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<StructureDefinition xmlns="http://hl7.org/fhir">
 <id value="composed-value-set-4" />
 <meta>
 <versionId value="1" />
 <lastUpdated value="2022-02-20T21:58:08.475+00:00" />
 </meta>
 <text>
 <status value="generated" />
 <div xmlns="http://www.w3.org/1999/xhtml">
 <div class="ncts-structure-definition">
 <h1>Ncts_composed_value_set</h1>
 <dl>
 <dt class="bold">URL</dt>
 <dd>
 <a href="https://healthterminologies.gov.au/fhir/StructureDefinition/composed-value-set-4">https://healthterminologies.gov.au/fhir/StructureDefinition/composed-value-set-4</a>
 </dd>
 <dt class="bold">Base Definition</dt>
 <dd>
 <a href="http://hl7.org/fhir/StructureDefinition/ValueSet">http://hl7.org/fhir/StructureDefinition/ValueSet</a>
 </dd>
 <dt class="bold">Status</dt>
 <dd>ACTIVE</dd>
 <dt class="bold">Publisher</dt>
 <dd>Australian Digital Health Agency</dd>
 <dt class="bold">Description</dt>
 <dd>This StructureDefinition describes the NCTS Composed Value Set, a profile of the FHIR&amp;reg; ValueSet resource. The NCTS Composed Value Set is designed to represent value sets published as part of the National Clinical Terminology Service, and maximise interoperability within the NCTS ecosystem.</dd>
 </dl>
 <div>
 <h2>Elements (Snapshot)</h2>
 <table>
 <thead>
 <tr class="header-row">
 <th>Path</th>
 <th>Cardinality</th>
 <th>Type</th>
 <th>Definition</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td>
 ValueSet
 </td>
 <td>0..*</td>
 <td />
 <td>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](http://hl7.org/fhir/R4/codesystem.html) definitions and their use in [coded elements](http://hl7.org/fhir/R4/terminologies.html).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 id
 </td>
 <td>0..1</td>
 <td> id </td>
 <td>The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 meta
 </td>
 <td>0..1</td>
 <td> Meta </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 implicitRules
 </td>
 <td>0..0</td>
 <td> uri </td>
 <td>A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 language
 </td>
 <td>0..1</td>
 <td> code </td>
 <td>The base language in which the resource is written.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 text
 </td>
 <td>1..1</td>
 <td> Narrative </td>
 <td>A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contained
 </td>
 <td>0..0</td>
 <td> Resource </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 url
 </td>
 <td>1..1</td>
 <td> uri </td>
 <td>An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this value set is (or will be) published. The URL SHOULD include the major version of the value set. For more information see [Technical and Business Versions](resource.html#versions).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier
 </td>
 <td>1..*</td>
 <td> Identifier </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 use
 </td>
 <td>0..1</td>
 <td> code </td>
 <td>The purpose of this identifier.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 type
 </td>
 <td>0..1</td>
 <td> CodeableConcept </td>
 <td>A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 system
 </td>
 <td>1..1</td>
 <td> uri </td>
 <td>Establishes the namespace for the value - that is, a URL that describes a set values that are unique.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 value
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>The portion of the identifier typically relevant to the user and which is unique within the context of the system.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 period
 </td>
 <td>0..1</td>
 <td> Period </td>
 <td>Time period during which identifier is/was valid for use.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 identifier.
 assigner
 </td>
 <td>0..1</td>
 <td> Reference </td>
 <td>Organization that issued/manages the identifier.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 version
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 name
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 title
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>A short, descriptive, user-friendly title for the value set.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 status
 </td>
 <td>1..1</td>
 <td> code </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 experimental
 </td>
 <td>1..1</td>
 <td> boolean </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 date
 </td>
 <td>1..1</td>
 <td> dateTime </td>
 <td>The date (and optionally time) when the value set was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the value set changes. (e.g. the 'content logical definition').</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 publisher
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>The name of the individual or organization that published the value set.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contact
 </td>
 <td>0..*</td>
 <td> ContactDetail </td>
 <td>Contact details to assist a user in finding and communicating with the publisher.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contact.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contact.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contact.
 name
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>The name of an individual to contact.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 contact.
 telecom
 </td>
 <td>1..*</td>
 <td> ContactPoint </td>
 <td>The contact details for the individual (if a name was provided) or the organization.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 description
 </td>
 <td>1..1</td>
 <td> markdown </td>
 <td>A free text natural language description of the value set from a consumer's perspective.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 useContext
 </td>
 <td>0..*</td>
 <td> UsageContext </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 jurisdiction
 </td>
 <td>0..*</td>
 <td> CodeableConcept </td>
 <td>A legal or geographic region in which the value set is intended to be used.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 immutable
 </td>
 <td>0..0</td>
 <td> boolean </td>
 <td>If this is set to 'true', then no new versions of the content logical definition can be created. Note: Other metadata might still change.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 purpose
 </td>
 <td>0..0</td>
 <td> markdown </td>
 <td>Explaination of why this value set is needed and why it has been designed as it has.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 copyright
 </td>
 <td>1..1</td>
 <td> markdown </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose
 </td>
 <td>1..1</td>
 <td> BackboneElement </td>
 <td>A set of criteria that define the content logical definition of the value set by including or excluding codes from outside this value set. This I also known as the "Content Logical Definition" (CLD).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 lockedDate
 </td>
 <td>0..0</td>
 <td> date </td>
 <td>If a locked date is defined, then the Content Logical Definition must be evaluated using the current version as of the locked date for referenced code system(s) and value set instances where ValueSet.compose.include.version is not defined.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 inactive
 </td>
 <td>0..1</td>
 <td> boolean </td>
 <td>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).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include
 </td>
 <td>1..*</td>
 <td> BackboneElement </td>
 <td>Include one or more codes from a code system or other value set(s).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 system
 </td>
 <td>0..1</td>
 <td> uri </td>
 <td>An absolute URI which is the code system from which the selected codes come from.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 version
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>The version of the code system that the codes are selected from, or the special version '*' for all versions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept
 </td>
 <td>0..*</td>
 <td> BackboneElement </td>
 <td>Specifies a concept to be included or excluded.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 code
 </td>
 <td>1..1</td>
 <td> code </td>
 <td>Specifies a code for the concept to be included or excluded.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 display
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation
 </td>
 <td>0..*</td>
 <td> BackboneElement </td>
 <td>Additional representations for this concept when used in this value set - other languages, aliases, specialized purposes, used for particular purposes, etc.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 language
 </td>
 <td>0..1</td>
 <td> code </td>
 <td>The language this designation is defined for.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 use
 </td>
 <td>0..1</td>
 <td> Coding </td>
 <td>A code that represents types of uses of designations.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 concept.
 designation.
 value
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>The text value for this designation.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter
 </td>
 <td>0..*</td>
 <td> BackboneElement </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 property
 </td>
 <td>1..1</td>
 <td> code </td>
 <td>A code that identifies a property or a filter defined in the code system.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 op
 </td>
 <td>1..1</td>
 <td> code </td>
 <td>The kind of operation to perform as a part of the filter criteria.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 filter.
 value
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>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'.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 include.
 valueSet
 </td>
 <td>0..*</td>
 <td> canonical </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 compose.
 exclude
 </td>
 <td>0..*</td>
 <td> see ValueSet.compose.include </td>
 <td>Exclude one or more codes from the value set based on code system filters and/or other value sets.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion
 </td>
 <td>0..0</td>
 <td> BackboneElement </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 identifier
 </td>
 <td>0..1</td>
 <td> uri </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 timestamp
 </td>
 <td>1..1</td>
 <td> dateTime </td>
 <td>The time at which the expansion was produced by the expanding system.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 total
 </td>
 <td>0..1</td>
 <td> integer </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 offset
 </td>
 <td>0..1</td>
 <td> integer </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter
 </td>
 <td>0..*</td>
 <td> BackboneElement </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter.
 name
 </td>
 <td>1..1</td>
 <td> string </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 parameter.
 value[x]
 </td>
 <td>0..1</td>
 <td> [ string | boolean | integer | decimal | uri | code | dateTime ] </td>
 <td>The value of the parameter.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains
 </td>
 <td>0..*</td>
 <td> BackboneElement </td>
 <td>The codes that are contained in the value set expansion.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 id
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 extension
 </td>
 <td>0..*</td>
 <td> Extension </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 modifierExtension
 </td>
 <td>0..0</td>
 <td> Extension </td>
 <td>May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 system
 </td>
 <td>0..1</td>
 <td> uri </td>
 <td>An absolute URI which is the code system in which the code for this item in the expansion is defined.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 abstract
 </td>
 <td>0..1</td>
 <td> boolean </td>
 <td>If true, this entry is included in the expansion for navigational purposes, and the user cannot select the code directly as a proper value.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 inactive
 </td>
 <td>0..1</td>
 <td> boolean </td>
 <td>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).</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 version
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 code
 </td>
 <td>0..1</td>
 <td> code </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 display
 </td>
 <td>0..1</td>
 <td> string </td>
 <td>The recommended display for this item in the expansion.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 designation
 </td>
 <td>0..*</td>
 <td> see ValueSet.compose.include.concept.designation </td>
 <td>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.</td>
 </tr>
 <tr>
 <td>
 ValueSet.
 expansion.
 contains.
 contains
 </td>
 <td>0..*</td>
 <td> see ValueSet.expansion.contains </td>
 <td>Other codes and entries contained under this entry in the hierarchy.</td>
 </tr>
 </tbody>
 </table>
 </div>
 </div>
 </div>
 </text>
 <url value="https://healthterminologies.gov.au/fhir/StructureDefinition/composed-value-set-4" />
 <version value="4.0.0" />
 <name value="Ncts_composed_value_set" />
 <title value="NCTS Composed Value Set" />
 <status value="active" />
 <date value="2020-01-31T00:00:00+10:00" />
 <publisher value="Australian Digital Health Agency" />
 <contact>
 <telecom>
 <system value="url" />
 <value value="https://www.healthterminologies.gov.au" />
 </telecom>
 <telecom>
 <system value="email" />
 <value value="help@digitalhealth.gov.au" />
 </telecom>
 </contact>
 <description value="This StructureDefinition describes the NCTS Composed Value Set, a profile of the FHIR&amp;reg; ValueSet resource. The NCTS Composed Value Set is designed to represent value sets published as part of the National Clinical Terminology Service, and maximise interoperability within the NCTS ecosystem." />
 <jurisdiction>
 <coding>
 <system value="http://unstats.un.org/unsd/methods/m49/m49.htm" />
 <code value="036" />
 </coding>
 </jurisdiction>
 <purpose value="The purpose of this profile is to codify a set of general best practices with respect to representing value sets in FHIR, and an opinionated approach to versioning that is compatible with the syndication model that NCTS uses." />
 <fhirVersion value="4.0.1" />
 <mapping>
 <identity value="rim" />
 <uri value="http://hl7.org/v3" />
 <name value="RIM Mapping" />
 </mapping>
 <mapping>
 <identity value="workflow" />
 <uri value="http://hl7.org/fhir/workflow" />
 <name value="Workflow Pattern" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <uri value="http://hl7.org/fhir/fivews" />
 <name value="FiveWs Pattern Mapping" />
 </mapping>
 <mapping>
 <identity value="objimpl" />
 <uri value="http://hl7.org/fhir/object-implementation" />
 <name value="Object Implementation Information" />
 </mapping>
 <kind value="resource" />
 <abstract value="false" />
 <type value="ValueSet" />
 <baseDefinition value="http://hl7.org/fhir/StructureDefinition/ValueSet" />
 <derivation value="constraint" />
 <snapshot>
 <element id="ValueSet">
 <path value="ValueSet" />
 <short value="A set of codes drawn from one or more code systems" />
 <definition value="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](http://hl7.org/fhir/R4/codesystem.html) definitions and their use in [coded elements](http://hl7.org/fhir/R4/terminologies.html)." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet" />
 <min value="0" />
 <max value="*" />
 </base>
 <constraint>
 <key value="dom-2" />
 <severity value="error" />
 <human value="If the resource is contained in another resource, it SHALL NOT contain nested Resources" />
 <expression value="contained.contained.empty()" />
 <xpath value="not(parent::f:contained and f:contained)" />
 <source value="http://hl7.org/fhir/StructureDefinition/DomainResource" />
 </constraint>
 <constraint>
 <key value="dom-3" />
 <severity value="error" />
 <human value="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" />
 <expression value="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()" />
 <xpath value="not(exists(for $id in f:contained/*/f:id/@value return $contained[not(parent::*/descendant::f:reference/@value=concat('#', $contained/*/id/@value) or descendant::f:reference[@value='#'])]))" />
 <source value="http://hl7.org/fhir/StructureDefinition/DomainResource" />
 </constraint>
 <constraint>
 <key value="dom-4" />
 <severity value="error" />
 <human value="If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated" />
 <expression value="contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()" />
 <xpath value="not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))" />
 <source value="http://hl7.org/fhir/StructureDefinition/DomainResource" />
 </constraint>
 <constraint>
 <key value="dom-5" />
 <severity value="error" />
 <human value="If a resource is contained in another resource, it SHALL NOT have a security label" />
 <expression value="contained.meta.security.empty()" />
 <xpath value="not(exists(f:contained/*/f:meta/f:security))" />
 <source value="http://hl7.org/fhir/StructureDefinition/DomainResource" />
 </constraint>
 <constraint>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice">
 <valueBoolean value="true" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation">
 <valueMarkdown value="When a resource has no narrative, only systems that fully understand the data can display the resource to a human safely. Including a human readable representation in the resource makes for a much more robust eco-system and cheaper handling of resources by intermediary systems. Some ecosystems restrict distribution of resources to only those systems that do fully understand the resources, and as a consequence implementers may believe that the narrative is superfluous. However experience shows that such eco-systems often open up to new participants over time." />
 </extension>
 <key value="dom-6" />
 <severity value="warning" />
 <human value="A resource should have narrative for robust management" />
 <expression value="text.`div`.exists()" />
 <xpath value="exists(f:text/h:div)" />
 <source value="http://hl7.org/fhir/StructureDefinition/DomainResource" />
 </constraint>
 <constraint>
 <key value="vsd-0" />
 <severity value="warning" />
 <human value="Name should be usable as an identifier for the module by machine processing applications such as code generation" />
 <expression value="name.matches('[A-Z]([A-Za-z0-9_]){0,254}')" />
 <xpath value="not(exists(f:name/@value)) or matches(f:name/@value, '[A-Z]([A-Za-z0-9_]){0,254}')" />
 <source value="http://hl7.org/fhir/StructureDefinition/ValueSet" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="Entity. Role, or Act" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.id">
 <path value="ValueSet.id" />
 <short value="Logical id of this artifact" />
 <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes." />
 <comment value="The only time that a resource does not have an id is when it is being submitted to the server using a create operation." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Resource.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="id" />
 </type>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.meta">
 <path value="ValueSet.meta" />
 <short value="Metadata about the resource" />
 <definition value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Resource.meta" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="Meta" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.implicitRules">
 <path value="ValueSet.implicitRules" />
 <short value="A set of rules under which this content was created" />
 <definition value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content." />
 <comment value="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." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="Resource.implicitRules" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="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" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.language">
 <path value="ValueSet.language" />
 <short value="Language of the resource content" />
 <definition value="The base language in which the resource is written." />
 <comment value="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)." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Resource.language" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
 <valueCanonical value="http://hl7.org/fhir/ValueSet/all-languages" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="Language" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
 <valueBoolean value="true" />
 </extension>
 <strength value="preferred" />
 <description value="A human language." />
 <valueSet value="http://hl7.org/fhir/ValueSet/languages" />
 </binding>
 </element>
 <element id="ValueSet.text">
 <path value="ValueSet.text" />
 <short value="Text summary of the resource, for human interpretation" />
 <definition value="A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it &quot;clinically safe&quot; for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety." />
 <comment value="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 &quot;text blob&quot; or where text is additionally entered raw or narrated and encoded information is added later." />
 <alias value="narrative" />
 <alias value="html" />
 <alias value="xhtml" />
 <alias value="display" />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="DomainResource.text" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="Narrative" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="Act.text?" />
 </mapping>
 </element>
 <element id="ValueSet.contained">
 <path value="ValueSet.contained" />
 <short value="Contained, inline Resources" />
 <definition value="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." />
 <comment value="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." />
 <alias value="inline resources" />
 <alias value="anonymous resources" />
 <alias value="contained resources" />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="DomainResource.contained" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Resource" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.extension">
 <path value="ValueSet.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="DomainResource.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.modifierExtension">
 <path value="ValueSet.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="DomainResource.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.url">
 <path value="ValueSet.url" />
 <short value="Canonical identifier for this value set, represented as a URI (globally unique)" />
 <definition value="An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this value set is (or will be) published. The URL SHOULD include the major version of the value set. For more information see [Technical and Business Versions](resource.html#versions)." />
 <comment value="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.&#xA;&#xA;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](http://hl7.org/fhir/R4/resource.html#versions). &#xA;&#xA;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](http://hl7.org/fhir/R4/resource.html#meta) element to indicate where the current master source of the resource can be found." />
 <requirements value="Allows the value set to be referenced by a single globally unique identifier." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.url" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.url" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.identifier" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.identifier">
 <path value="ValueSet.identifier" />
 <short value="Additional identifier for the value set (business identifier)" />
 <definition value="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." />
 <comment value="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." />
 <requirements value="Allows externally provided and/or usable business identifiers to be easily associated with the module." />
 <min value="1" />
 <max value="*" />
 <base>
 <path value="ValueSet.identifier" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Identifier" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.identifier" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.identifier" />
 </mapping>
 <mapping>
 <identity value="objimpl" />
 <map value="no-gen-base" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.id">
 <path value="ValueSet.identifier.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.extension">
 <path value="ValueSet.identifier.extension" />
 <slicing>
 <discriminator>
 <type value="value" />
 <path value="url" />
 </discriminator>
 <description value="Extensions are always sliced by (at least) url" />
 <rules value="open" />
 </slicing>
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.use">
 <path value="ValueSet.identifier.use" />
 <short value="usual | official | temp | secondary | old (If known)" />
 <definition value="The purpose of this identifier." />
 <comment value="Applications can assume that an identifier is permanent unless it explicitly says that it is temporary." />
 <requirements value="Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Identifier.use" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="This is labeled as &quot;Is Modifier&quot; because applications should not mistake a temporary id for a permanent one." />
 <isSummary value="true" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="IdentifierUse" />
 </extension>
 <strength value="required" />
 <description value="Identifies the purpose for this identifier, if known ." />
 <valueSet value="http://hl7.org/fhir/ValueSet/identifier-use|4.0.1" />
 </binding>
 <mapping>
 <identity value="v2" />
 <map value="N/A" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="Role.code or implied by context" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.type">
 <path value="ValueSet.identifier.type" />
 <short value="Description of identifier" />
 <definition value="A coded type for the identifier that can be used to determine which identifier to use for a specific purpose." />
 <comment value="This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type." />
 <requirements value="Allows users to make use of identifiers when the identifier system is not known." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Identifier.type" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="CodeableConcept" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="IdentifierType" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
 <valueBoolean value="true" />
 </extension>
 <strength value="extensible" />
 <description value="A coded type for an identifier that can be used to determine which identifier to use for a specific purpose." />
 <valueSet value="http://hl7.org/fhir/ValueSet/identifier-type" />
 </binding>
 <mapping>
 <identity value="v2" />
 <map value="CX.5" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="Role.code or implied by context" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.system">
 <path value="ValueSet.identifier.system" />
 <short value="The namespace for the identifier value" />
 <definition value="Establishes the namespace for the value - that is, a URL that describes a set values that are unique." />
 <comment value="Identifier.system is always case sensitive." />
 <requirements value="There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="Identifier.system" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <fixedUri value="urn:ietf:rfc:3986" />
 <example>
 <label value="General" />
 <valueUri value="http://www.acme.com/identifiers/patient" />
 </example>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="v2" />
 <map value="CX.4 / EI-2-4" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="II.root or Role.id.root" />
 </mapping>
 <mapping>
 <identity value="servd" />
 <map value="./IdentifierType" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.value">
 <path value="ValueSet.identifier.value" />
 <short value="The value that is unique" />
 <definition value="The portion of the identifier typically relevant to the user and which is unique within the context of the system." />
 <comment value="If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the [Rendered Value extension](http://hl7.org/fhir/R4/extension-rendered-value.html). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="Identifier.value" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <example>
 <label value="General" />
 <valueString value="123456" />
 </example>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="v2" />
 <map value="CX.1 / EI.1" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)" />
 </mapping>
 <mapping>
 <identity value="servd" />
 <map value="./Value" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.period">
 <path value="ValueSet.identifier.period" />
 <short value="Time period when id is/was valid for use" />
 <definition value="Time period during which identifier is/was valid for use." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Identifier.period" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="Period" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="v2" />
 <map value="CX.7 + CX.8" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="Role.effectiveTime or implied by context" />
 </mapping>
 <mapping>
 <identity value="servd" />
 <map value="./StartDate and ./EndDate" />
 </mapping>
 </element>
 <element id="ValueSet.identifier.assigner">
 <path value="ValueSet.identifier.assigner" />
 <short value="Organization that issued id (may be just text)" />
 <definition value="Organization that issued/manages the identifier." />
 <comment value="The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Identifier.assigner" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="Reference" />
 <targetProfile value="http://hl7.org/fhir/StructureDefinition/Organization" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="v2" />
 <map value="CX.4 / (CX.4,CX.9,CX.10)" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="II.assigningAuthorityName but note that this is an improper use by the definition of the field. Also Role.scoper" />
 </mapping>
 <mapping>
 <identity value="servd" />
 <map value="./IdentifierIssuingAuthority" />
 </mapping>
 </element>
 <element id="ValueSet.version">
 <path value="ValueSet.version" />
 <short value="Business version of the value set" />
 <definition value="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." />
 <comment value="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]." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.version" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.version" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.version" />
 </mapping>
 </element>
 <element id="ValueSet.name">
 <path value="ValueSet.name" />
 <short value="Name for this value set (computer friendly)" />
 <definition value="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." />
 <comment value="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." />
 <requirements value="Support human navigation and code generation." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.name" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <condition value="inv-0" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.title">
 <path value="ValueSet.title" />
 <short value="Name for this value set (human friendly)" />
 <definition value="A short, descriptive, user-friendly title for the value set." />
 <comment value="This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.title" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.title" />
 </mapping>
 </element>
 <element id="ValueSet.status">
 <path value="ValueSet.status" />
 <short value="draft | active | retired | unknown" />
 <definition value="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." />
 <comment value="Allows filtering of value sets that are appropriate for use versus not.See also the [valueset-workflowStatus](http://hl7.org/fhir/R4/extension-valueset-workflowstatus.html) extension for additional status information related to the editorial process." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.status" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="This is labeled as &quot;Is Modifier&quot; because applications should not use a retired {{title}} without due consideration" />
 <isSummary value="true" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="PublicationStatus" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
 <valueBoolean value="true" />
 </extension>
 <strength value="required" />
 <description value="The lifecycle status of an artifact." />
 <valueSet value="http://hl7.org/fhir/ValueSet/publication-status|4.0.1" />
 </binding>
 <mapping>
 <identity value="workflow" />
 <map value="Definition.status" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.status" />
 </mapping>
 </element>
 <element id="ValueSet.experimental">
 <path value="ValueSet.experimental" />
 <short value="For testing purposes, not real usage" />
 <definition value="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." />
 <comment value="Allows filtering of value sets that are appropriate for use versus not." />
 <requirements value="Enables experimental content to be developed following the same lifecycle that would be used for a production-level value set." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.experimental" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="boolean" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.experimental" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.class" />
 </mapping>
 </element>
 <element id="ValueSet.date">
 <path value="ValueSet.date" />
 <short value="Date last changed" />
 <definition value="The date (and optionally time) when the value set was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the value set changes. (e.g. the 'content logical definition')." />
 <comment value="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." />
 <alias value="Revision Date" />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.date" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="dateTime" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.date" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.recorded" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.publisher">
 <path value="ValueSet.publisher" />
 <short value="Name of the publisher (organization or individual)" />
 <definition value="The name of the individual or organization that published the value set." />
 <comment value="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." />
 <requirements value="Helps establish the &quot;authority/credibility&quot; of the value set. May also allow for contact." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.publisher" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.publisher" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.witness" />
 </mapping>
 </element>
 <element id="ValueSet.contact">
 <path value="ValueSet.contact" />
 <short value="Contact details for the publisher" />
 <definition value="Contact details to assist a user in finding and communicating with the publisher." />
 <comment value="May be a web site, an email address, a telephone number, etc." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.contact" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="ContactDetail" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.contact" />
 </mapping>
 </element>
 <element id="ValueSet.contact.id">
 <path value="ValueSet.contact.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.contact.extension">
 <path value="ValueSet.contact.extension" />
 <slicing>
 <discriminator>
 <type value="value" />
 <path value="url" />
 </discriminator>
 <description value="Extensions are always sliced by (at least) url" />
 <rules value="open" />
 </slicing>
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.contact.name">
 <path value="ValueSet.contact.name" />
 <short value="Name of an individual to contact" />
 <definition value="The name of an individual to contact." />
 <comment value="If there is no named individual, the telecom information is for the organization as a whole." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ContactDetail.name" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.contact.telecom">
 <path value="ValueSet.contact.telecom" />
 <short value="Contact details for individual or organization" />
 <definition value="The contact details for the individual (if a name was provided) or the organization." />
 <min value="1" />
 <max value="*" />
 <base>
 <path value="ContactDetail.telecom" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="ContactPoint" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.description">
 <path value="ValueSet.description" />
 <short value="Natural language description of the value set" />
 <definition value="A free text natural language description of the value set from a consumer's perspective." />
 <comment value="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." />
 <alias value="Scope" />
 <alias value="Purpose" />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.description" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="markdown" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.description" />
 </mapping>
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.useContext">
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
 <valueCode value="trial-use" />
 </extension>
 <path value="ValueSet.useContext" />
 <short value="The context that the content is intended to support" />
 <definition value="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." />
 <comment value="When multiple useContexts are specified, there is no expectation that all or any of the contexts apply." />
 <requirements value="Assist in searching for appropriate content." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.useContext" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="UsageContext" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.useContext" />
 </mapping>
 </element>
 <element id="ValueSet.jurisdiction">
 <path value="ValueSet.jurisdiction" />
 <short value="Intended jurisdiction for value set (if applicable)" />
 <definition value="A legal or geographic region in which the value set is intended to be used." />
 <comment value="It may be possible for the value set to be used in jurisdictions other than those for which it was originally designed or intended." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.jurisdiction" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="CodeableConcept" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="Jurisdiction" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
 <valueBoolean value="true" />
 </extension>
 <strength value="extensible" />
 <description value="Countries and regions within which this artifact is targeted for use." />
 <valueSet value="http://hl7.org/fhir/ValueSet/jurisdiction" />
 </binding>
 <mapping>
 <identity value="workflow" />
 <map value="Definition.jurisdiction" />
 </mapping>
 </element>
 <element id="ValueSet.immutable">
 <path value="ValueSet.immutable" />
 <short value="Indicates whether or not any change to the content logical definition may occur" />
 <definition value="If this is set to 'true', then no new versions of the content logical definition can be created. Note: Other metadata might still change." />
 <comment value="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 &quot;All specializations of ACT in ActClassCode&quot; - Where there's no safe way to express the &quot;Purpose&quot; 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." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="ValueSet.immutable" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="boolean" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.purpose">
 <path value="ValueSet.purpose" />
 <short value="Why this value set is defined" />
 <definition value="Explaination of why this value set is needed and why it has been designed as it has." />
 <comment value="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." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="ValueSet.purpose" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="markdown" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.purpose" />
 </mapping>
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.why[x]" />
 </mapping>
 <mapping>
 <identity value="objimpl" />
 <map value="no-gen-base" />
 </mapping>
 </element>
 <element id="ValueSet.copyright">
 <path value="ValueSet.copyright" />
 <short value="Use and/or publishing restrictions" />
 <definition value="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." />
 <comment value="nullFrequently, the copyright differs between the value set and the codes that are included. The copyright statement should clearly differentiate between these when required." />
 <requirements value="Consumers must be able to determine any legal restrictions on the use of the value set and/or its content." />
 <alias value="License" />
 <alias value="Restrictions" />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.copyright" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="markdown" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="workflow" />
 <map value="Definition.copyright" />
 </mapping>
 <mapping>
 <identity value="objimpl" />
 <map value="no-gen-base" />
 </mapping>
 </element>
 <element id="ValueSet.compose">
 <path value="ValueSet.compose" />
 <short value="Content logical definition of the value set (CLD)" />
 <definition value="A set of criteria that define the content logical definition of the value set by including or excluding codes from outside this value set. This I also known as the &quot;Content Logical Definition&quot; (CLD)." />
 <alias value="Content Logical Definition" />
 <alias value="CLD" />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.compose.id">
 <path value="ValueSet.compose.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.extension">
 <path value="ValueSet.compose.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.modifierExtension">
 <path value="ValueSet.compose.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.lockedDate">
 <path value="ValueSet.compose.lockedDate" />
 <short value="Fixed date for references with no specified version (transitive)" />
 <definition value="If a locked date is defined, then the Content Logical Definition must be evaluated using the current version as of the locked date for referenced code system(s) and value set instances where ValueSet.compose.include.version is not defined." />
 <comment value="With a defined lockedDate the value set is considered &quot;Locked&quot;. 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." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="ValueSet.compose.lockedDate" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="date" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="w5" />
 <map value="FiveWs.init" />
 </mapping>
 </element>
 <element id="ValueSet.compose.inactive">
 <path value="ValueSet.compose.inactive" />
 <short value="Whether inactive codes are in the value set" />
 <definition value="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)." />
 <comment value="Note that in the FHIR terminology framework, &quot;deprecated&quot; does not mean inactive, but in some code systems, e.g. LOINC, &quot;deprecated&quot; 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.&#xA;&#xA;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)." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.inactive" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="boolean" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.include">
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">
 <valueString value="ConceptSet" />
 </extension>
 <path value="ValueSet.compose.include" />
 <short value="Include one or more codes from a code system or other value set(s)" />
 <definition value="Include one or more codes from a code system or other value set(s)." />
 <comment value="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'." />
 <min value="1" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.include" />
 <min value="1" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="vsd-1" />
 <severity value="error" />
 <human value="A value set include/exclude SHALL have a value set or a system" />
 <expression value="valueSet.exists() or system.exists()" />
 <xpath value="exists(f:valueSet) or exists(f:system)" />
 </constraint>
 <constraint>
 <key value="vsd-2" />
 <severity value="error" />
 <human value="A value set with concepts or filters SHALL include a system" />
 <expression value="(concept.exists() or filter.exists()) implies system.exists()" />
 <xpath value="not(exists(f:concept) or exists(f:filter)) or exists(f:system)" />
 </constraint>
 <constraint>
 <key value="vsd-3" />
 <severity value="error" />
 <human value="Cannot have both concept and filter" />
 <expression value="concept.empty() or filter.empty()" />
 <xpath value="not(exists(f:concept)) or not(exists(f:filter))" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.id">
 <path value="ValueSet.compose.include.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.extension">
 <path value="ValueSet.compose.include.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.modifierExtension">
 <path value="ValueSet.compose.include.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.include.system">
 <path value="ValueSet.compose.include.system" />
 <short value="The system the codes come from" />
 <definition value="An absolute URI which is the code system from which the selected codes come from." />
 <comment value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.system" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <condition value="vsd-1" />
 <condition value="vsd-2" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.version">
 <path value="ValueSet.compose.include.version" />
 <short value="Specific version of the code system referred to" />
 <definition value="The version of the code system that the codes are selected from, or the special version '*' for all versions." />
 <comment value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.version" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept">
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">
 <valueString value="ConceptReference" />
 </extension>
 <path value="ValueSet.compose.include.concept" />
 <short value="A concept defined in the system" />
 <definition value="Specifies a concept to be included or excluded." />
 <comment value="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." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.include.concept" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <condition value="vsd-3" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.id">
 <path value="ValueSet.compose.include.concept.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.extension">
 <path value="ValueSet.compose.include.concept.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.modifierExtension">
 <path value="ValueSet.compose.include.concept.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.include.concept.code">
 <path value="ValueSet.compose.include.concept.code" />
 <short value="Code or expression from system" />
 <definition value="Specifies a code for the concept to be included or excluded." />
 <comment value="Expressions are allowed if defined by the underlying code system." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.concept.code" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.display">
 <path value="ValueSet.compose.include.concept.display" />
 <short value="Text to display for this code for this value set in this valueset" />
 <definition value="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." />
 <comment value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.concept.display" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.designation">
 <path value="ValueSet.compose.include.concept.designation" />
 <short value="Additional representations for this concept" />
 <definition value="Additional representations for this concept when used in this value set - other languages, aliases, specialized purposes, used for particular purposes, etc." />
 <comment value="Concepts have both a ```display``` and an array of ```designation```. The display is equivalent to a special designation with an implied ```designation.use``` of &quot;primary code&quot; and a language equal to the [Resource Language](http://hl7.org/fhir/R4/resource.html#language)." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.include.concept.designation" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.compose.include.concept.designation.id">
 <path value="ValueSet.compose.include.concept.designation.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.designation.extension">
 <path value="ValueSet.compose.include.concept.designation.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.concept.designation.modifierExtension">
 <path value="ValueSet.compose.include.concept.designation.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.include.concept.designation.language">
 <path value="ValueSet.compose.include.concept.designation.language" />
 <short value="Human language of the designation" />
 <definition value="The language this designation is defined for." />
 <comment value="In the absence of a language, the resource language applies." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.concept.designation.language" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet">
 <valueCanonical value="http://hl7.org/fhir/ValueSet/all-languages" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="Language" />
 </extension>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
 <valueBoolean value="true" />
 </extension>
 <strength value="preferred" />
 <description value="A human language." />
 <valueSet value="http://hl7.org/fhir/ValueSet/languages" />
 </binding>
 </element>
 <element id="ValueSet.compose.include.concept.designation.use">
 <path value="ValueSet.compose.include.concept.designation.use" />
 <short value="Types of uses of designations" />
 <definition value="A code that represents types of uses of designations." />
 <comment value="If no use is provided, the designation can be assumed to be suitable for general display to a human user." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.concept.designation.use" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="Coding" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="ConceptDesignationUse" />
 </extension>
 <strength value="extensible" />
 <description value="Details of how a designation would be used." />
 <valueSet value="http://hl7.org/fhir/ValueSet/designation-use" />
 </binding>
 </element>
 <element id="ValueSet.compose.include.concept.designation.value">
 <path value="ValueSet.compose.include.concept.designation.value" />
 <short value="The text value for this designation" />
 <definition value="The text value for this designation." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.concept.designation.value" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.compose.include.filter">
 <path value="ValueSet.compose.include.filter" />
 <short value="Select codes/concepts by their properties (including relationships)" />
 <definition value="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." />
 <comment value="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." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.include.filter" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <condition value="vsd-3" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.filter.id">
 <path value="ValueSet.compose.include.filter.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.filter.extension">
 <path value="ValueSet.compose.include.filter.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.filter.modifierExtension">
 <path value="ValueSet.compose.include.filter.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.compose.include.filter.property">
 <path value="ValueSet.compose.include.filter.property" />
 <short value="A property/filter defined by the code system" />
 <definition value="A code that identifies a property or a filter defined in the code system." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.filter.property" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.filter.op">
 <path value="ValueSet.compose.include.filter.op" />
 <short value="= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | exists" />
 <definition value="The kind of operation to perform as a part of the filter criteria." />
 <comment value="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." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.filter.op" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <binding>
 <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
 <valueString value="FilterOperator" />
 </extension>
 <strength value="required" />
 <description value="The kind of operation to perform as a part of a property based filter." />
 <valueSet value="http://hl7.org/fhir/ValueSet/filter-operator|4.0.1" />
 </binding>
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.filter.value">
 <path value="ValueSet.compose.include.filter.value" />
 <short value="Code from the system, or regex criteria, or boolean value for exists" />
 <definition value="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'." />
 <comment value="Use regex matching with care - full regex matching on every SNOMED CT term is prohibitive, for example." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.compose.include.filter.value" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.include.valueSet">
 <path value="ValueSet.compose.include.valueSet" />
 <short value="Select the contents included in this value set" />
 <definition value="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." />
 <comment value="The value set URI is either a logical reference to a defined value set such as a [SNOMED CT reference set](http://hl7.org/fhir/R4/snomedct.html#implicit), 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." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.include.valueSet" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="canonical" />
 <targetProfile value="http://hl7.org/fhir/StructureDefinition/ValueSet" />
 </type>
 <condition value="vsd-1" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="true" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.compose.exclude">
 <path value="ValueSet.compose.exclude" />
 <short value="Explicitly exclude codes from a code system or other value sets" />
 <definition value="Exclude one or more codes from the value set based on code system filters and/or other value sets." />
 <comment value="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." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.compose.exclude" />
 <min value="0" />
 <max value="*" />
 </base>
 <contentReference value="#ValueSet.compose.include" />
 <condition value="vsd-2" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="N/A" />
 </mapping>
 </element>
 <element id="ValueSet.expansion">
 <path value="ValueSet.expansion" />
 <short value="Used when the value set is &quot;expanded&quot;" />
 <definition value="A value set can also be &quot;expanded&quot;, where the value set is turned into a simple collection of enumerated codes. This element holds the expansion, if it has been performed." />
 <comment value="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.&#xA;&#xA;Expansion.parameter is a simplified list of parameters - a subset of the features of the [Parameters](http://hl7.org/fhir/R4/parameters.html) resource." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="ValueSet.expansion" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.id">
 <path value="ValueSet.expansion.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.extension">
 <path value="ValueSet.expansion.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.modifierExtension">
 <path value="ValueSet.expansion.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.expansion.identifier">
 <path value="ValueSet.expansion.identifier" />
 <short value="Identifies the value set expansion (business identifier)" />
 <definition value="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." />
 <comment value="Typically, this uri is a UUID (e.g. urn:uuid:8230ff20-c97a-4167-a59d-dc2cb9df16dd)." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.identifier" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.timestamp">
 <path value="ValueSet.expansion.timestamp" />
 <short value="Time ValueSet expansion happened" />
 <definition value="The time at which the expansion was produced by the expanding system." />
 <comment value="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." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.timestamp" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="dateTime" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.total">
 <path value="ValueSet.expansion.total" />
 <short value="Total number of codes in the expansion" />
 <definition value="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." />
 <comment value="Paging only applies to flat expansions." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.total" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="integer" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.offset">
 <path value="ValueSet.expansion.offset" />
 <short value="Offset at which this resource starts" />
 <definition value="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." />
 <comment value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.offset" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="integer" />
 </type>
 <meaningWhenMissing value="Paging is not being used" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.parameter">
 <path value="ValueSet.expansion.parameter" />
 <short value="Parameter that controlled the expansion process" />
 <definition value="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." />
 <comment value="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)." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.expansion.parameter" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.parameter.id">
 <path value="ValueSet.expansion.parameter.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.parameter.extension">
 <path value="ValueSet.expansion.parameter.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.parameter.modifierExtension">
 <path value="ValueSet.expansion.parameter.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.expansion.parameter.name">
 <path value="ValueSet.expansion.parameter.name" />
 <short value="Name as assigned by the client or server" />
 <definition value="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." />
 <comment value="The names are assigned at the discretion of the server." />
 <min value="1" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.parameter.name" />
 <min value="1" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.parameter.value[x]">
 <path value="ValueSet.expansion.parameter.value[x]" />
 <short value="Value of the named parameter" />
 <definition value="The value of the parameter." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.parameter.value[x]" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <type>
 <code value="boolean" />
 </type>
 <type>
 <code value="integer" />
 </type>
 <type>
 <code value="decimal" />
 </type>
 <type>
 <code value="uri" />
 </type>
 <type>
 <code value="code" />
 </type>
 <type>
 <code value="dateTime" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains">
 <path value="ValueSet.expansion.contains" />
 <short value="Codes in the value set" />
 <definition value="The codes that are contained in the value set expansion." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.expansion.contains" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="BackboneElement" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="vsd-6" />
 <severity value="error" />
 <human value="SHALL have a code or a display" />
 <expression value="code.exists() or display.exists()" />
 <xpath value="exists(f:code) or exists(f:display)" />
 </constraint>
 <constraint>
 <key value="vsd-9" />
 <severity value="error" />
 <human value="Must have a code if not abstract" />
 <expression value="code.exists() or abstract = true" />
 <xpath value="exists(f:code) or (f:abstract/@value = true())" />
 </constraint>
 <constraint>
 <key value="vsd-10" />
 <severity value="error" />
 <human value="Must have a system if a code is present" />
 <expression value="code.empty() or system.exists()" />
 <xpath value="exists(f:system) or not(exists(f:code))" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.id">
 <path value="ValueSet.expansion.contains.id" />
 <representation value="xmlAttr" />
 <short value="Unique id for inter-element referencing" />
 <definition value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="Element.id" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
 <valueUrl value="string" />
 </extension>
 <code value="string" />
 </type>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.contains.extension">
 <path value="ValueSet.expansion.contains.extension" />
 <short value="Additional content defined by implementations" />
 <definition value="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." />
 <comment value="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." />
 <alias value="extensions" />
 <alias value="user content" />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="Element.extension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 <mapping>
 <identity value="rim" />
 <map value="n/a" />
 </mapping>
 </element>
 <element id="ValueSet.expansion.contains.modifierExtension">
 <path value="ValueSet.expansion.contains.modifierExtension" />
 <short value="Extension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <min value="0" />
 <max value="0" />
 <base>
 <path value="BackboneElement.modifierExtension" />
 <min value="0" />
 <max value="*" />
 </base>
 <type>
 <code value="Extension" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <constraint>
 <key value="ext-1" />
 <severity value="error" />
 <human value="Must have either extensions or value[x], not both" />
 <expression value="extension.exists() != value.exists()" />
 <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &quot;value&quot;)])" />
 <source value="http://hl7.org/fhir/StructureDefinition/Extension" />
 </constraint>
 <isModifier value="true" />
 <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them" />
 <isSummary value="true" />
 </element>
 <element id="ValueSet.expansion.contains.system">
 <path value="ValueSet.expansion.contains.system" />
 <short value="System value for the code" />
 <definition value="An absolute URI which is the code system in which the code for this item in the expansion is defined." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.system" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="uri" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.abstract">
 <path value="ValueSet.expansion.contains.abstract" />
 <short value="If user cannot select this entry" />
 <definition value="If true, this entry is included in the expansion for navigational purposes, and the user cannot select the code directly as a proper value." />
 <comment value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.abstract" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="boolean" />
 </type>
 <meaningWhenMissing value="If this is not populated, systems can assume that the concept it not abstract. This SHALL always be populated for abstract concepts" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.inactive">
 <path value="ValueSet.expansion.contains.inactive" />
 <short value="If concept is inactive in the code system" />
 <definition value="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)." />
 <comment value="This should only have a value if the concept is inactive." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.inactive" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="boolean" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.version">
 <path value="ValueSet.expansion.contains.version" />
 <short value="Version in which this code/display is defined" />
 <definition value="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." />
 <comment value="The exact value of the version string is specified by the system from which the code is derived." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.version" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.code">
 <path value="ValueSet.expansion.contains.code" />
 <short value="Code - if blank, this is not a selectable code" />
 <definition value="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." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.code" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="code" />
 </type>
 <condition value="vsd-6" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.display">
 <path value="ValueSet.expansion.contains.display" />
 <short value="User display for the concept" />
 <definition value="The recommended display for this item in the expansion." />
 <min value="0" />
 <max value="1" />
 <base>
 <path value="ValueSet.expansion.contains.display" />
 <min value="0" />
 <max value="1" />
 </base>
 <type>
 <code value="string" />
 </type>
 <condition value="vsd-6" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.designation">
 <path value="ValueSet.expansion.contains.designation" />
 <short value="Additional representations for this item" />
 <definition value="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." />
 <comment value="The designations provided must be based on the value set and code system definitions." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.expansion.contains.designation" />
 <min value="0" />
 <max value="*" />
 </base>
 <contentReference value="#ValueSet.compose.include.concept.designation" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 <element id="ValueSet.expansion.contains.contains">
 <path value="ValueSet.expansion.contains.contains" />
 <short value="Codes contained under this entry" />
 <definition value="Other codes and entries contained under this entry in the hierarchy." />
 <comment value="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." />
 <min value="0" />
 <max value="*" />
 <base>
 <path value="ValueSet.expansion.contains.contains" />
 <min value="0" />
 <max value="*" />
 </base>
 <contentReference value="#ValueSet.expansion.contains" />
 <constraint>
 <key value="ele-1" />
 <severity value="error" />
 <human value="All FHIR elements must have a @value or children" />
 <expression value="hasValue() or (children().count() &gt; id.count())" />
 <xpath value="@value|f:*|h:div" />
 <source value="http://hl7.org/fhir/StructureDefinition/Element" />
 </constraint>
 <isModifier value="false" />
 <isSummary value="false" />
 </element>
 </snapshot>
 <differential>
 <element id="ValueSet">
 <path value="ValueSet" />
 </element>
 <element id="ValueSet.implicitRules">
 <path value="ValueSet.implicitRules" />
 <definition value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content." />
 <max value="0" />
 </element>
 <element id="ValueSet.text">
 <path value="ValueSet.text" />
 <definition value="A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it &quot;clinically safe&quot; for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety." />
 <min value="1" />
 </element>
 <element id="ValueSet.contained">
 <path value="ValueSet.contained" />
 <definition value="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." />
 <max value="0" />
 </element>
 <element id="ValueSet.modifierExtension">
 <path value="ValueSet.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.url">
 <path value="ValueSet.url" />
 <definition value="An absolute URI that is used to identify this value set when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this value set is (or will be) published. The URL SHOULD include the major version of the value set. For more information see [Technical and Business Versions](resource.html#versions)." />
 <min value="1" />
 </element>
 <element id="ValueSet.identifier">
 <path value="ValueSet.identifier" />
 <definition value="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." />
 <min value="1" />
 </element>
 <element id="ValueSet.identifier.system">
 <path value="ValueSet.identifier.system" />
 <definition value="Establishes the namespace for the value - that is, a URL that describes a set values that are unique." />
 <min value="1" />
 <fixedUri value="urn:ietf:rfc:3986" />
 </element>
 <element id="ValueSet.identifier.value">
 <path value="ValueSet.identifier.value" />
 <definition value="The portion of the identifier typically relevant to the user and which is unique within the context of the system." />
 <min value="1" />
 </element>
 <element id="ValueSet.version">
 <path value="ValueSet.version" />
 <definition value="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." />
 <min value="1" />
 </element>
 <element id="ValueSet.name">
 <path value="ValueSet.name" />
 <definition value="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." />
 <min value="1" />
 </element>
 <element id="ValueSet.title">
 <path value="ValueSet.title" />
 <definition value="A short, descriptive, user-friendly title for the value set." />
 <min value="1" />
 </element>
 <element id="ValueSet.experimental">
 <path value="ValueSet.experimental" />
 <definition value="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." />
 <min value="1" />
 </element>
 <element id="ValueSet.date">
 <path value="ValueSet.date" />
 <definition value="The date (and optionally time) when the value set was published. The date must change if and when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the value set changes. (e.g. the 'content logical definition')." />
 <min value="1" />
 </element>
 <element id="ValueSet.publisher">
 <path value="ValueSet.publisher" />
 <definition value="The name of the individual or organization that published the value set." />
 <min value="1" />
 </element>
 <element id="ValueSet.contact.name">
 <path value="ValueSet.contact.name" />
 <definition value="The name of an individual to contact." />
 <min value="0" />
 <max value="1" />
 </element>
 <element id="ValueSet.contact.telecom">
 <path value="ValueSet.contact.telecom" />
 <definition value="The contact details for the individual (if a name was provided) or the organization." />
 <min value="1" />
 </element>
 <element id="ValueSet.description">
 <path value="ValueSet.description" />
 <definition value="A free text natural language description of the value set from a consumer's perspective." />
 <min value="1" />
 </element>
 <element id="ValueSet.immutable">
 <path value="ValueSet.immutable" />
 <definition value="If this is set to 'true', then no new versions of the content logical definition can be created. Note: Other metadata might still change." />
 <max value="0" />
 </element>
 <element id="ValueSet.purpose">
 <path value="ValueSet.purpose" />
 <definition value="Explaination of why this value set is needed and why it has been designed as it has." />
 <max value="0" />
 </element>
 <element id="ValueSet.copyright">
 <path value="ValueSet.copyright" />
 <definition value="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." />
 <min value="1" />
 </element>
 <element id="ValueSet.compose">
 <path value="ValueSet.compose" />
 <definition value="A set of criteria that define the content logical definition of the value set by including or excluding codes from outside this value set. This I also known as the &quot;Content Logical Definition&quot; (CLD)." />
 <min value="1" />
 </element>
 <element id="ValueSet.compose.modifierExtension">
 <path value="ValueSet.compose.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.compose.lockedDate">
 <path value="ValueSet.compose.lockedDate" />
 <definition value="If a locked date is defined, then the Content Logical Definition must be evaluated using the current version as of the locked date for referenced code system(s) and value set instances where ValueSet.compose.include.version is not defined." />
 <max value="0" />
 </element>
 <element id="ValueSet.compose.include.modifierExtension">
 <path value="ValueSet.compose.include.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.compose.include.concept.modifierExtension">
 <path value="ValueSet.compose.include.concept.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.compose.include.concept.designation.modifierExtension">
 <path value="ValueSet.compose.include.concept.designation.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.compose.include.filter.modifierExtension">
 <path value="ValueSet.compose.include.filter.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.expansion">
 <path value="ValueSet.expansion" />
 <definition value="A value set can also be &quot;expanded&quot;, where the value set is turned into a simple collection of enumerated codes. This element holds the expansion, if it has been performed." />
 <max value="0" />
 </element>
 <element id="ValueSet.expansion.modifierExtension">
 <path value="ValueSet.expansion.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.expansion.parameter.modifierExtension">
 <path value="ValueSet.expansion.parameter.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 <element id="ValueSet.expansion.contains.modifierExtension">
 <path value="ValueSet.expansion.contains.modifierExtension" />
 <definition value="May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions." />
 <max value="0" />
 </element>
 </differential>
</StructureDefinition>

name : Ncts_composed_value_set

{

}