Extension

⚠️ This is a template for describing your Extension (StructureDefinition) resource. To start, update the canonical URL above to the one of your resource. Don't forget to remove this paragraph.

Metadata

These are the details for this resource:

Name	Context	Canonical_URL	Status
FavouriteCowboyHat	Element	http://example.org/StructureDefinition/FavouriteCowboyHat	active

Context

This extension can be used on element: Element

Resource content

These are different views on this resource:

This is the tree view:

FavouriteCowboyHat (Extension)	I		Extension	There are no (further) constraints on this element Element id Extension Short description Optional Extensions Element Definition Optional Extension Element - found in all resources. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value http://example.org/StructureDefinition/FavouriteCowboyHat Mappings rim: N/A
value[x]		0..1	Binding	Element id Extension.value[x] Short description Value of extension Definition Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Binding AllCowboyHatTypes (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
valueCoding			Coding	Data type Coding

This is the detailed view:

Extension
Definition	Optional Extension Element - found in all resources.
Cardinality	0...*
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Extension.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Extension.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...0
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Cardinality	1...1
Type	uri
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Fixed Value	http://example.org/StructureDefinition/FavouriteCowboyHat
Mappings	rim: N/A
Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a list).
Cardinality	0...1
Type	Coding
Binding	AllCowboyHatTypes (required)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A

This is the resource in XML:

<StructureDefinition xmlns="http://hl7.org/fhir">
    <id value="FavouriteCowboyHat" />
    <url value="http://example.org/StructureDefinition/FavouriteCowboyHat" />
    <name value="FavouriteCowboyHat" />
    <status value="active" />
    <fhirVersion value="4.0.1" />
    <mapping>
        <identity value="rim" />
        <uri value="http://hl7.org/v3" />
        <name value="RIM Mapping" />
    </mapping>
    <kind value="complex-type" />
    <abstract value="false" />
    <context>
        <type value="element" />
        <expression value="Element" />
    </context>
    <type value="Extension" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
    <derivation value="constraint" />
    <differential>
        <element id="Extension.extension">
            <path value="Extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.url">
            <path value="Extension.url" />
            <fixedUri value="http://example.org/StructureDefinition/FavouriteCowboyHat" />
        </element>
        <element id="Extension.value[x]">
            <path value="Extension.value[x]" />
            <type>
                <code value="Coding" />
            </type>
            <binding>
                <strength value="required" />
                <valueSet value="http://example.org/ValueSet/AllCowboyHatTypes" />
            </binding>
        </element>
    </differential>
</StructureDefinition>

This is the resource in JSON:

{
    "resourceType": "StructureDefinition",
    "id": "FavouriteCowboyHat",
    "url": "http://example.org/StructureDefinition/FavouriteCowboyHat",
    "name": "FavouriteCowboyHat",
    "status": "active",
    "fhirVersion": "4.0.1",
    "mapping":  [
        {
            "identity": "rim",
            "uri": "http://hl7.org/v3",
            "name": "RIM Mapping"
        }
    ],
    "kind": "complex-type",
    "abstract": false,
    "context":  [
        {
            "type": "element",
            "expression": "Element"
        }
    ],
    "type": "Extension",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Extension.extension",
                "path": "Extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.url",
                "path": "Extension.url",
                "fixedUri": "http://example.org/StructureDefinition/FavouriteCowboyHat"
            },
            {
                "id": "Extension.value[x]",
                "path": "Extension.value[x]",
                "type":  [
                    {
                        "code": "Coding"
                    }
                ],
                "binding": {
                    "strength": "required",
                    "valueSet": "http://example.org/ValueSet/AllCowboyHatTypes"
                }
            }
        ]
    }
}

FavouriteCowboyHat

Terminology Bindings

These are the terminology bindings within this resource:

Path	Conformance	ValueSet
Extension.value[x]	required	http://example.org/ValueSet/AllCowboyHatTypes

Constraints

These are the constraints (invariants) defined within this resource: