact.
Typecode
Is Modifiertrue because This is labeled as &quot;Is Modifier&quot; because applications should not use a retired {{title}} without due consideration
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. ValueSet.experimental
Definition

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

ShortFor testing purposes, not real usage
Comments

Allows filtering of value sets that are appropriate for use versus not.

Control1..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

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

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. ValueSet.date
Definition

The date (and optionally time) when the value set was created or revised (e.g. the 'content logical definition').

ShortDate last changed
Comments

Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the value set. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

Control0..1
TypedateTime
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Alternate NamesRevision Date
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. ValueSet.publisher
Definition

The name of the organization or individual that published the value set.

ShortName of the publisher (organization or individual)
Comments

Usually an organization but may be an individual. The publisher (or steward) of the value set is the organization or individual primarily responsible for the maintenance and upkeep of the value set. 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 value set. This item SHOULD be populated unless the information is available from context.

Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Helps establish the "authority/credibility" of the value set. May also allow for contact.

Alternate Namessteward
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. ValueSet.contact
Definition

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

ShortContact details for the publisher
Comments

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

Control0..*
TypeContactDetail
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. ValueSet.description
Definition

A free text natural language description of the value set from a consumer's perspective. The textual description specifies the span of meanings for concepts to be included within the Value Set Expansion, and also may specify the intended use and limitations of the Value Set.

ShortNatural language description of the value set
Comments

This description can be used to capture details such as why the value set was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the value set 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 value set is presumed to be the predominant language in the place the value set was created).The description is not intended to describe the semantics of the Value Set - there are no intrinsic semantics separate from the codes contained in its expansion. The description should capture its intended use, which is needed for ensuring integrity for its use in models across future changes. A description should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a description.

Control1..1
Typemarkdown
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Alternate NamesScope, Purpose, scope
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
48. ValueSet.useContext
Definition

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 value set instances.

ShortThe context that the content is intended to support
Comments

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

Control1..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
SlicingThis element introduces a set of slices on ValueSet.useContext. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • pattern @ code
50. ValueSet.useContext:priorityContext
Slice NamepriorityContext
Definition

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 value set instances.

ShortThe context that the content is intended to support
Comments

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

Control0..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
52. ValueSet.useContext:priorityContext.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
54. ValueSet.useContext:priorityContext.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on ValueSet.useContext.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
56. ValueSet.useContext:priorityContext.code
Definition

A code that identifies the type of context being specified by this usage context.

ShortType of context being specified
Control1..1
BindingUnless not suitable, these codes SHALL be taken from UsageContextType: A code that specifies a type of context being specified by a usage context.
TypeCoding
Is Modifierfalse
Must Supporttrue
Summarytrue
Pattern Value&lt;valueCoding&nbsp;xmlns=&quot;http://hl7.org/fhir&quot;&gt;<br/>&nbsp;&nbsp;&lt;system&nbsp;value=&quot;http://hl7.org/fhir/us/ph-library/CodeSystem/us-ph-codesystem-usage-context-type&quot;/&gt;<br/>&nbsp;&nbsp;&lt;code&nbsp;value=&quot;priority&quot;/&gt;<br/>&lt;/valueCoding&gt;<br/>
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
58. ValueSet.useContext:priorityContext.value[x]
Definition

The US Public Health release priority of the value set.

ShortRelease priority of the ValueSet
Control1..1
BindingThe codes SHALL be taken from US Public Health ValueSet Priority: US PH ValueSet Release Priority Codes.
TypeCodeableConcept
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
60. ValueSet.useContext:focusConditionContext
Slice NamefocusConditionContext
Definition

The clinical condition that is the focus of the codes in this value set.

ShortThe context that the content is intended to support
Comments

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

Control0..*
TypeUsageContext
Is Modifierfalse
Must Supporttrue
Summarytrue
Requirements

Assist in searching for appropriate content.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
62. ValueSet.useContext:focusConditionContext.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
64. ValueSet.useContext:focusConditionContext.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on ValueSet.useContext.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
66. ValueSet.useContext:focusConditionContext.code
Definition

A code that identifies the type of context being specified by this usage context.

ShortType of context being specified
Control1..1
BindingUnless not suitable, these codes SHALL be taken from UsageContextType: A code that specifies a type of context being specified by a usage context.
TypeCoding
Is Modifierfalse
Must Supporttrue
Summarytrue
Pattern Value&lt;valueCoding&nbsp;xmlns=&quot;http://hl7.org/fhir&quot;&gt;<br/>&nbsp;&nbsp;&lt;system&nbsp;value=&quot;http://terminology.hl7.org/CodeSystem/usage-context-type&quot;/&gt;<br/>&nbsp;&nbsp;&lt;code&nbsp;value=&quot;focus&quot;/&gt;<br/>&lt;/valueCoding&gt;<br/>
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
68. ValueSet.useContext:focusConditionContext.value[x]
Definition

The clinical condition that is the focus of the codes in this value set.

ShortClinical condition that is the focus of the codes in this value set
Control1..1
BindingFor example codes, see Condition/Problem/DiagnosisCodes: Condition/Problem/Diagnosis Codes.
TypeCodeableConcept
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
70. ValueSet.jurisdiction
Definition

A legal or geographic region in which the value set is intended to be used.

ShortIntended jurisdiction for value set (if applicable)
Comments

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

Control0..*
BindingUnless not suitable, these codes SHALL be taken from Jurisdiction ValueSet: Countries and regions within which this artifact is targeted for use.
TypeCodeableConcept
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
72. ValueSet.immutable
Definition

If this is set to 'true', then no new versions of the content logical definition can be created. Note: Other metadata might still change.

ShortIndicates whether or not any change to the content logical definition may occur
Comments

Normally immutability is set to 'false', which is the default assumption if it is not populated. Note that the implication is that if this is set to 'true', there may be only one ValueSet version for this definition. Immutability tends to be set to 'true' in one of two cases: - Where the value set, by the nature of its usage, cannot change. For example "All specializations of ACT in ActClassCode" - Where there's no safe way to express the "Purpose" such that someone else could safely make changes to the value set definition. Source workflow control must guarantee that the same URI always yields the same definition.

Control0..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
74. ValueSet.purpose
Definition

Explanation of why this value set is needed and why it has been designed as it has.

ShortWhy this value set is defined
Comments

This element does not describe the usage of the value set. 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 value set.

Control0..1
Typemarkdown
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
76. ValueSet.copyright
Definition

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

ShortUse and/or publishing restrictions
Comments

nullFrequently, the copyright differs between the value set and the codes that are included. The copyright statement should clearly differentiate between these when required.

Control0..1
Typemarkdown
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Requirements

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

Alternate NamesLicense, Restrictions
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
78. ValueSet.compose
Definition

A set of criteria that define the contents of the value set by including or excluding codes selected from the specified code system(s) that the value set draws from. This is also known as the Content Logical Definition (CLD).

ShortContent logical definition of the value set (CLD)
Comments

Only one of rulesText, expression, or compose SHALL be provided for any given valueset instance.

Control0..1
This element is affected by the following invariants: cvs-1
TypeBackboneElement
Is Modifierfalse
Must Supporttrue
Summaryfalse
Alternate NamesContent Logical Definition, CLD
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
80. ValueSet.compose.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
82. ValueSet.compose.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
84. ValueSet.compose.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
86. ValueSet.compose.lockedDate
Definition

The Locked Date is the effective date that is used to determine the version of all referenced Code Systems and Value Set Definitions included in the compose that are not already tied to a specific version.

ShortFixed date for references with no specified version (transitive)
Comments

With a defined lockedDate the value set is considered "Locked". Otherwise, the value set may have different expansions as underlying code systems and/or value sets evolve. The interpretation of lockedDate is often dependent on the context - e.g. a SNOMED CT derived value set with a lockedDate will have a different expansion in USA than in UK. If a value set specifies a version for include and exclude statements, and also specifies a locked date, the specified versions need to be available that date, or the value set will not be usable.

Control0..1
Typedate
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
88. ValueSet.compose.inactive
Definition

Whether inactive codes - codes that are not approved for current use - are in the value set. If inactive = true, inactive codes are to be included in the expansion, if inactive = false, the inactive codes will not be included in the expansion. If absent, the behavior is determined by the implementation, or by the applicable $expand parameters (but generally, inactive codes would be expected to be included).

ShortWhether inactive codes are in the value set
Comments

Note that in the FHIR terminology framework, "deprecated" does not mean inactive, but in some code systems, e.g. LOINC, "deprecated" does mean inactive. Code systems should define what codes are considered to be inactive. If this is not clearly defined (including in the FHIR code system resource), then all codes are assumed to be active.

Control0..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
90. ValueSet.compose.include
Definition

Include one or more codes from a code system or other value set(s).

ShortInclude one or more codes from a code system or other value set(s)
Comments

All the conditions in an include must be true. If a system is listed, all the codes from the system are listed. If one or more filters are listed, all of the filters must apply. If one or more value sets are listed, the codes must be in all the value sets. E.g. each include is 'include all the codes that meet all these conditions'.

Control1..*
TypeBackboneElement
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
vsd-1: A value set include/exclude SHALL have a value set or a system (valueSet.exists() or system.exists())
vsd-2: A value set with concepts or filters SHALL include a system ((concept.exists() or filter.exists()) implies system.exists())
vsd-3: Cannot have both concept and filter (concept.empty() or filter.empty())
92. ValueSet.compose.include.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
94. ValueSet.compose.include.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
96. ValueSet.compose.include.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
98. ValueSet.compose.include.system
Definition

An absolute URI which is the code system from which the selected codes come from.

ShortThe system the codes come from
Comments

If there are no codes or filters, the entire code system is included. Note that the set of codes that are included may contain abstract codes. See ''Coding.system'' for further documentation about the correct value for the system element.

Control0..1
This element is affected by the following invariants: vsd-1, vsd-2
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
100. ValueSet.compose.include.version
Definition

The version of the code system that the codes are selected from, or the special version '*' for all versions.

ShortSpecific version of the code system referred to
Comments

This is used when selecting the descendants of a concept - they may change between versions. If no version is specified, then the exact contents of the value set might not be known until a context of use binds it to a particular version. The special value '*' means all versions; It is at server discretion regarding expansions and which versions must be supported.

NoteThis is a business versionId, not a resource version id (see discussion)
Control0..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
102. ValueSet.compose.include.concept
Definition

Specifies a concept to be included or excluded.

ShortA concept defined in the system
Comments

The list of concepts is considered ordered, though the order might not have any particular significance. Typically, the order of an expansion follows that defined in the compose element.

Control0..*
This element is affected by the following invariants: vsd-3
TypeBackboneElement
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
104. ValueSet.compose.include.concept.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
106. ValueSet.compose.include.concept.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
108. ValueSet.compose.include.concept.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
110. ValueSet.compose.include.concept.code
Definition

Specifies a code for the concept to be included or excluded.

ShortCode or expression from system
Comments

Expressions are allowed if defined by the underlying code system.

Control1..1
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
112. ValueSet.compose.include.concept.display
Definition

The text to display to the user for this concept in the context of this valueset. If no display is provided, then applications using the value set use the display specified for the code by the system.

ShortText to display for this code for this value set in this valueset
Comments

The value set resource allows for an alternative display to be specified for when this concept is used in this particular value set. See notes in the value set narrative about the correct use of this element.

Control0..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
114. ValueSet.compose.include.concept.designation
Definition

Additional representations for this concept when used in this value set - other languages, aliases, specialized purposes, used for particular purposes, etc.

ShortAdditional representations for this concept
Comments

Concepts have both a display and an array of designation. The display is equivalent to a special designation with an implied designation.use of "primary code" and a language equal to the Resource Language.

Control0..*
TypeBackboneElement
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
116. ValueSet.compose.include.concept.designation.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
118. ValueSet.compose.include.concept.designation.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
120. ValueSet.compose.include.concept.designation.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
122. ValueSet.compose.include.concept.designation.language
Definition

The language this designation is defined for.

ShortHuman language of the designation
Comments

In the absence of a language, the resource language applies.

Control0..1
BindingThe codes SHOULD be taken from CommonLanguages: A human language.
Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
124. ValueSet.compose.include.concept.designation.use
Definition

A code that represents types of uses of designations.

ShortTypes of uses of designations
Comments

If no use is provided, the designation can be assumed to be suitable for general display to a human user.

Control0..1
BindingUnless not suitable, these codes SHALL be taken from DesignationUse: Details of how a designation would be used.
TypeCoding
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
126. ValueSet.compose.include.concept.designation.value
Definition

The text value for this designation.

ShortThe text value for this designation
Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
128. ValueSet.compose.include.filter
Definition

Select concepts by specify a matching criterion based on the properties (including relationships) defined by the system, or on filters defined by the system. If multiple filters are specified, they SHALL all be true.

ShortSelect codes/concepts by their properties (including relationships)
Comments

Selecting codes by specifying filters based on properties is only possible where the underlying code system defines appropriate properties. Note that in some cases, the underlying code system defines the logical concepts but not the literal codes for the concepts. In such cases, the literal definitions may be provided by a third party.

Control0..*
This element is affected by the following invariants: vsd-3
TypeBackboneElement
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
130. ValueSet.compose.include.filter.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
132. ValueSet.compose.include.filter.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
134. ValueSet.compose.include.filter.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
136. ValueSet.compose.include.filter.property
Definition

A code that identifies a property or a filter defined in the code system.

ShortA property/filter defined by the code system
Control1..1
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
138. ValueSet.compose.include.filter.op
Definition

The kind of operation to perform as a part of the filter criteria.

Short= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | exists
Comments

In case filter.property represents a property of the system, the operation applies to the selected property. In case filter.property represents a filter of the system, the operation SHALL match one of the CodeSystem.filter.operator values.

Control1..1
BindingThe codes SHALL be taken from FilterOperator: The kind of operation to perform as a part of a property based filter.
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
140. ValueSet.compose.include.filter.value
Definition

The match value may be either a code defined by the system, or a string value, which is a regex match on the literal string of the property value (if the filter represents a property defined in CodeSystem) or of the system filter value (if the filter represents a filter defined in CodeSystem) when the operation is 'regex', or one of the values (true and false), when the operation is 'exists'.

ShortCode from the system, or regex criteria, or boolean value for exists
Comments

Use regex matching with care - full regex matching on every SNOMED CT term is prohibitive, for example.

Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
142. ValueSet.compose.include.valueSet
Definition

Selects the concepts found in this value set (based on its value set definition). This is an absolute URI that is a reference to ValueSet.url. If multiple value sets are specified this includes the union of the contents of all of the referenced value sets.

ShortSelect the contents included in this value set
Comments

The value set URI is either a logical reference to a defined value set such as a SNOMED CT reference set, or a direct reference to a value set definition using ValueSet.url. The reference might not refer to an actual FHIR ValueSet resource; in this case, whatever is referred to is an implicit definition of a value set that needs to be clear about how versions are resolved.

Control0..*
This element is affected by the following invariants: vsd-1
Typecanonical(ValueSet)
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
144. ValueSet.compose.exclude
Definition

Exclude one or more codes from the value set based on code system filters and/or other value sets.

ShortExplicitly exclude codes from a code system or other value sets
Comments

Usually this is used to selectively exclude codes that were included by subsumption in the inclusions. Any display names specified for the codes are ignored.

Control0..*
This element is affected by the following invariants: vsd-2
TypeSee ttp://hl7.org/fhir/StructureDefinition/ValueSet#ValueSet.compose.include
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
146. ValueSet.expansion
Definition

A value set can also be "expanded", where the value set is turned into a simple collection of enumerated codes. This element holds the expansion, if it has been performed.

ShortUsed when the value set is "expanded"
Comments

Expansion is performed to produce a collection of codes that are ready to use for data entry or validation. Value set expansions are always considered to be stateless - they are a record of the set of codes in the value set at a point in time under a given set of conditions, and are not subject to ongoing maintenance.

Control0..1
TypeBackboneElement
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
148. ValueSet.expansion.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
150. ValueSet.expansion.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
152. ValueSet.expansion.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
154. ValueSet.expansion.identifier
Definition

An identifier that uniquely identifies this expansion of the valueset, based on a unique combination of the provided parameters, the system default parameters, and the underlying system code system versions etc. Systems may re-use the same identifier as long as those factors remain the same, and the expansion is the same, but are not required to do so. This is a business identifier.

ShortIdentifies the value set expansion (business identifier)
Comments

Typically, this uri is a UUID (e.g. urn:uuid:8230ff20-c97a-4167-a59d-dc2cb9df16dd).

NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..1
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
156. ValueSet.expansion.timestamp
Definition

The time at which the expansion was produced by the expanding system.

ShortTime ValueSet expansion happened
Comments

This SHOULD be a fully populated instant, but in some circumstances, value sets are expanded by hand, and the expansion is published without that precision.

Control1..1
TypedateTime
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
158. ValueSet.expansion.total
Definition

The total number of concepts in the expansion. If the number of concept nodes in this resource is less than the stated number, then the server can return more using the offset parameter.

ShortTotal number of codes in the expansion
Comments

Paging only applies to flat expansions.

Control0..1
Typeinteger
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
160. ValueSet.expansion.offset
Definition

If paging is being used, the offset at which this resource starts. I.e. this resource is a partial view into the expansion. If paging is not being used, this element SHALL NOT be present.

ShortOffset at which this resource starts
Comments

Paging only applies to flat expansions. If a filter is applied, the count is the number of concepts that matched the filter, not the number of concepts in an unfiltered view of the expansion.

Control0..1
Typeinteger
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Meaning if MissingPaging is not being used
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
162. ValueSet.expansion.parameter
Definition

A parameter that controlled the expansion process. These parameters may be used by users of expanded value sets to check whether the expansion is suitable for a particular purpose, or to pick the correct expansion.

ShortParameter that controlled the expansion process
Comments

The server decides which parameters to include here, but at a minimum, the list SHOULD include all of the parameters that affect the $expand operation. If the expansion will be persisted all of these parameters SHALL be included. If the codeSystem on the server has a specified version then this version SHALL be provided as a parameter in the expansion (note that not all code systems have a version).

Control0..*
TypeBackboneElement
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
164. ValueSet.expansion.parameter.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
166. ValueSet.expansion.parameter.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
168. ValueSet.expansion.parameter.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
170. ValueSet.expansion.parameter.name
Definition

Name of the input parameter to the $expand operation; may be a server-assigned name for additional default or other server-supplied parameters used to control the expansion process.

ShortName as assigned by the client or server
Comments

The names are assigned at the discretion of the server.

Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
172. ValueSet.expansion.parameter.value[x]
Definition

The value of the parameter.

ShortValue of the named parameter
Control0..1
TypeChoice of: string, boolean, integer, decimal, uri, code, dateTime
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
174. ValueSet.expansion.contains
Definition

The codes that are contained in the value set expansion.

ShortCodes in the value set
Control0..*
TypeBackboneElement
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
vsd-6: SHALL have a code or a display (code.exists() or display.exists())
vsd-9: Must have a code if not abstract (code.exists() or abstract = true)
vsd-10: Must have a system if a code is present (code.empty() or system.exists())
176. ValueSet.expansion.contains.id
Definition

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

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
178. ValueSet.expansion.contains.extension
Definition

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 manageable, 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.

ShortAdditional content defined by implementations
Comments

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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
180. ValueSet.expansion.contains.modifierExtension
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 manageable, 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.

ShortExtensions that cannot be ignored even if unrecognized
Comments

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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summarytrue
Requirements

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.

Alternate Namesextensions, user content, modifiers
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
182. ValueSet.expansion.contains.system
Definition

An absolute URI which is the code system in which the code for this item in the expansion is defined.

ShortSystem value for the code
Control0..1
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
184. ValueSet.expansion.contains.abstract
Definition

If true, this entry is included in the expansion for navigational purposes, and the user cannot select the code directly as a proper value.

ShortIf user cannot select this entry
Comments

This should not be understood to exclude its use for searching (e.g. by subsumption testing). The client should know whether it is appropriate for the user to select an abstract code or not.

Control0..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Meaning if MissingIf this is not populated, systems can assume that the concept it not abstract. This SHALL always be populated for abstract concepts
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
186. ValueSet.expansion.contains.inactive
Definition

If the concept is inactive in the code system that defines it. Inactive codes are those that are no longer to be used, but are maintained by the code system for understanding legacy data. It might not be known or specified whether an concept is inactive (and it may depend on the context of use).

ShortIf concept is inactive in the code system
Comments

This should only have a value if the concept is inactive.

Control0..1
Typeboolean
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
188. ValueSet.expansion.contains.version
Definition

The version of the code system from this code was taken. 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.

ShortVersion in which this code/display is defined
Comments

The exact value of the version string is specified by the system from which the code is derived.

NoteThis is a business versionId, not a resource version id (see discussion)
Control0..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
190. ValueSet.expansion.contains.code
Definition

The code for this item in the expansion hierarchy. If this code is missing the entry in the hierarchy is a place holder (abstract) and does not represent a valid code in the value set.

ShortCode - if blank, this is not a selectable code
Control0..1
This element is affected by the following invariants: vsd-6
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
192. ValueSet.expansion.contains.display
Definition

The recommended display for this item in the expansion.

ShortUser display for the concept
Control0..1
This element is affected by the following invariants: vsd-6
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
194. ValueSet.expansion.contains.designation
Definition

Additional representations for this item - other languages, aliases, specialized purposes, used for particular purposes, etc. These are relevant when the conditions of the expansion do not fix to a single correct representation.

ShortAdditional representations for this item
Comments

The designations provided must be based on the value set and code system definitions.

Control0..*
TypeSee ttp://hl7.org/fhir/StructureDefinition/ValueSet#ValueSet.compose.include.concept.designation
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
196. ValueSet.expansion.contains.contains
Definition

Other codes and entries contained under this entry in the hierarchy.

ShortCodes contained under this entry
Comments

If the expansion uses this element, there is no implication about the logical relationship between them, and the structure cannot be used for logical inferencing. The structure exists to provide navigational assistance for helping human users to locate codes in the expansion.

Control0..*
TypeSee ttp://hl7.org/fhir/StructureDefinition/ValueSet#ValueSet.expansion.contains
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))