HL7 FHIR Implementation Guide: Profiles for Transfusion and Vaccination Adverse Event Detection and Reporting
1.0.1 - STU 1 Technical Correction United States of America flag

This page is part of the Profiles for ICSR Transfusion and Vaccination Adverse Event Detection and Reporting (v1.0.1: STU 1 Update) based on FHIR R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Extension: AdditionalDocumentInformation - Detailed Descriptions

Draft as of 2023-08-29

Definitions for the icsr-ext-additionaldocumentinformation extension.

Guidance on how to interpret the contents of this table can be found here

0. Extension
Definition

A set of information to indicate what additional documentation exists.

2. Extension.extension
Control1..?
4. Extension.extension:availableFlag
Slice NameavailableFlag
Control1..1
Must Supporttrue
6. Extension.extension:availableFlag.extension
Control0..0
8. Extension.extension:availableFlag.url
Fixed ValueavailableFlag
10. Extension.extension:availableFlag.value[x]
Control1..?
Typeboolean
[x] NoteSee Choice of Data Types for further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
12. Extension.extension:document
Slice Namedocument
Control0..*
Must Supporttrue
14. Extension.extension:document.extension
Control0..0
16. Extension.extension:document.url
Fixed Valuedocument
18. Extension.extension:document.value[x]
Control1..?
TypeAttachment
[x] NoteSee Choice of Data Types for further information about how to use [x]
Must Supporttrue
20. Extension.extension:document.value[x].contentType
Must Supporttrue
22. Extension.extension:document.value[x].url
Control1..?
Must Supporttrue
24. Extension.extension:document.value[x].title
Control1..?
Must Supporttrue
26. Extension.url
Fixed Valuehttp://hl7.org/fhir/us/icsr-ae-reporting/StructureDefinition/icsr-ext-additionaldocumentinformation
28. Extension.value[x]
Control0..0

Guidance on how to interpret the contents of this table can be found here

0. Extension
Definition

A set of information to indicate what additional documentation exists.


Optional Extension Element - found in all resources.

ShortExtensionOptional Extensions Element
Control0..*
This element is affected by the following invariants: ele-1
Is Modifierfalse
Invariantsele-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())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition

An Extension


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.

ShortExtensionAdditional content defined by implementations
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.

Control10..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
4. Extension.extension:availableFlag
Slice NameavailableFlag
Definition

An Extension

ShortExtensionAdditional content defined by implementations
Control10..1*
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-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())
6. Extension.extension:availableFlag.extension
Definition

An Extension


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.

ShortExtensionAdditional content defined by implementations
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.

Control0..0*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
8. Extension.extension:availableFlag.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed ValueavailableFlag
10. Extension.extension:availableFlag.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control10..1
Typeboolean, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, Signature, unsignedInt, time
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. Extension.extension:document
Slice Namedocument
Definition

An Extension

ShortExtensionAdditional content defined by implementations
Control0..*
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-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())
14. Extension.extension:document.extension
Definition

An Extension


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.

ShortExtensionAdditional content defined by implementations
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.

Control0..0*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
16. Extension.extension:document.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed Valuedocument
18. Extension.extension:document.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control10..1
TypeAttachment, date, Meta, Address, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. Extension.extension:document.value[x].contentType
Definition

Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

ShortMime type of the content, with charset etc.
Control0..1
BindingThe codes SHALL be taken from Mime Typeshttp://hl7.org/fhir/ValueSet/mimetypes|4.0.1

The mime type of an attachment. Any valid mime type is allowed.

Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

Processors of the data need to be able to know how to interpret the data.

Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Extension.extension:document.value[x].url
Definition

A location where the data can be accessed.

ShortUri where the data can be found
Comments

If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

Control10..1
Typeurl
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

The data needs to be transmitted by reference.

Example<br/><b>General</b>:http://www.acme.com/logo-small.png
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. Extension.extension:document.value[x].title
Definition

A label or set of text to display in place of the data.

ShortLabel to display in place of the data
Control10..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

Applications need a label to display to a human user in place of the actual data if the data cannot be rendered or perceived by the viewer.

Example<br/><b>General</b>:Official Corporate Logo
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. Extension.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed Valuehttp://hl7.org/fhir/us/icsr-ae-reporting/StructureDefinition/icsr-ext-additionaldocumentinformation
28. Extension.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control0..01
TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be found here

0. Extension
Definition

A set of information to indicate what additional documentation exists.

ShortExtension
Control0..*
This element is affected by the following invariants: ele-1
Is Modifierfalse
Invariantsele-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())
2. 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.

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
4. Extension.extension
Definition

An Extension

ShortExtension
Control1..*
TypeExtension
Is Modifierfalse
Summaryfalse
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
6. Extension.extension:availableFlag
Slice NameavailableFlag
Definition

An Extension

ShortExtension
Control1..1
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-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())
8. Extension.extension:availableFlag.id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
10. Extension.extension:availableFlag.extension
Definition

An Extension

ShortExtension
Control0..0
TypeExtension
Is Modifierfalse
Summaryfalse
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
12. Extension.extension:availableFlag.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed ValueavailableFlag
14. Extension.extension:availableFlag.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control1..1
Typeboolean
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Extension.extension:document
Slice Namedocument
Definition

An Extension

ShortExtension
Control0..*
TypeExtension
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-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())
18. Extension.extension:document.id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
20. Extension.extension:document.extension
Definition

An Extension

ShortExtension
Control0..0
TypeExtension
Is Modifierfalse
Summaryfalse
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
22. Extension.extension:document.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed Valuedocument
24. Extension.extension:document.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control1..1
TypeAttachment
[x] NoteSee Choice of Data Types for further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. Extension.extension:document.value[x].id
Definition

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

ShortUnique id for inter-element referencing
Control0..1
Typestring
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
28. Extension.extension:document.value[x].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.

ShortAdditional content defined by implementations
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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis element introduces a set of slices on Extension.extension.value[x].extension. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators:
  • value @ url
30. Extension.extension:document.value[x].contentType
Definition

Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

ShortMime type of the content, with charset etc.
Control0..1
BindingThe codes SHALL be taken from Mime Types: The mime type of an attachment. Any valid mime type is allowed.
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

Processors of the data need to be able to know how to interpret the data.

Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
32. Extension.extension:document.value[x].language
Definition

The human language of the content. The value can be any valid value according to BCP 47.

ShortHuman language of the content (BCP-47)
Control0..1
BindingThe codes SHOULD be taken from CommonLanguages: A human language.
Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Users need to be able to choose between the languages in a set of attachments.

Example<br/><b>General</b>:en-AU
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. Extension.extension:document.value[x].data
Definition

The actual data of the attachment - a sequence of bytes, base64 encoded.

ShortData inline, base64ed
Comments

The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.

Control0..1
Typebase64Binary
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Requirements

The data needs to able to be transmitted inline.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. Extension.extension:document.value[x].url
Definition

A location where the data can be accessed.

ShortUri where the data can be found
Comments

If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

Control1..1
Typeurl
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

The data needs to be transmitted by reference.

Example<br/><b>General</b>:http://www.acme.com/logo-small.png
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. Extension.extension:document.value[x].size
Definition

The number of bytes of data that make up this attachment (before base64 encoding, if that is done).

ShortNumber of bytes of content (if url provided)
Comments

The number of bytes is redundant if the data is provided as a base64binary, but is useful if the data is provided as a url reference.

Control0..1
TypeunsignedInt
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Representing the size allows applications to determine whether they should fetch the content automatically in advance, or refuse to fetch it at all.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. Extension.extension:document.value[x].hash
Definition

The calculated hash of the data using SHA-1. Represented using base64.

ShortHash of the data (sha-1, base64ed)
Comments

The hash is calculated on the data prior to base64 encoding, if the data is based64 encoded. The hash is not intended to support digital signatures. Where protection against malicious threats a digital signature should be considered, see Provenance.signature for mechanism to protect a resource with a digital signature.

Control0..1
Typebase64Binary
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Included so that applications can verify that the contents of a location have not changed due to technical failures (e.g., storage rot, transport glitch, incorrect version).

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. Extension.extension:document.value[x].title
Definition

A label or set of text to display in place of the data.

ShortLabel to display in place of the data
Control1..1
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summarytrue
Requirements

Applications need a label to display to a human user in place of the actual data if the data cannot be rendered or perceived by the viewer.

Example<br/><b>General</b>:Official Corporate Logo
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. Extension.extension:document.value[x].creation
Definition

The date that the attachment was first created.

ShortDate attachment was first created
Control0..1
TypedateTime
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

This is often tracked as an integrity issue for use of the attachment.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. Extension.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Shortidentifies the meaning of the extension
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.

Control1..1
Typeuri
Is Modifierfalse
XML FormatIn the XML format, this property is represented as an attribute.
Summaryfalse
Fixed Valuehttp://hl7.org/fhir/us/icsr-ae-reporting/StructureDefinition/icsr-ext-additionaldocumentinformation
48. Extension.value[x]
Definition

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

ShortValue of extension
Control0..0
TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))