Release 4B Snapshot #1

This page is part of the FHIR Specification v4.3.0-snapshot1: R4B Snapshot to support the Jan 2022 Connectathon. About the R4B version of FHIR. The current officially released version is 4.3.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

5.5 Resource SearchParameter - Content

FHIR Infrastructure Work GroupMaturity Level: 3 Trial UseSecurity Category: Anonymous Compartments: Not linked to any defined compartments

A search parameter that defines a named search item that can be used to search/filter on a resource.

5.5.1 Scope and Usage

A SearchParameter resource specifies a search parameter that may be used on the RESTful API to search or filter on a resource. The SearchParameter resource declares:

  • how to refer to the search parameter from a client
  • how the search parameter is to be understood by the server
  • where in the source resource the parameter matches

5.5.2 Boundaries and Relationships

5.5.3 Background and Context

Implementers should be familiar with the background and concepts described in Search on the RESTful API before working with this resource.

There is a registry of all Search Parameters.

5.5.4 References

This resource is referenced by CapabilityStatement and itself.

This resource does not implement any patterns.

5.5.5 Resource Content

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. SearchParameter TUDomainResourceSearch parameter for a resource
+ Warning: Name should be usable as an identifier for the module by machine processing applications such as code generation
+ Rule: If an xpath is present, there SHALL be an xpathUsage
+ Rule: Search parameters can only have chain names when the search parameter type is 'reference'
Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... url Σ1..1uriCanonical identifier for this search parameter, represented as a URI (globally unique)
... version Σ0..1stringBusiness version of the search parameter
... name Σ1..1stringName for this search parameter (computer friendly)
... status ?!Σ1..1codedraft | active | retired | unknown
PublicationStatus (Required)
... experimental Σ0..1booleanFor testing purposes, not real usage
... date Σ0..1dateTimeDate last changed
... publisher Σ0..1stringName of the publisher (organization or individual)
... contact Σ0..*ContactDetailContact details for the publisher
... description Σ1..1markdownNatural language description of the search parameter
... useContext Σ0..*UsageContextThe context that the content is intended to support
... jurisdiction Σ0..*CodeableConceptIntended jurisdiction for search parameter (if applicable)
Jurisdiction (Extensible)
... purpose 0..1markdownWhy this search parameter is defined
... code Σ1..1codeCode used in URL
... base Σ1..*codeThe resource type(s) this search parameter applies to
ResourceType (Required)
... type Σ1..1codenumber | date | string | token | reference | composite | quantity | uri | special
SearchParamType (Required)
... expression I0..1stringFHIRPath expression that extracts the values
... xpath I0..1stringXPath that extracts the values
... xpathUsage I0..1codenormal | phonetic | nearby | distance | other
XPathUsageType (Required)
... target 0..*codeTypes of resource (if a resource reference)
ResourceType (Required)
... multipleOr 0..1booleanAllow multiple values per parameter (or)
... multipleAnd 0..1booleanAllow multiple parameters (and)
... comparator 0..*codeeq | ne | gt | lt | ge | le | sa | eb | ap
SearchComparator (Required)
... modifier 0..*codemissing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
SearchModifierCode (Required)
... chain 0..*stringChained names supported
... component 0..*BackboneElementFor Composite resources to define the parts
.... definition 1..1canonical(SearchParameter)Defines how the part works
.... expression 1..1stringSubexpression relative to main expression

doco Documentation for this format

UML Diagram (Legend)

SearchParameter (DomainResource)An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this search parameter is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the search parameter is stored on different serversurl : uri [1..1]The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter 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 sequenceversion : string [0..1]A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generationname : string [1..1]Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. i.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameterderivedFrom : canonical [0..1] « SearchParameter »The status of this search parameter. Enables tracking the life-cycle of the content (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)PublicationStatus! »A Boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usageexperimental : boolean [0..1]The date (and optionally time) when the search parameter was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changesdate : dateTime [0..1]The name of the organization or individual that published the search parameterpublisher : string [0..1]Contact details to assist a user in finding and communicating with the publishercontact : ContactDetail [0..*]And how it useddescription : markdown [1..1]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 search parameter instancesuseContext : UsageContext [0..*]A legal or geographic region in which the search parameter is intended to be usedjurisdiction : CodeableConcept [0..*] « null (Strength=Extensible)Jurisdiction ValueSet+ »Explanation of why this search parameter is needed and why it has been designed as it haspurpose : markdown [0..1]The code used in the URL or the parameter name in a parameters resource for this search parametercode : code [1..1]The base resource type(s) that this search parameter can be used againstbase : code [1..*] « null (Strength=Required)ResourceType! »The type of value that a search parameter may contain, and how the content is interpretedtype : code [1..1] « null (Strength=Required)SearchParamType! »A FHIRPath expression that returns a set of elements for the search parameterexpression : string [0..1]An XPath expression that returns a set of elements for the search parameterxpath : string [0..1]How the search parameter relates to the set of elements returned by evaluating the xpath queryxpathUsage : code [0..1] « null (Strength=Required)XPathUsageType! »Types of resource (if a resource is referenced)target : code [0..*] « null (Strength=Required)ResourceType! »Whether multiple values are allowed for each time the parameter exists. Values are separated by commas, and the parameter matches if any of the values matchmultipleOr : boolean [0..1]Whether multiple parameters are allowed - e.g. more than one parameter with the same name. The search matches if all the parameters matchmultipleAnd : boolean [0..1]Comparators supported for the search parametercomparator : code [0..*] « null (Strength=Required)SearchComparator! »A modifier supported for the search parametermodifier : code [0..*] « null (Strength=Required)SearchModifierCode! »Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource typechain : string [0..*]ComponentThe definition of the search parameter that describes this partdefinition : canonical [1..1] « SearchParameter »A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expressionexpression : string [1..1]Used to define the parts of a composite search parametercomponent[0..*]

XML Template

<SearchParameter xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <url value="[uri]"/><!-- 1..1 Canonical identifier for this search parameter, represented as a URI (globally unique) -->
 <version value="[string]"/><!-- 0..1 Business version of the search parameter -->
 <name value="[string]"/><!-- 1..1 Name for this search parameter (computer friendly) -->
 <derivedFrom><!-- 0..1 canonical(SearchParameter) Original definition for the search parameter --></derivedFrom>
 <status value="[code]"/><!-- 1..1 draft | active | retired | unknown -->
 <experimental value="[boolean]"/><!-- 0..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- 0..1 Date last changed -->
 <publisher value="[string]"/><!-- 0..1 Name of the publisher (organization or individual) -->
 <contact><!-- 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- 1..1 Natural language description of the search parameter -->
 <useContext><!-- 0..* UsageContext The context that the content is intended to support --></useContext>
 <jurisdiction><!-- 0..* CodeableConcept Intended jurisdiction for search parameter (if applicable) --></jurisdiction>
 <purpose value="[markdown]"/><!-- 0..1 Why this search parameter is defined -->
 <code value="[code]"/><!-- 1..1 Code used in URL -->
 <base value="[code]"/><!-- 1..* The resource type(s) this search parameter applies to -->
 <type value="[code]"/><!-- 1..1 number | date | string | token | reference | composite | quantity | uri | special -->
 <expression value="[string]"/><!-- ?? 0..1 FHIRPath expression that extracts the values -->
 <xpath value="[string]"/><!-- ?? 0..1 XPath that extracts the values -->
 <xpathUsage value="[code]"/><!-- ?? 0..1 normal | phonetic | nearby | distance | other -->
 <target value="[code]"/><!-- 0..* Types of resource (if a resource reference) -->
 <multipleOr value="[boolean]"/><!-- 0..1 Allow multiple values per parameter (or) -->
 <multipleAnd value="[boolean]"/><!-- 0..1 Allow multiple parameters (and) -->
 <comparator value="[code]"/><!-- 0..* eq | ne | gt | lt | ge | le | sa | eb | ap -->
 <modifier value="[code]"/><!-- 0..* missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType -->
 <chain value="[string]"/><!-- 0..* Chained names supported -->
 <component>  <!-- 0..* For Composite resources to define the parts -->
  <definition><!-- 1..1 canonical(SearchParameter) Defines how the part works --></definition>
  <expression value="[string]"/><!-- 1..1 Subexpression relative to main expression -->
 </component>
</SearchParameter>

JSON Template

{doco
  "resourceType" : "SearchParameter",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "url" : "<uri>", // R!  Canonical identifier for this search parameter, represented as a URI (globally unique)
  "version" : "<string>", // Business version of the search parameter
  "name" : "<string>", // R!  Name for this search parameter (computer friendly)
  "derivedFrom" : { canonical(SearchParameter) }, // Original definition for the search parameter
  "status" : "<code>", // R!  draft | active | retired | unknown
  "experimental" : <boolean>, // For testing purposes, not real usage
  "date" : "<dateTime>", // Date last changed
  "publisher" : "<string>", // Name of the publisher (organization or individual)
  "contact" : [{ ContactDetail }], // Contact details for the publisher
  "description" : "<markdown>", // R!  Natural language description of the search parameter
  "useContext" : [{ UsageContext }], // The context that the content is intended to support
  "jurisdiction" : [{ CodeableConcept }], // Intended jurisdiction for search parameter (if applicable)
  "purpose" : "<markdown>", // Why this search parameter is defined
  "code" : "<code>", // R!  Code used in URL
  "base" : ["<code>"], // R!  The resource type(s) this search parameter applies to
  "type" : "<code>", // R!  number | date | string | token | reference | composite | quantity | uri | special
  "expression" : "<string>", // C? FHIRPath expression that extracts the values
  "xpath" : "<string>", // C? XPath that extracts the values
  "xpathUsage" : "<code>", // C? normal | phonetic | nearby | distance | other
  "target" : ["<code>"], // Types of resource (if a resource reference)
  "multipleOr" : <boolean>, // Allow multiple values per parameter (or)
  "multipleAnd" : <boolean>, // Allow multiple parameters (and)
  "comparator" : ["<code>"], // eq | ne | gt | lt | ge | le | sa | eb | ap
  "modifier" : ["<code>"], // missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
  "chain" : ["<string>"], // Chained names supported
  "component" : [{ // For Composite resources to define the parts
    "definition" : { canonical(SearchParameter) }, // R!  Defines how the part works
    "expression" : "<string>" // R!  Subexpression relative to main expression
  }]
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:SearchParameter;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:SearchParameter.url [ uri ]; # 1..1 Canonical identifier for this search parameter, represented as a URI (globally unique)
  fhir:SearchParameter.version [ string ]; # 0..1 Business version of the search parameter
  fhir:SearchParameter.name [ string ]; # 1..1 Name for this search parameter (computer friendly)
  fhir:SearchParameter.derivedFrom [ canonical(SearchParameter) ]; # 0..1 Original definition for the search parameter
  fhir:SearchParameter.status [ code ]; # 1..1 draft | active | retired | unknown
  fhir:SearchParameter.experimental [ boolean ]; # 0..1 For testing purposes, not real usage
  fhir:SearchParameter.date [ dateTime ]; # 0..1 Date last changed
  fhir:SearchParameter.publisher [ string ]; # 0..1 Name of the publisher (organization or individual)
  fhir:SearchParameter.contact [ ContactDetail ], ... ; # 0..* Contact details for the publisher
  fhir:SearchParameter.description [ markdown ]; # 1..1 Natural language description of the search parameter
  fhir:SearchParameter.useContext [ UsageContext ], ... ; # 0..* The context that the content is intended to support
  fhir:SearchParameter.jurisdiction [ CodeableConcept ], ... ; # 0..* Intended jurisdiction for search parameter (if applicable)
  fhir:SearchParameter.purpose [ markdown ]; # 0..1 Why this search parameter is defined
  fhir:SearchParameter.code [ code ]; # 1..1 Code used in URL
  fhir:SearchParameter.base [ code ], ... ; # 1..* The resource type(s) this search parameter applies to
  fhir:SearchParameter.type [ code ]; # 1..1 number | date | string | token | reference | composite | quantity | uri | special
  fhir:SearchParameter.expression [ string ]; # 0..1 FHIRPath expression that extracts the values
  fhir:SearchParameter.xpath [ string ]; # 0..1 XPath that extracts the values
  fhir:SearchParameter.xpathUsage [ code ]; # 0..1 normal | phonetic | nearby | distance | other
  fhir:SearchParameter.target [ code ], ... ; # 0..* Types of resource (if a resource reference)
  fhir:SearchParameter.multipleOr [ boolean ]; # 0..1 Allow multiple values per parameter (or)
  fhir:SearchParameter.multipleAnd [ boolean ]; # 0..1 Allow multiple parameters (and)
  fhir:SearchParameter.comparator [ code ], ... ; # 0..* eq | ne | gt | lt | ge | le | sa | eb | ap
  fhir:SearchParameter.modifier [ code ], ... ; # 0..* missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
  fhir:SearchParameter.chain [ string ], ... ; # 0..* Chained names supported
  fhir:SearchParameter.component [ # 0..* For Composite resources to define the parts
    fhir:SearchParameter.component.definition [ canonical(SearchParameter) ]; # 1..1 Defines how the part works
    fhir:SearchParameter.component.expression [ string ]; # 1..1 Subexpression relative to main expression
  ], ...;
]

Changes since R3

SearchParameter
SearchParameter.status
  • Change value set from http://hl7.org/fhir/ValueSet/publication-status|4.0.0 to http://hl7.org/fhir/ValueSet/publication-status|4.3.0-snapshot1
SearchParameter.base
  • Change value set from http://hl7.org/fhir/ValueSet/resource-types|4.0.0 to http://hl7.org/fhir/ValueSet/resource-types|4.3.0-snapshot1
SearchParameter.type
  • Change value set from http://hl7.org/fhir/ValueSet/search-param-type|4.0.0 to http://hl7.org/fhir/ValueSet/search-param-type|4.3.0-snapshot1
SearchParameter.xpathUsage
  • Change value set from http://hl7.org/fhir/ValueSet/search-xpath-usage|4.0.0 to http://hl7.org/fhir/ValueSet/search-xpath-usage|4.3.0-snapshot1
SearchParameter.target
  • Change value set from http://hl7.org/fhir/ValueSet/resource-types|4.0.0 to http://hl7.org/fhir/ValueSet/resource-types|4.3.0-snapshot1
SearchParameter.comparator
  • Change value set from http://hl7.org/fhir/ValueSet/search-comparator|4.0.0 to http://hl7.org/fhir/ValueSet/search-comparator|4.3.0-snapshot1
SearchParameter.modifier
  • Change value set from http://hl7.org/fhir/ValueSet/search-modifier-code|4.0.0 to http://hl7.org/fhir/ValueSet/search-modifier-code|4.3.0-snapshot1

See the Full Difference for further information

This analysis is available as XML or JSON.

See R3 <--> R4 Conversion Maps (status = 3 tests that all execute ok. All tests pass round-trip testing and 3 r3 resources are invalid (0 errors).)

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. SearchParameter TUDomainResourceSearch parameter for a resource
+ Warning: Name should be usable as an identifier for the module by machine processing applications such as code generation
+ Rule: If an xpath is present, there SHALL be an xpathUsage
+ Rule: Search parameters can only have chain names when the search parameter type is 'reference'
Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... url Σ1..1uriCanonical identifier for this search parameter, represented as a URI (globally unique)
... version Σ0..1stringBusiness version of the search parameter
... name Σ1..1stringName for this search parameter (computer friendly)
... status ?!Σ1..1codedraft | active | retired | unknown
PublicationStatus (Required)
... experimental Σ0..1booleanFor testing purposes, not real usage
... date Σ0..1dateTimeDate last changed
... publisher Σ0..1stringName of the publisher (organization or individual)
... contact Σ0..*ContactDetailContact details for the publisher
... description Σ1..1markdownNatural language description of the search parameter
... useContext Σ0..*UsageContextThe context that the content is intended to support
... jurisdiction Σ0..*CodeableConceptIntended jurisdiction for search parameter (if applicable)
Jurisdiction (Extensible)
... purpose 0..1markdownWhy this search parameter is defined
... code Σ1..1codeCode used in URL
... base Σ1..*codeThe resource type(s) this search parameter applies to
ResourceType (Required)
... type Σ1..1codenumber | date | string | token | reference | composite | quantity | uri | special
SearchParamType (Required)
... expression I0..1stringFHIRPath expression that extracts the values
... xpath I0..1stringXPath that extracts the values
... xpathUsage I0..1codenormal | phonetic | nearby | distance | other
XPathUsageType (Required)
... target 0..*codeTypes of resource (if a resource reference)
ResourceType (Required)
... multipleOr 0..1booleanAllow multiple values per parameter (or)
... multipleAnd 0..1booleanAllow multiple parameters (and)
... comparator 0..*codeeq | ne | gt | lt | ge | le | sa | eb | ap
SearchComparator (Required)
... modifier 0..*codemissing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
SearchModifierCode (Required)
... chain 0..*stringChained names supported
... component 0..*BackboneElementFor Composite resources to define the parts
.... definition 1..1canonical(SearchParameter)Defines how the part works
.... expression 1..1stringSubexpression relative to main expression

doco Documentation for this format

UML Diagram (Legend)

SearchParameter (DomainResource)An absolute URI that is used to identify this search parameter when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this search parameter is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the search parameter is stored on different serversurl : uri [1..1]The identifier that is used to identify this version of the search parameter when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the search parameter 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 sequenceversion : string [0..1]A natural language name identifying the search parameter. This name should be usable as an identifier for the module by machine processing applications such as code generationname : string [1..1]Where this search parameter is originally defined. If a derivedFrom is provided, then the details in the search parameter must be consistent with the definition from which it is defined. i.e. the parameter should have the same meaning, and (usually) the functionality should be a proper subset of the underlying search parameterderivedFrom : canonical [0..1] « SearchParameter »The status of this search parameter. Enables tracking the life-cycle of the content (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)PublicationStatus! »A Boolean value to indicate that this search parameter is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usageexperimental : boolean [0..1]The date (and optionally time) when the search parameter was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the search parameter changesdate : dateTime [0..1]The name of the organization or individual that published the search parameterpublisher : string [0..1]Contact details to assist a user in finding and communicating with the publishercontact : ContactDetail [0..*]And how it useddescription : markdown [1..1]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 search parameter instancesuseContext : UsageContext [0..*]A legal or geographic region in which the search parameter is intended to be usedjurisdiction : CodeableConcept [0..*] « null (Strength=Extensible)Jurisdiction ValueSet+ »Explanation of why this search parameter is needed and why it has been designed as it haspurpose : markdown [0..1]The code used in the URL or the parameter name in a parameters resource for this search parametercode : code [1..1]The base resource type(s) that this search parameter can be used againstbase : code [1..*] « null (Strength=Required)ResourceType! »The type of value that a search parameter may contain, and how the content is interpretedtype : code [1..1] « null (Strength=Required)SearchParamType! »A FHIRPath expression that returns a set of elements for the search parameterexpression : string [0..1]An XPath expression that returns a set of elements for the search parameterxpath : string [0..1]How the search parameter relates to the set of elements returned by evaluating the xpath queryxpathUsage : code [0..1] « null (Strength=Required)XPathUsageType! »Types of resource (if a resource is referenced)target : code [0..*] « null (Strength=Required)ResourceType! »Whether multiple values are allowed for each time the parameter exists. Values are separated by commas, and the parameter matches if any of the values matchmultipleOr : boolean [0..1]Whether multiple parameters are allowed - e.g. more than one parameter with the same name. The search matches if all the parameters matchmultipleAnd : boolean [0..1]Comparators supported for the search parametercomparator : code [0..*] « null (Strength=Required)SearchComparator! »A modifier supported for the search parametermodifier : code [0..*] « null (Strength=Required)SearchModifierCode! »Contains the names of any search parameters which may be chained to the containing search parameter. Chained parameters may be added to search parameters of type reference and specify that resources will only be returned if they contain a reference to a resource which matches the chained parameter value. Values for this field should be drawn from SearchParameter.code for a parameter on the target resource typechain : string [0..*]ComponentThe definition of the search parameter that describes this partdefinition : canonical [1..1] « SearchParameter »A sub-expression that defines how to extract values for this component from the output of the main SearchParameter.expressionexpression : string [1..1]Used to define the parts of a composite search parametercomponent[0..*]

XML Template

<SearchParameter xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <url value="[uri]"/><!-- 1..1 Canonical identifier for this search parameter, represented as a URI (globally unique) -->
 <version value="[string]"/><!-- 0..1 Business version of the search parameter -->
 <name value="[string]"/><!-- 1..1 Name for this search parameter (computer friendly) -->
 <derivedFrom><!-- 0..1 canonical(SearchParameter) Original definition for the search parameter --></derivedFrom>
 <status value="[code]"/><!-- 1..1 draft | active | retired | unknown -->
 <experimental value="[boolean]"/><!-- 0..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- 0..1 Date last changed -->
 <publisher value="[string]"/><!-- 0..1 Name of the publisher (organization or individual) -->
 <contact><!-- 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- 1..1 Natural language description of the search parameter -->
 <useContext><!-- 0..* UsageContext The context that the content is intended to support --></useContext>
 <jurisdiction><!-- 0..* CodeableConcept Intended jurisdiction for search parameter (if applicable) --></jurisdiction>
 <purpose value="[markdown]"/><!-- 0..1 Why this search parameter is defined -->
 <code value="[code]"/><!-- 1..1 Code used in URL -->
 <base value="[code]"/><!-- 1..* The resource type(s) this search parameter applies to -->
 <type value="[code]"/><!-- 1..1 number | date | string | token | reference | composite | quantity | uri | special -->
 <expression value="[string]"/><!-- ?? 0..1 FHIRPath expression that extracts the values -->
 <xpath value="[string]"/><!-- ?? 0..1 XPath that extracts the values -->
 <xpathUsage value="[code]"/><!-- ?? 0..1 normal | phonetic | nearby | distance | other -->
 <target value="[code]"/><!-- 0..* Types of resource (if a resource reference) -->
 <multipleOr value="[boolean]"/><!-- 0..1 Allow multiple values per parameter (or) -->
 <multipleAnd value="[boolean]"/><!-- 0..1 Allow multiple parameters (and) -->
 <comparator value="[code]"/><!-- 0..* eq | ne | gt | lt | ge | le | sa | eb | ap -->
 <modifier value="[code]"/><!-- 0..* missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType -->
 <chain value="[string]"/><!-- 0..* Chained names supported -->
 <component>  <!-- 0..* For Composite resources to define the parts -->
  <definition><!-- 1..1 canonical(SearchParameter) Defines how the part works --></definition>
  <expression value="[string]"/><!-- 1..1 Subexpression relative to main expression -->
 </component>
</SearchParameter>

JSON Template

{doco
  "resourceType" : "SearchParameter",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "url" : "<uri>", // R!  Canonical identifier for this search parameter, represented as a URI (globally unique)
  "version" : "<string>", // Business version of the search parameter
  "name" : "<string>", // R!  Name for this search parameter (computer friendly)
  "derivedFrom" : { canonical(SearchParameter) }, // Original definition for the search parameter
  "status" : "<code>", // R!  draft | active | retired | unknown
  "experimental" : <boolean>, // For testing purposes, not real usage
  "date" : "<dateTime>", // Date last changed
  "publisher" : "<string>", // Name of the publisher (organization or individual)
  "contact" : [{ ContactDetail }], // Contact details for the publisher
  "description" : "<markdown>", // R!  Natural language description of the search parameter
  "useContext" : [{ UsageContext }], // The context that the content is intended to support
  "jurisdiction" : [{ CodeableConcept }], // Intended jurisdiction for search parameter (if applicable)
  "purpose" : "<markdown>", // Why this search parameter is defined
  "code" : "<code>", // R!  Code used in URL
  "base" : ["<code>"], // R!  The resource type(s) this search parameter applies to
  "type" : "<code>", // R!  number | date | string | token | reference | composite | quantity | uri | special
  "expression" : "<string>", // C? FHIRPath expression that extracts the values
  "xpath" : "<string>", // C? XPath that extracts the values
  "xpathUsage" : "<code>", // C? normal | phonetic | nearby | distance | other
  "target" : ["<code>"], // Types of resource (if a resource reference)
  "multipleOr" : <boolean>, // Allow multiple values per parameter (or)
  "multipleAnd" : <boolean>, // Allow multiple parameters (and)
  "comparator" : ["<code>"], // eq | ne | gt | lt | ge | le | sa | eb | ap
  "modifier" : ["<code>"], // missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
  "chain" : ["<string>"], // Chained names supported
  "component" : [{ // For Composite resources to define the parts
    "definition" : { canonical(SearchParameter) }, // R!  Defines how the part works
    "expression" : "<string>" // R!  Subexpression relative to main expression
  }]
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:SearchParameter;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:SearchParameter.url [ uri ]; # 1..1 Canonical identifier for this search parameter, represented as a URI (globally unique)
  fhir:SearchParameter.version [ string ]; # 0..1 Business version of the search parameter
  fhir:SearchParameter.name [ string ]; # 1..1 Name for this search parameter (computer friendly)
  fhir:SearchParameter.derivedFrom [ canonical(SearchParameter) ]; # 0..1 Original definition for the search parameter
  fhir:SearchParameter.status [ code ]; # 1..1 draft | active | retired | unknown
  fhir:SearchParameter.experimental [ boolean ]; # 0..1 For testing purposes, not real usage
  fhir:SearchParameter.date [ dateTime ]; # 0..1 Date last changed
  fhir:SearchParameter.publisher [ string ]; # 0..1 Name of the publisher (organization or individual)
  fhir:SearchParameter.contact [ ContactDetail ], ... ; # 0..* Contact details for the publisher
  fhir:SearchParameter.description [ markdown ]; # 1..1 Natural language description of the search parameter
  fhir:SearchParameter.useContext [ UsageContext ], ... ; # 0..* The context that the content is intended to support
  fhir:SearchParameter.jurisdiction [ CodeableConcept ], ... ; # 0..* Intended jurisdiction for search parameter (if applicable)
  fhir:SearchParameter.purpose [ markdown ]; # 0..1 Why this search parameter is defined
  fhir:SearchParameter.code [ code ]; # 1..1 Code used in URL
  fhir:SearchParameter.base [ code ], ... ; # 1..* The resource type(s) this search parameter applies to
  fhir:SearchParameter.type [ code ]; # 1..1 number | date | string | token | reference | composite | quantity | uri | special
  fhir:SearchParameter.expression [ string ]; # 0..1 FHIRPath expression that extracts the values
  fhir:SearchParameter.xpath [ string ]; # 0..1 XPath that extracts the values
  fhir:SearchParameter.xpathUsage [ code ]; # 0..1 normal | phonetic | nearby | distance | other
  fhir:SearchParameter.target [ code ], ... ; # 0..* Types of resource (if a resource reference)
  fhir:SearchParameter.multipleOr [ boolean ]; # 0..1 Allow multiple values per parameter (or)
  fhir:SearchParameter.multipleAnd [ boolean ]; # 0..1 Allow multiple parameters (and)
  fhir:SearchParameter.comparator [ code ], ... ; # 0..* eq | ne | gt | lt | ge | le | sa | eb | ap
  fhir:SearchParameter.modifier [ code ], ... ; # 0..* missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType
  fhir:SearchParameter.chain [ string ], ... ; # 0..* Chained names supported
  fhir:SearchParameter.component [ # 0..* For Composite resources to define the parts
    fhir:SearchParameter.component.definition [ canonical(SearchParameter) ]; # 1..1 Defines how the part works
    fhir:SearchParameter.component.expression [ string ]; # 1..1 Subexpression relative to main expression
  ], ...;
]

Changes since Release 3

SearchParameter
SearchParameter.status
  • Change value set from http://hl7.org/fhir/ValueSet/publication-status|4.0.0 to http://hl7.org/fhir/ValueSet/publication-status|4.3.0-snapshot1
SearchParameter.base
  • Change value set from http://hl7.org/fhir/ValueSet/resource-types|4.0.0 to http://hl7.org/fhir/ValueSet/resource-types|4.3.0-snapshot1
SearchParameter.type
  • Change value set from http://hl7.org/fhir/ValueSet/search-param-type|4.0.0 to http://hl7.org/fhir/ValueSet/search-param-type|4.3.0-snapshot1
SearchParameter.xpathUsage
  • Change value set from http://hl7.org/fhir/ValueSet/search-xpath-usage|4.0.0 to http://hl7.org/fhir/ValueSet/search-xpath-usage|4.3.0-snapshot1
SearchParameter.target
  • Change value set from http://hl7.org/fhir/ValueSet/resource-types|4.0.0 to http://hl7.org/fhir/ValueSet/resource-types|4.3.0-snapshot1
SearchParameter.comparator
  • Change value set from http://hl7.org/fhir/ValueSet/search-comparator|4.0.0 to http://hl7.org/fhir/ValueSet/search-comparator|4.3.0-snapshot1
SearchParameter.modifier
  • Change value set from http://hl7.org/fhir/ValueSet/search-modifier-code|4.0.0 to http://hl7.org/fhir/ValueSet/search-modifier-code|4.3.0-snapshot1

See the Full Difference for further information

This analysis is available as XML or JSON.

See R3 <--> R4 Conversion Maps (status = 3 tests that all execute ok. All tests pass round-trip testing and 3 r3 resources are invalid (0 errors).)

 

See the Profiles & Extensions and the alternate definitions: Master Definition XML + JSON, XML Schema/Schematron + JSON Schema, ShEx (for Turtle) + see the extensions & the dependency analysis

5.5.5.1 Terminology Bindings

PathDefinitionTypeReference
SearchParameter.status RequiredPublicationStatus
SearchParameter.jurisdiction ExtensibleJurisdiction ValueSet
SearchParameter.base RequiredResourceType
SearchParameter.type RequiredSearchParamType
SearchParameter.xpathUsage RequiredXPathUsageType
SearchParameter.target RequiredResourceType
SearchParameter.comparator RequiredSearchComparator
SearchParameter.modifier RequiredSearchModifierCode

5.5.5.2 Constraints

idLevelLocationDescriptionExpression
spd-0Warning (base)Name should be usable as an identifier for the module by machine processing applications such as code generationname.matches('[A-Z]([A-Za-z0-9_]){0,254}')
spd-1Rule (base)If an xpath is present, there SHALL be an xpathUsagexpath.empty() or xpathUsage.exists()
spd-2Rule (base)Search parameters can only have chain names when the search parameter type is 'reference'chain.empty() or type = 'reference'

5.5.6 SearchParameters on Extensions

The SearchParameter resource may be used to define searches on extensions. Depending on the context of the extension (as defined in the StructureDefinition), this may require multiple instances of the SearchParameter.xpath element like so:

  • If the extension's context is scoped by a single resource, SearchParameter.base must be set to that resource, and there may be one or more xpath elements corresponding to the elements specified in the extension's context, e.g. "f:Patient/f:name/f:extension[@url='extension url']"
  • If the extension's context specifies multiple resources, SearchParameter.base must be set to "DomainResource".
  • You may use a single xpath element with the full URL of the Extension to indicate that the SearchParameter would search in all elements of the given SearchParameter.base resource for the given extension.

5.5.7 Search Parameters

Search parameters for this resource. The common parameters also apply. See Searching for more information about searching in REST, messaging, and services.

NameTypeDescriptionExpressionIn Common
basetokenThe resource type(s) this search parameter applies toSearchParameter.base
codetokenCode used in URLSearchParameter.code
componentreferenceDefines how the part worksSearchParameter.component.definition
(SearchParameter)
contexttokenA use context assigned to the search parameter(SearchParameter.useContext.value as CodeableConcept)
context-quantityquantityA quantity- or range-valued use context assigned to the search parameter(SearchParameter.useContext.value as Quantity) | (SearchParameter.useContext.value as Range)
context-typetokenA type of use context assigned to the search parameterSearchParameter.useContext.code
context-type-quantitycompositeA use context type and quantity- or range-based value assigned to the search parameterOn SearchParameter.useContext:
  context-type: code
  context-quantity: value.as(Quantity) | value.as(Range)
context-type-valuecompositeA use context type and value assigned to the search parameterOn SearchParameter.useContext:
  context-type: code
  context: value.as(CodeableConcept)
datedateThe search parameter publication dateSearchParameter.date
derived-fromreferenceOriginal definition for the search parameterSearchParameter.derivedFrom
(SearchParameter)
descriptionstringThe description of the search parameterSearchParameter.description
jurisdictiontokenIntended jurisdiction for the search parameterSearchParameter.jurisdiction
namestringComputationally friendly name of the search parameterSearchParameter.name
publisherstringName of the publisher of the search parameterSearchParameter.publisher
statustokenThe current status of the search parameterSearchParameter.status
targettokenTypes of resource (if a resource reference)SearchParameter.target
typetokennumber | date | string | token | reference | composite | quantity | uri | specialSearchParameter.type
urluriThe uri that identifies the search parameterSearchParameter.url
versiontokenThe business version of the search parameterSearchParameter.version