2nd DSTU Draft For Comment
This page is part of the FHIR Specification (v0.4.0: DSTU 2 Draft). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions 
Profile for extensiondefinition
{
"resourceType": "Profile",
"id": "ExtensionDefinition",
"meta": {
"lastUpdated": "2015-02-23T09:07:27.665+11:00"
},
"text": {
"status": "generated",
"div": "<div>!-- Snipped for Brevity --></div>"
},
"url": "http://hl7.org/fhir/Profile/ExtensionDefinition",
"name": "ExtensionDefinition",
"publisher": "HL7 FHIR Project (FHIR Management Group)",
"contact": [
{
"telecom": [
{
"system": "url",
"value": "http://hl7.org/fhir"
}
]
},
{
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/fhirmg/index.cfm"
}
]
}
],
"description": "Base Profile for ExtensionDefinition Resource",
"status": "draft",
"date": "2015-02-23T09:07:27+11:00",
"mapping": [
{
"identity": "v2",
"uri": "http://hl7.org/v2",
"name": "HL7 v2"
},
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM"
}
],
"type": "ExtensionDefinition",
"snapshot": {
"element": [
{
"path": "ExtensionDefinition",
"short": "Extension Definition",
"definition": "Defines an extension that can be used in resources.",
"synonym": [
"Extension"
],
"min": 1,
"max": "1",
"constraint": [
{
"key": "exd-2",
"name": "Element Path name",
"severity": "error",
"human": "All element names must start with the extension name",
"xpath": "count(f:element)=count(f:element[(not(preceding-sibling::f:element) and f:path/@value='Extension') or (preceding-sibling::f:element and starts-with(f:path/@value, concat('Extension', '.')))])"
}
],
"mapping": [
{
"identity": "v2",
"map": "N/A"
},
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.id",
"short": "Logical id of this artefact",
"definition": "The logical id of the resource, as used in the url for the resoure. Once assigned, this value never changes.",
"comments": "The only time that a resource does not have an id is when it is being submitted to the server using a create operation. Bundles always have an id, though it is usually a generated UUID.",
"min": 0,
"max": "1",
"type": [
{
"code": "id"
}
]
},
{
"path": "ExtensionDefinition.meta",
"short": "Metadata about the resource",
"definition": "The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content may not always be associated with version changes to the resource.",
"min": 0,
"max": "1",
"type": [
{
"code": "Meta"
}
]
},
{
"path": "ExtensionDefinition.implicitRules",
"short": "A set of rules under which this content was created",
"definition": "A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.",
"comments": "Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element as much as possible.",
"min": 0,
"max": "1",
"type": [
{
"code": "uri"
}
],
"isModifier": true
},
{
"path": "ExtensionDefinition.language",
"short": "Language of the resource content",
"definition": "The base language in which the resource is written.",
"comments": "Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource\n\nNot 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": 0,
"max": "1",
"type": [
{
"code": "code"
}
],
"binding": {
"name": "Language",
"isExtensible": false,
"conformance": "required",
"description": "A human language",
"referenceUri": "http://tools.ietf.org/html/bcp47"
}
},
{
"path": "ExtensionDefinition.text",
"short": "Text summary of the resource, for human interpretation",
"definition": "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.",
"comments": "Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative.",
"synonym": [
"narrative",
"html",
"xhtml",
"display"
],
"min": 0,
"max": "1",
"type": [
{
"code": "Narrative"
}
],
"condition": [
"dom-1"
],
"mapping": [
{
"identity": "rim",
"map": "Act.text?"
}
]
},
{
"path": "ExtensionDefinition.contained",
"short": "Contained, inline Resources",
"definition": "These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.",
"comments": "This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again.",
"synonym": [
"inline resources",
"anonymous resources",
"contained resources"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Resource"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.extension",
"short": "Additional Content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the resource. 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.",
"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.",
"synonym": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.modifierExtension",
"short": "Extensions that cannot be ignored",
"definition": "May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. 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.",
"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.",
"synonym": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.url",
"short": "Literal URL used to reference this extension",
"definition": "The URL at which this definition is (or will be) published, and which is used to reference this profile in extension urls in operational FHIR systems.",
"requirements": "So you can say, in a profile, what the full extensions URL should be. This is required to allow hosting profiles on multiple different servers, and to allow for the editorial process.",
"synonym": [
"url",
"authoritative-url",
"destination"
],
"min": 1,
"max": "1",
"type": [
{
"code": "uri"
}
]
},
{
"path": "ExtensionDefinition.identifier",
"short": "Other identifiers for the extension",
"definition": "Formal identifier that is used to identify this profile when it is represented in other formats (e.g. ISO 11179(, or referenced in a specification, model, design or an instance (should be globally unique OID, UUID, or URI), (if it's not possible to use the literal URI).",
"min": 0,
"max": "*",
"type": [
{
"code": "Identifier"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.version",
"short": "Logical id for this version of the extension",
"definition": "The identifier that is used to identify this version of the extension definition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the author manually.",
"comments": "N/A.",
"requirements": "There may be multiple resource versions of the extension definition that have this same identifier. The resource version id will change for technical reasons, whereas the stated version number needs to be under the author's control.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.name",
"short": "Descriptional name for this profile",
"definition": "A free text natural language name identifying the extension.",
"comments": "Not expected to be globally unique.",
"min": 1,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.display",
"short": "Use this name when displaying the value",
"definition": "Defined so that applications can use this name when displaying the value of the extension to the user.",
"comments": "Applications don't have to use this name, but can always fall back to it. In the absence of a value for this element, use the name.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.publisher",
"short": "Name of the publisher (Organization or individual)",
"definition": "The name of the individual or organization that published the extension definition.",
"comments": "Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.",
"requirements": "Helps establish the \"authority/credibility\" of the extension definition. May also allow for contact.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.contact",
"short": "Contact details of the publisher",
"definition": "Contacts to assist a user in finding and communicating with the publisher.",
"comments": "May be a web site, an email address, a telephone number (tel:), etc.",
"min": 0,
"max": "*",
"isSummary": true
},
{
"path": "ExtensionDefinition.contact.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references).",
"min": 0,
"max": "1",
"type": [
{
"code": "id"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"path": "ExtensionDefinition.contact.extension",
"short": "Additional Content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the element. 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.",
"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.",
"synonym": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"path": "ExtensionDefinition.contact.modifierExtension",
"short": "Extensions that cannot be ignored",
"definition": "May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element 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.",
"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.",
"synonym": [
"extensions",
"user content",
"modifiers"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.contact.name",
"short": "Name of a individual to contact",
"definition": "The name of an individual to contact regarding the extension definition.",
"comments": "If there is no named individual, the telecom is for the organization as a whole.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.contact.telecom",
"short": "Contact details for individual or publisher",
"definition": "Contact details for individual (if a name was provided) or the publisher.",
"min": 0,
"max": "*",
"type": [
{
"code": "ContactPoint"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.description",
"short": "Natural language description of the extension",
"definition": "A free text natural language description of the extension and its use.",
"comments": "This field can be used for things such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is *not* a rendering of the extension definition as conveyed in Profile.text.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.code",
"short": "Assist with indexing and finding",
"definition": "A set of terms from external terminologies that may be used to assist with indexing and searching of extension definitions.",
"requirements": "Assist in searching for appropriate extensions.",
"min": 0,
"max": "*",
"type": [
{
"code": "Coding"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.status",
"short": "draft | active | retired",
"definition": "The status of the extension.",
"requirements": "Allows filtering of extnsions that are appropriate for use vs. not.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"isModifier": true,
"isSummary": true,
"binding": {
"name": "ResourceProfileStatus",
"isExtensible": false,
"conformance": "required",
"description": "The lifecycle status of a Resource Profile",
"referenceReference": {
"reference": "http://hl7.org/fhir/vs/resource-profile-status"
}
}
},
{
"path": "ExtensionDefinition.experimental",
"short": "If for testing purposes, not real usage",
"definition": "This extension definition was authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.",
"requirements": "Allows filtering of extensions that are appropriate for use vs. not.",
"min": 0,
"max": "1",
"type": [
{
"code": "boolean"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.date",
"short": "Date for this version of the extension",
"definition": "The date that this version of the extension was published.",
"min": 0,
"max": "1",
"type": [
{
"code": "dateTime"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.requirements",
"short": "Scope and Usage this extesion is for",
"definition": "The Scope and Usage that this extension was created to meet.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.mapping",
"short": "External specification that the content is mapped to",
"definition": "An external specification that the content is mapped to.",
"min": 0,
"max": "*",
"constraint": [
{
"key": "exd-1",
"name": "Mapping",
"severity": "error",
"human": "Must have at a name or a uri (or both)",
"xpath": "exists(f:uri) or exists(f:name)"
}
]
},
{
"path": "ExtensionDefinition.mapping.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references).",
"min": 0,
"max": "1",
"type": [
{
"code": "id"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"path": "ExtensionDefinition.mapping.extension",
"short": "Additional Content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the element. 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.",
"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.",
"synonym": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"path": "ExtensionDefinition.mapping.modifierExtension",
"short": "Extensions that cannot be ignored",
"definition": "May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element 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.",
"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.",
"synonym": [
"extensions",
"user content",
"modifiers"
],
"min": 0,
"max": "*",
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.mapping.identity",
"short": "Internal id when this mapping is used",
"definition": "An Internal id that is used to identify this mapping set when specific mappings are made.",
"comments": "The specification is described once, with general comments, and then specific mappings are made that reference this declaration in the element definition.",
"min": 1,
"max": "1",
"type": [
{
"code": "id"
}
]
},
{
"path": "ExtensionDefinition.mapping.uri",
"short": "Identifies what this mapping refers to",
"definition": "A URI that identifies the specification that this mapping is expressed to.",
"comments": "A formal identity for the specification being mapped to helps with identifying maps consistently.",
"min": 0,
"max": "1",
"type": [
{
"code": "uri"
}
],
"condition": [
"exd-2"
]
},
{
"path": "ExtensionDefinition.mapping.name",
"short": "Names what this mapping refers to",
"definition": "A name for the specification that is being mapped to.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"condition": [
"exd-2"
]
},
{
"path": "ExtensionDefinition.mapping.comments",
"short": "Versions, Issues, Scope limitations etc",
"definition": "Comments about this mapping, including version notes, issues, scope limitations, and other important notes for usage.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.contextType",
"short": "resource | datatype | mapping | extension",
"definition": "Identifies the type of context to which the extension applies.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"binding": {
"name": "ExtensionContext",
"isExtensible": false,
"conformance": "required",
"description": "How an extension context is interpreted",
"referenceReference": {
"reference": "http://hl7.org/fhir/vs/extension-context"
}
}
},
{
"path": "ExtensionDefinition.context",
"short": "Where the extension can be used in instances",
"definition": "Identifies the types of resource or data type elements to which the extension can be applied.",
"comments": "If the context is an element that can have multiple types, then use (e.g.) value[x] if the extension works on all choice types, or otherwise an enumeration of explicitly named elements if not. Note that a context of \"string\" doesn't mean that the extension can be used with one of the string patterns such as \"id\" etc.",
"min": 1,
"max": "*",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.element",
"short": "Definition of the elements in the extension",
"definition": "Definition of the elements that are defined to be in the extension.",
"min": 1,
"max": "*",
"type": [
{
"code": "ElementDefinition"
}
],
"condition": [
"exd-1"
],
"constraint": [
{
"key": "exd-3",
"name": "Element Name",
"severity": "error",
"human": "Path names cannot contain .value",
"xpath": "not(contains(f:path/@value, '.value'))"
}
]
}
]
},
"differential": {
"element": [
{
"path": "ExtensionDefinition",
"short": "Extension Definition",
"definition": "Defines an extension that can be used in resources.",
"synonym": [
"Extension"
],
"min": 1,
"max": "1",
"constraint": [
{
"key": "exd-2",
"name": "Element Path name",
"severity": "error",
"human": "All element names must start with the extension name",
"xpath": "count(f:element)=count(f:element[(not(preceding-sibling::f:element) and f:path/@value='Extension') or (preceding-sibling::f:element and starts-with(f:path/@value, concat('Extension', '.')))])"
}
],
"mapping": [
{
"identity": "v2",
"map": "N/A"
},
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"path": "ExtensionDefinition.url",
"short": "Literal URL used to reference this extension",
"definition": "The URL at which this definition is (or will be) published, and which is used to reference this profile in extension urls in operational FHIR systems.",
"requirements": "So you can say, in a profile, what the full extensions URL should be. This is required to allow hosting profiles on multiple different servers, and to allow for the editorial process.",
"synonym": [
"url",
"authoritative-url",
"destination"
],
"min": 1,
"max": "1",
"type": [
{
"code": "uri"
}
]
},
{
"path": "ExtensionDefinition.identifier",
"short": "Other identifiers for the extension",
"definition": "Formal identifier that is used to identify this profile when it is represented in other formats (e.g. ISO 11179(, or referenced in a specification, model, design or an instance (should be globally unique OID, UUID, or URI), (if it's not possible to use the literal URI).",
"min": 0,
"max": "*",
"type": [
{
"code": "Identifier"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.version",
"short": "Logical id for this version of the extension",
"definition": "The identifier that is used to identify this version of the extension definition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the author manually.",
"comments": "N/A.",
"requirements": "There may be multiple resource versions of the extension definition that have this same identifier. The resource version id will change for technical reasons, whereas the stated version number needs to be under the author's control.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.name",
"short": "Descriptional name for this profile",
"definition": "A free text natural language name identifying the extension.",
"comments": "Not expected to be globally unique.",
"min": 1,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.display",
"short": "Use this name when displaying the value",
"definition": "Defined so that applications can use this name when displaying the value of the extension to the user.",
"comments": "Applications don't have to use this name, but can always fall back to it. In the absence of a value for this element, use the name.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.publisher",
"short": "Name of the publisher (Organization or individual)",
"definition": "The name of the individual or organization that published the extension definition.",
"comments": "Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.",
"requirements": "Helps establish the \"authority/credibility\" of the extension definition. May also allow for contact.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.contact",
"short": "Contact details of the publisher",
"definition": "Contacts to assist a user in finding and communicating with the publisher.",
"comments": "May be a web site, an email address, a telephone number (tel:), etc.",
"min": 0,
"max": "*",
"isSummary": true
},
{
"path": "ExtensionDefinition.contact.name",
"short": "Name of a individual to contact",
"definition": "The name of an individual to contact regarding the extension definition.",
"comments": "If there is no named individual, the telecom is for the organization as a whole.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.contact.telecom",
"short": "Contact details for individual or publisher",
"definition": "Contact details for individual (if a name was provided) or the publisher.",
"min": 0,
"max": "*",
"type": [
{
"code": "ContactPoint"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.description",
"short": "Natural language description of the extension",
"definition": "A free text natural language description of the extension and its use.",
"comments": "This field can be used for things such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is *not* a rendering of the extension definition as conveyed in Profile.text.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.code",
"short": "Assist with indexing and finding",
"definition": "A set of terms from external terminologies that may be used to assist with indexing and searching of extension definitions.",
"requirements": "Assist in searching for appropriate extensions.",
"min": 0,
"max": "*",
"type": [
{
"code": "Coding"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.status",
"short": "draft | active | retired",
"definition": "The status of the extension.",
"requirements": "Allows filtering of extnsions that are appropriate for use vs. not.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"isModifier": true,
"isSummary": true,
"binding": {
"name": "ResourceProfileStatus",
"isExtensible": false,
"conformance": "required",
"description": "The lifecycle status of a Resource Profile",
"referenceReference": {
"reference": "http://hl7.org/fhir/vs/resource-profile-status"
}
}
},
{
"path": "ExtensionDefinition.experimental",
"short": "If for testing purposes, not real usage",
"definition": "This extension definition was authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.",
"requirements": "Allows filtering of extensions that are appropriate for use vs. not.",
"min": 0,
"max": "1",
"type": [
{
"code": "boolean"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.date",
"short": "Date for this version of the extension",
"definition": "The date that this version of the extension was published.",
"min": 0,
"max": "1",
"type": [
{
"code": "dateTime"
}
],
"isSummary": true
},
{
"path": "ExtensionDefinition.requirements",
"short": "Scope and Usage this extesion is for",
"definition": "The Scope and Usage that this extension was created to meet.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.mapping",
"short": "External specification that the content is mapped to",
"definition": "An external specification that the content is mapped to.",
"min": 0,
"max": "*",
"constraint": [
{
"key": "exd-1",
"name": "Mapping",
"severity": "error",
"human": "Must have at a name or a uri (or both)",
"xpath": "exists(f:uri) or exists(f:name)"
}
]
},
{
"path": "ExtensionDefinition.mapping.identity",
"short": "Internal id when this mapping is used",
"definition": "An Internal id that is used to identify this mapping set when specific mappings are made.",
"comments": "The specification is described once, with general comments, and then specific mappings are made that reference this declaration in the element definition.",
"min": 1,
"max": "1",
"type": [
{
"code": "id"
}
]
},
{
"path": "ExtensionDefinition.mapping.uri",
"short": "Identifies what this mapping refers to",
"definition": "A URI that identifies the specification that this mapping is expressed to.",
"comments": "A formal identity for the specification being mapped to helps with identifying maps consistently.",
"min": 0,
"max": "1",
"type": [
{
"code": "uri"
}
],
"condition": [
"exd-2"
]
},
{
"path": "ExtensionDefinition.mapping.name",
"short": "Names what this mapping refers to",
"definition": "A name for the specification that is being mapped to.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
],
"condition": [
"exd-2"
]
},
{
"path": "ExtensionDefinition.mapping.comments",
"short": "Versions, Issues, Scope limitations etc",
"definition": "Comments about this mapping, including version notes, issues, scope limitations, and other important notes for usage.",
"min": 0,
"max": "1",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.contextType",
"short": "resource | datatype | mapping | extension",
"definition": "Identifies the type of context to which the extension applies.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"binding": {
"name": "ExtensionContext",
"isExtensible": false,
"conformance": "required",
"description": "How an extension context is interpreted",
"referenceReference": {
"reference": "http://hl7.org/fhir/vs/extension-context"
}
}
},
{
"path": "ExtensionDefinition.context",
"short": "Where the extension can be used in instances",
"definition": "Identifies the types of resource or data type elements to which the extension can be applied.",
"comments": "If the context is an element that can have multiple types, then use (e.g.) value[x] if the extension works on all choice types, or otherwise an enumeration of explicitly named elements if not. Note that a context of \"string\" doesn't mean that the extension can be used with one of the string patterns such as \"id\" etc.",
"min": 1,
"max": "*",
"type": [
{
"code": "string"
}
]
},
{
"path": "ExtensionDefinition.element",
"short": "Definition of the elements in the extension",
"definition": "Definition of the elements that are defined to be in the extension.",
"min": 1,
"max": "*",
"type": [
{
"code": "ElementDefinition"
}
],
"condition": [
"exd-1"
],
"constraint": [
{
"key": "exd-3",
"name": "Element Name",
"severity": "error",
"human": "Path names cannot contain .value",
"xpath": "not(contains(f:path/@value, '.value'))"
}
]
}
]
}
}
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.
© HL7.org 2011+. FHIR DSTU (v0.4.0-4167) generated on Mon, Feb 23, 2015 09:20+1100.
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