FHIR CI-Build

This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
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Vocabulary icon Work GroupMaturity Level: N Normative (from v4.0.0)Security Category: Anonymous Compartments: Not linked to any defined compartments

Detailed Descriptions for the elements in the ValueSet resource.

ValueSet
Element IdValueSet
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.

Short DisplayA set of codes drawn from one or more code systems
Cardinality0..*
TypeMetadataResource
Summaryfalse
Invariants
Defined on this element
cnl-0Warning Name should be usable as an identifier for the module by machine processing applications such as code generationname.exists() implies name.matches('[A-Z]([A-Za-z0-9_]){1,254}')
ValueSet.url
Element IdValueSet.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 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.

Short DisplayCanonical identifier for this value set, represented as a URI (globally unique)
Cardinality0..1
Typeuri
Requirements

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

Summarytrue
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.

Invariants
Defined on this element
cnl-1Warning URL should not contain | or # - these characters make processing canonical references problematicurl.matches('([^|#])*')
ValueSet.identifier
Element IdValueSet.identifier
Definition

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.

Short DisplayAdditional identifier for the value set (business identifier)
NoteThis is a business identifier, not a resource identifier (see discussion)
Cardinality0..*
TypeIdentifier
Requirements

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

Summarytrue
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.

ValueSet.version
Element IdValueSet.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.

Short DisplayBusiness version of the value set
NoteThis is a business versionId, not a resource version id (see discussion)
Cardinality0..1
Typestring
Summarytrue
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]. The version SHOULD NOT contain a '#' - see Business Version.

ValueSet.name
Element IdValueSet.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.

Short DisplayName for this value set (computer friendly)
Cardinality0..1
Typestring
Requirements

Support human navigation and code generation.

Summarytrue
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.

Invariants
Affect this element
cnl-0Warning Name should be usable as an identifier for the module by machine processing applications such as code generationname.exists() implies name.matches('[A-Z]([A-Za-z0-9_]){1,254}')
ValueSet.title
Element IdValueSet.title
Definition

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

Short DisplayName for this value set (human friendly)
Cardinality0..1
Typestring
Summarytrue
Comments

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

ValueSet.status
Element IdValueSet.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.

Short Displaydraft | active | retired | unknown
Cardinality1..1
Terminology BindingPublicationStatus (Required)
Typecode
Is Modifiertrue (Reason: This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration)
Summarytrue
Comments

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

ValueSet.experimental
Element IdValueSet.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.

Short DisplayFor testing purposes, not real usage
Cardinality0..1
Typeboolean
Meaning if MissingIf absent, this resource is treated as though it is not experimental.
Requirements

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

Summarytrue
Comments

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

ValueSet.date
Element IdValueSet.date
Definition

The date (and optionally time) when the value set metadata or content logical definition (.compose) was created or revised.

Short DisplayDate last changed
Cardinality0..1
TypedateTime
Alternate NamesRevision Date
Summarytrue
Comments

Note that this is not the same as the meta.lastUpdated which is specific to an instance of a value set resource on a server. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

ValueSet.publisher
Element IdValueSet.publisher
Definition

The name of the organization or individual responsible for the release and ongoing maintenance of the value set.

Short DisplayName of the publisher/steward (organization or individual)
Cardinality0..1
Typestring
Requirements

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

Summarytrue
Comments

Usually an organization but may be an individual. 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.

ValueSet.contact
Element IdValueSet.contact
Definition

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

Short DisplayContact details for the publisher
Cardinality0..*
TypeContactDetail
Summarytrue
Comments

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

ValueSet.description
Element IdValueSet.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.

Short DisplayNatural language description of the value set
Cardinality0..1
Typemarkdown
Summaryfalse
Comments

Description SHOULD contain instructions for clinical or administrative use and interpretation and information about misuse. Description SHOULD be populated unless the information is available from context. Description SHOULD be populated unless the value set is a contained resource (e.g. a value set defined solely in the context of a profile).

ValueSet.useContext
Element IdValueSet.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.

Short DisplayThe context that the content is intended to support
Cardinality0..*
TypeUsageContext
Requirements

Assist in searching for appropriate content.

Summarytrue
Comments

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

ValueSet.jurisdiction
Element IdValueSet.jurisdiction
Definition

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

Short DisplayIntended jurisdiction for value set (if applicable)
Cardinality0..*
Terminology BindingJurisdiction ValueSet (Extensible)
TypeCodeableConcept
Summarytrue
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.

ValueSet.immutable
Element IdValueSet.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.

Short DisplayIndicates whether or not any change to the content logical definition may occur
Cardinality0..1
Typeboolean
Summarytrue
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.

ValueSet.purpose
Element IdValueSet.purpose
Definition

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

Short DisplayWhy this value set is defined
Cardinality0..1
Typemarkdown
Summaryfalse
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.

ValueSet.copyright
Element IdValueSet.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.

Short DisplayUse and/or publishing restrictions
Cardinality0..1
Typemarkdown
Requirements

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

Alternate NamesLicense; Restrictions
Summaryfalse
Comments

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

ValueSet.approvalDate
Element IdValueSet.approvalDate
Definition

The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.

Short DisplayWhen the ValueSet was approved by publisher
Cardinality0..1
Typedate
Summaryfalse
Comments

The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

ValueSet.lastReviewDate
Element IdValueSet.lastReviewDate
Definition

The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date.

Short DisplayWhen the ValueSet was last reviewed
Cardinality0..1
Typedate
Requirements

Gives a sense of how "current" the content is. Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant.

Summaryfalse
Comments

If specified, this date follows the original approval date.

ValueSet.effectivePeriod
Element IdValueSet.effectivePeriod
Definition

The period during which the ValueSet content was or is planned to be in active use.

Short DisplayWhen the ValueSet is expected to be used
Cardinality0..1
TypePeriod
Requirements

Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the ValueSet are or are expected to be used instead.

Summarytrue
Comments

The effective period for a ValueSet determines when the content is applicable for usage and is independent of publication and review dates. For example, a valueset intended to be used for the year 2016 might be published in 2015.

ValueSet.topic
Element IdValueSet.topic
Definition

Descriptions related to the content of the ValueSet. Topics provide a high-level categorization as well as keywords for the ValueSet that can be useful for filtering and searching.

Short DisplayE.g. Education, Treatment, Assessment, etc.
Cardinality0..*
Terminology BindingDefinitionTopic (Example)
TypeCodeableConcept
Requirements

Repositories must be able to determine how to categorize the ValueSet so that it can be found by topical and keyword searches.

Summaryfalse
Comments

This element provides topical categorization and keywords for the ValueSet, as opposed to the more structured context-of-use information provided in the useContext element

ValueSet.author
Element IdValueSet.author
Definition

An individiual or organization primarily involved in the creation and maintenance of the ValueSet.

Short DisplayWho authored the ValueSet
Cardinality0..*
TypeContactDetail
Summaryfalse
ValueSet.editor
Element IdValueSet.editor
Definition

An individual or organization primarily responsible for internal coherence of the ValueSet.

Short DisplayWho edited the ValueSet
Cardinality0..*
TypeContactDetail
Summaryfalse
ValueSet.reviewer
Element IdValueSet.reviewer
Definition

An individual or organization primarily responsible for review of some aspect of the ValueSet.

Short DisplayWho reviewed the ValueSet
Cardinality0..*
TypeContactDetail
Summaryfalse
ValueSet.endorser
Element IdValueSet.endorser
Definition

An individual or organization responsible for officially endorsing the ValueSet for use in some setting.

Short DisplayWho endorsed the ValueSet
Cardinality0..*
TypeContactDetail
Summaryfalse
ValueSet.relatedArtifact
Element IdValueSet.relatedArtifact
Definition

Related artifacts such as additional documentation, justification, dependencies, bibliographic references, and predecessor and successor artifacts.

Short DisplayAdditional documentation, citations, etc.
Cardinality0..*
TypeRelatedArtifact
Requirements

A ValueSet must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content.

Summaryfalse
Comments

Each related artifact is either an attachment, or a reference to another resource, but not both.

ValueSet.compose
Element IdValueSet.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).

Short DisplayContent logical definition of the value set (CLD)
Cardinality0..1
Alternate NamesContent Logical Definition; CLD
Summaryfalse
ValueSet.compose.lockedDate
Element IdValueSet.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.

Short DisplayFixed date for references with no specified version (transitive)
Cardinality0..1
Typedate
Summarytrue
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.

ValueSet.compose.inactive
Element IdValueSet.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).

Short DisplayWhether inactive codes are in the value set
Cardinality0..1
Typeboolean
Summarytrue
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.

The Value Set Definition specification defines an ActiveOnly element, which is the reverse of this element e.g. (ValueSet.compose.inactive=FALSE) is the same as (VSD.ActiveOnly=TRUE).

ValueSet.compose.include
Element IdValueSet.compose.include
Definition

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

Short DisplayInclude one or more codes from a code system or other value set(s)
Cardinality1..*
Summarytrue
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'.

Invariants
Defined on this element
vsd-1Rule A value set include/exclude SHALL have a value set or a systemvalueSet.exists() or system.exists()
vsd-2Rule A value set with concepts or filters SHALL include a system(concept.exists() or filter.exists()) implies system.exists()
vsd-3Rule Cannot have both concept and filterconcept.empty() or filter.empty()
ValueSet.compose.include.system
Element IdValueSet.compose.include.system
Definition

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

Short DisplayThe system the codes come from
Cardinality0..1
Typeuri
Summarytrue
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.

Invariants
Affect this element
vsd-1Rule A value set include/exclude SHALL have a value set or a systemvalueSet.exists() or system.exists()
vsd-2Rule A value set with concepts or filters SHALL include a system(concept.exists() or filter.exists()) implies system.exists()
ValueSet.compose.include.version
Element IdValueSet.compose.include.version
Definition

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

Short DisplaySpecific version of the code system referred to
NoteThis is a business versionId, not a resource version id (see discussion)
Cardinality0..1
Typestring
Summarytrue
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.

ValueSet.compose.include.concept
Element IdValueSet.compose.include.concept
Definition

Specifies a concept to be included or excluded.

Short DisplayA concept defined in the system
Cardinality0..*
Summaryfalse
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.

Invariants
Affect this element
vsd-3Rule Cannot have both concept and filterconcept.empty() or filter.empty()
ValueSet.compose.include.concept.code
Element IdValueSet.compose.include.concept.code
Definition

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

Short DisplayCode or expression from system
Cardinality1..1
Typecode
Summaryfalse
Comments

Expressions are allowed if defined by the underlying code system.

ValueSet.compose.include.concept.display
Element IdValueSet.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.

Short DisplayText to display for this code for this value set in this valueset
Cardinality0..1
Typestring
Summaryfalse
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.

ValueSet.compose.include.concept.designation
Element IdValueSet.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.

Short DisplayAdditional representations for this concept
Cardinality0..*
Summaryfalse
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.

Invariants
Defined on this element
vsd-11Rule Must have a value for concept.designation.use if concept.designation.additionalUse is presentadditionalUse.exists() implies use.exists()
ValueSet.compose.include.concept.designation.language
Element IdValueSet.compose.include.concept.designation.language
Definition

The language this designation is defined for.

Short DisplayHuman language of the designation
Cardinality0..1
Terminology BindingCommon Languages (Preferred but limited to All Languages)
Typecode
Summaryfalse
Comments

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

ValueSet.compose.include.concept.designation.use
Element IdValueSet.compose.include.concept.designation.use
Definition

A code that represents types of uses of designations.

Short DisplayTypes of uses of designations
Cardinality0..1
Terminology BindingDesignation Use (Extensible)
TypeCoding
Summaryfalse
Comments

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

ValueSet.compose.include.concept.designation.additionalUse
Element IdValueSet.compose.include.concept.designation.additionalUse
Definition

Additional codes that detail how this designation would be used, if there is more than one use.

Short DisplayAdditional ways how this designation would be used
Cardinality0..*
Terminology BindingDesignation Use (Extensible)
TypeCoding
Summaryfalse
Comments

This was added rather than increasing the cardinality of .use to 0..* in order to maintain backward compatibility.

ValueSet.compose.include.concept.designation.value
Element IdValueSet.compose.include.concept.designation.value
Definition

The text value for this designation.

Short DisplayThe text value for this designation
Cardinality1..1
Typestring
Summaryfalse
ValueSet.compose.include.filter
Element IdValueSet.compose.include.filter
Definition

Select concepts by specifying 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 within the include, they SHALL all be true.

Short DisplaySelect codes/concepts by their properties (including relationships)
Cardinality0..*
Summarytrue
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.

Invariants
Affect this element
vsd-3Rule Cannot have both concept and filterconcept.empty() or filter.empty()
ValueSet.compose.include.filter.property
Element IdValueSet.compose.include.filter.property
Definition

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

Short DisplayA property/filter defined by the code system
Cardinality1..1
Typecode
Summarytrue
ValueSet.compose.include.filter.op
Element IdValueSet.compose.include.filter.op
Definition

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

Short Display= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists
Cardinality1..1
Terminology BindingFilterOperator (Required)
Typecode
Summarytrue
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.

ValueSet.compose.include.filter.value
Element IdValueSet.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'.

Short DisplayCode from the system, or regex criteria, or boolean value for exists
Cardinality1..1
Typestring
Summarytrue
Comments

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

ValueSet.compose.include.valueSet
Element IdValueSet.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 intersection of the contents of all of the referenced value sets.

Short DisplaySelect the contents included in this value set
Cardinality0..*
Typecanonical(ValueSet)
Summarytrue
Comments

The value set URI is either a logical reference to a defined value set such as a SNOMED CT reference set icon, 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.

Invariants
Affect this element
vsd-1Rule A value set include/exclude SHALL have a value set or a systemvalueSet.exists() or system.exists()
ValueSet.compose.include.copyright
Element IdValueSet.compose.include.copyright
Definition

A copyright statement for the specific code system asserted by the containing ValueSet.compose.include element's system value (if the associated ValueSet.compose.include.version element is not present); or the code system and version combination (if the associated ValueSet.compose.include.version element is present).

Short DisplayA copyright statement for the specific code system included in the value set
Cardinality0..1
Typestring
Summaryfalse
ValueSet.compose.exclude
Element IdValueSet.compose.exclude
Definition

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

Short DisplayExplicitly exclude codes from a code system or other value sets
Cardinality0..*
TypeSee ValueSet.compose.include
Summaryfalse
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.

Invariants
Affect this element
vsd-2Rule A value set with concepts or filters SHALL include a system(concept.exists() or filter.exists()) implies system.exists()
ValueSet.compose.property
Element IdValueSet.compose.property
Definition

A property to return in the expansion, if the client doesn't ask for any particular properties. May be either a code from the code system definition (convenient) or a the formal URI that refers to the property. The special value '*' means all properties known to the server.

Short DisplayProperty to return if client doesn't override
Cardinality0..*
Typestring
Summaryfalse
Comments

Note that property names can clash, so using a URI is recommended.

ValueSet.expansion
Element IdValueSet.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.

Short DisplayUsed when the value set is "expanded"
Cardinality0..1
Summaryfalse
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.

Expansion.parameter is a simplified list of parameters - a subset of the features of the Parameters resource.

ValueSet.expansion.identifier
Element IdValueSet.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.

Short DisplayIdentifies the value set expansion (business identifier)
NoteThis is a business identifier, not a resource identifier (see discussion)
Cardinality0..1
Typeuri
Summaryfalse
Comments

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

ValueSet.expansion.next
Element IdValueSet.expansion.next
Definition

As per paging Search results, the next URLs are opaque to the client, have no dictated structure, and only the server understands them.

Short DisplayOpaque urls for paging through expansion results
Cardinality0..1
Typeuri
Summaryfalse
Comments

Clients SHOULD use the next link, if present, to page through expansion results in preference to using the offset and count parameters. Due to the optional nature of the next link, its absence does not necessarily indicate that it is the last page of results. Instead, as the offset and count parameters SHALL be populated when paging, clients can reliably use the count/offset parameters to determine whether the whole expansion is returned.

ValueSet.expansion.timestamp
Element IdValueSet.expansion.timestamp
Definition

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

Short DisplayTime ValueSet expansion happened
Cardinality1..1
TypedateTime
Summaryfalse
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.

ValueSet.expansion.total
Element IdValueSet.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.

Short DisplayTotal number of codes in the expansion
Cardinality0..1
Typeinteger
Summaryfalse
Comments

Paging only applies to flat expansions.

ValueSet.expansion.offset
Element IdValueSet.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.

Short DisplayOffset at which this resource starts
Cardinality0..1
Typeinteger
Meaning if MissingPaging is not being used
Summaryfalse
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.

ValueSet.expansion.parameter
Element IdValueSet.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.

Short DisplayParameter that controlled the expansion process
Cardinality0..*
Summaryfalse
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).

ValueSet.expansion.parameter.name
Element IdValueSet.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.

Short DisplayName as assigned by the client or server
Cardinality1..1
Typestring
Summaryfalse
Comments

The names are assigned at the discretion of the server.

ValueSet.expansion.parameter.value[x]
Element IdValueSet.expansion.parameter.value[x]
Definition

The value of the parameter.

Short DisplayValue of the named parameter
Cardinality0..1
Typestring|boolean|integer|decimal|uri|code|dateTime
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Summaryfalse
ValueSet.expansion.property
Element IdValueSet.expansion.property
Definition

A property defines an additional slot through which additional information can be provided about a concept.

Short DisplayAdditional information supplied about each concept
Cardinality0..*
Summaryfalse
ValueSet.expansion.property.code
Element IdValueSet.expansion.property.code
Definition

A code that is used to identify the property. The code is used in ValueSet.expansion.contains.property.code.

Short DisplayIdentifies the property on the concepts, and when referred to in operations
Cardinality1..1
Typecode
Summaryfalse
ValueSet.expansion.property.uri
Element IdValueSet.expansion.property.uri
Definition

Reference to the formal meaning of the property. One possible source of meaning is the Concept Properties code system.

Short DisplayFormal identifier for the property
Cardinality0..1
Typeuri
Summaryfalse
ValueSet.expansion.contains
Element IdValueSet.expansion.contains
Definition

The codes that are contained in the value set expansion.

Short DisplayCodes in the value set
Cardinality0..*
Summaryfalse
Invariants
Defined on this element
vsd-6Rule SHALL have a code or a displaycode.exists() or display.exists()
vsd-9Rule SHALL have a code if not abstractcode.exists() or abstract = true
vsd-10Rule SHALL have a system if a code is presentcode.empty() or system.exists()
ValueSet.expansion.contains.system
Element IdValueSet.expansion.contains.system
Definition

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

Short DisplaySystem value for the code
Cardinality0..1
Typeuri
Summaryfalse
ValueSet.expansion.contains.abstract
Element IdValueSet.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.

Short DisplayIf user cannot select this entry
Cardinality0..1
Typeboolean
Meaning if MissingIf this is not populated, systems can assume that the concept it not abstract. This SHALL always be populated for abstract concepts
Summaryfalse
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.

ValueSet.expansion.contains.inactive
Element IdValueSet.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).

Short DisplayIf concept is inactive in the code system
Cardinality0..1
Typeboolean
Summaryfalse
Comments

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

ValueSet.expansion.contains.version
Element IdValueSet.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.

Short DisplayVersion in which this code/display is defined
NoteThis is a business versionId, not a resource version id (see discussion)
Cardinality0..1
Typestring
Summaryfalse
Comments

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

ValueSet.expansion.contains.code
Element IdValueSet.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.

Short DisplayCode - if blank, this is not a selectable code
Cardinality0..1
Typecode
Summaryfalse
Invariants
Affect this element
vsd-6Rule SHALL have a code or a displaycode.exists() or display.exists()
ValueSet.expansion.contains.display
Element IdValueSet.expansion.contains.display
Definition

The recommended display for this item in the expansion.

Short DisplayUser display for the concept
Cardinality0..1
Typestring
Summaryfalse
Invariants
Affect this element
vsd-6Rule SHALL have a code or a displaycode.exists() or display.exists()
ValueSet.expansion.contains.designation
Element IdValueSet.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.

Short DisplayAdditional representations for this item
Cardinality0..*
TypeSee ValueSet.compose.include.concept.designation
Summaryfalse
Comments

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

ValueSet.expansion.contains.property
Element IdValueSet.expansion.contains.property
Definition

A property value for this concept.

Short DisplayProperty value for the concept
Cardinality0..*
Summaryfalse
ValueSet.expansion.contains.property.code
Element IdValueSet.expansion.contains.property.code
Definition

A code that is a reference to ValueSet.expansion.property.code.

Short DisplayReference to ValueSet.expansion.property.code
Cardinality1..1
Typecode
Summaryfalse
ValueSet.expansion.contains.property.value[x]
Element IdValueSet.expansion.contains.property.value[x]
Definition

The value of this property.

Short DisplayValue of the property for this concept
Cardinality1..1
Typecode|Coding|string|integer|boolean|dateTime|decimal
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Summaryfalse
ValueSet.expansion.contains.property.subProperty
Element IdValueSet.expansion.contains.property.subProperty
Definition

A subproperty value for this concept.

Short DisplaySubProperty value for the concept
Cardinality0..*
Summaryfalse
ValueSet.expansion.contains.property.subProperty.code
Element IdValueSet.expansion.contains.property.subProperty.code
Definition

A code that is a reference to ValueSet.expansion.property.code.

Short DisplayReference to ValueSet.expansion.property.code
Cardinality1..1
Typecode
Summaryfalse
ValueSet.expansion.contains.property.subProperty.value[x]
Element IdValueSet.expansion.contains.property.subProperty.value[x]
Definition

The value of this subproperty.

Short DisplayValue of the subproperty for this concept
Cardinality1..1
Typecode|Coding|string|integer|boolean|dateTime|decimal
[x] NoteSee Choice of Datatypes for further information about how to use [x]
Summaryfalse
ValueSet.expansion.contains.contains
Element IdValueSet.expansion.contains.contains
Definition

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

Short DisplayCodes contained under this entry
Cardinality0..*
TypeSee ValueSet.expansion.contains
Summaryfalse
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.

ValueSet.scope
Element IdValueSet.scope
Definition

Description of the semantic space the Value Set Expansion is intended to cover and should further clarify the text in ValueSet.description.

Short DisplayDescription of the semantic space the Value Set Expansion is intended to cover and should further clarify the text in ValueSet.description
Cardinality0..1
Summaryfalse
ValueSet.scope.inclusionCriteria
Element IdValueSet.scope.inclusionCriteria
Definition

Criteria describing which concepts or codes should be included and why.

Short DisplayCriteria describing which concepts or codes should be included and why
Cardinality0..1
Typestring
Summaryfalse
ValueSet.scope.exclusionCriteria
Element IdValueSet.scope.exclusionCriteria
Definition

Criteria describing which concepts or codes should be excluded and why.

Short DisplayCriteria describing which concepts or codes should be excluded and why
Cardinality0..1
Typestring
Summaryfalse