HL7 Czech Imaging Report IG
0.1.0-ballot - ci-build CZ

HL7 Czech Imaging Report IG, published by HL7 Czech Republic. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7-cz/img/ and changes regularly. See the Directory of published versions

## Resource Profile: Imaging Key Image Document Reference: Imaging Report (CZ) - Detailed Descriptions

Draft as of 2026-05-26

Definitions for the cz-keyImage-documentReference resource profile

- Key Elements Table
- Differential Table
- Snapshot Table

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

0. DocumentReference
Definition | A reference to a document of any kind for any purpose. Provides metadata about the document so that the document can be discovered and managed. The scope of a document is any seralized object with a mime-type, so includes formal patient centric documents (CDA), cliical notes, scanned paper, and non-patient specific documents like policy text.
Short | A reference to a document
Comments | Usually, this is used for documents other than those defined by FHIR.
Control | 0..*
Is Modifier | false
Impose Profile | This profile also requires that the instance also conform this additional profile: DocumentReference: Key Image
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty()) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty()) dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. DocumentReference.implicitRules
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. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Short | A set of rules under which this content was created
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. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. DocumentReference.extension
Definition | An Extension May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | ExtensionAdditional 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.
Control | 10..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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())
Slicing | This element introduces a set of slices on `DocumentReference.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url value @ value
6. DocumentReference.extension:basedOn
Slice Name | basedOn
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.basedOn for use in FHIR R4) (Extension Type: Reference)
Is Modifier | false
Summary | false
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()`) 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())
8. DocumentReference.extension:basedOn.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.
Short | ExtensionAdditional 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.
Control | 0..0*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`) 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())
Slicing | This element introduces a set of slices on `DocumentReference.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
10. DocumentReference.extension:basedOn.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/5.0/StructureDefinition/extension-DocumentReference.basedOn`
12. DocumentReference.extension:basedOn.value[x]
Definition | A procedure that is fulfilled in whole or in part by the creation of this media. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Procedure that caused this media to be createdValue of extension
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1
Type | Reference(Appointment, AppointmentResponse, Care plan: Imaging Report (CZ), Claim, CommunicationRequest, Contract, CoverageEligibilityRequest, DeviceRequest, EnrollmentRequest, ImmunizationRecommendation, MedicationRequest, NutritionOrder, ServiceRequest, SupplyRequest, VisionPrescription, Service Request: Imaging Report (CZ)), 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, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. DocumentReference.extension:basedOn/imorderaccession
Slice Name | basedOn/imorderaccession
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.basedOn for use in FHIR R4) (Extension Type: Reference)
Is Modifier | false
Summary | false
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()`) 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())
16. DocumentReference.extension:basedOn/imorderaccession.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.
Short | ExtensionAdditional 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.
Control | 0..0*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`) 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())
Slicing | This element introduces a set of slices on `DocumentReference.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
18. DocumentReference.extension:basedOn/imorderaccession.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/5.0/StructureDefinition/extension-DocumentReference.basedOn`
20. DocumentReference.extension:basedOn/imorderaccession.value[x]
Definition | A procedure that is fulfilled in whole or in part by the creation of this media. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Procedure that caused this media to be createdValue of extension
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1
Type | Reference(Service Request: Imaging Report (CZ)), 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, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. DocumentReference.extension:basedOn/imorderaccession.value[x].identifier
Definition | An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Short | Logical reference, when literal reference is not known
Comments | When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 10..1
Type | Identifier(Imaging Accession Number Identifier)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. DocumentReference.extension:modality
Slice Name | modality
Definition | Imaging modality used. This may include both acquisition and non-acquisition modalities.
Short | Imaging modality used
Comments | `Media.modality` maps to R4 `Media.modality`. So is mapped as Equivalent.
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.modality for use in FHIR R4) (Extension Type: CodeableConcept)
Is Modifier | false
Summary | false
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()`) 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())
26. DocumentReference.extension:note
Slice Name | note
Definition | Additional notes that apply to this resource or element.
Short | Additional notes that apply to this resource or element.
Comments | This extension SHALL NOT be used if the resource already has standard 'note' element (or equivalent) of type Annotation on the same element
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Note) (Extension Type: Annotation)
Is Modifier | false
Summary | false
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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
28. DocumentReference.extension:view
Slice Name | view
Definition | This cross version extension includes the FHIR R4 version of the Media.view field which has at this point in time (April 18, 2025), not yet been included in the extension pack.
Short | Media.view extension
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Media.view extension) (Extension Type: CodeableConcept)
Is Modifier | false
Summary | false
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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
30. DocumentReference.modifierExtension
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 and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
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())
32. DocumentReference.identifier
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..*
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `DocumentReference.identifier`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
34. DocumentReference.identifier:seriesInstanceUid
Slice Name | seriesInstanceUid
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1*
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. DocumentReference.identifier:seriesInstanceUid.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. DocumentReference.identifier:seriesInstanceUid.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Description of identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 10..1
Binding | Unless not suitable, these codes SHALL be taken from Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type|4.0.1 (extensible to `http://hl7.org/fhir/ValueSet/identifier-type|4.0.1` ) A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Pattern Value | `{ "coding" : [{ "system" : "https://hl7.cz/fhir/img/CodeSystem/codesystem-missing-dicom-terminology", "code" : "00080018" }] }`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. DocumentReference.identifier:seriesInstanceUid.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | The namespace for the identifier value
Comments | Identifier.system is always case sensitive.
Control | 10..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Pattern Value | `urn:ietf:rfc:3986`
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. DocumentReference.identifier:seriesInstanceUid.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | The value that is unique
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 10..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. DocumentReference.identifier:seriesInstanceUid.assigner
Definition | Organization that issued/manages the identifier.
Short | Organization that issued id (may be just text)
Comments | The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Control | 0..1
Type | Reference(Organization (CZ core), Organization)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. DocumentReference.identifier:sopClassInstanceUid
Slice Name | sopClassInstanceUid
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1*
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
48. DocumentReference.identifier:sopClassInstanceUid.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
50. DocumentReference.identifier:sopClassInstanceUid.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Description of identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 10..1
Binding | Unless not suitable, these codes SHALL be taken from Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type|4.0.1 (extensible to `http://hl7.org/fhir/ValueSet/identifier-type|4.0.1` ) A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Pattern Value | `{ "coding" : [{ "system" : "http://dicom.nema.org/resources/ontology/DCM", "code" : "112002" }] }`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
52. DocumentReference.identifier:sopClassInstanceUid.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | The namespace for the identifier value
Comments | Identifier.system is always case sensitive.
Control | 10..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Pattern Value | `urn:ietf:rfc:3986`
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
54. DocumentReference.identifier:sopClassInstanceUid.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | The value that is unique
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 10..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
56. DocumentReference.identifier:sopClassInstanceUid.assigner
Definition | Organization that issued/manages the identifier.
Short | Organization that issued id (may be just text)
Comments | The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Control | 0..1
Type | Reference(Organization (CZ core), Organization)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
58. DocumentReference.status
Definition | The status of this document reference.
Short | current | superseded | entered-in-error
Comments | This is the status of the DocumentReference object, which might be independent from the docStatus element. This element is labeled as a modifier because the status contains the codes that mark the document or reference as not currently valid.
Control | 1..1
Binding | The codes SHALL be taken from DocumentReferenceStatus http://hl7.org/fhir/ValueSet/document-reference-status|4.0.1 (required to `http://hl7.org/fhir/ValueSet/document-reference-status|4.0.1` ) The status of the document reference.
Type | code
Is Modifier | true because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
60. DocumentReference.category
Definition | A categorization for the type of document referenced - helps for indexing and searching. This may be implied by or derived from the code specified in the DocumentReference.type.
Short | Categorization of document
Comments | Key metadata element describing the the category or classification of the document. This is a broader perspective that groups similar documents based on how they would be used. This is a primary key used in searching.
Control | 10..*
Binding | For example codes, see DocumentClassValueSet http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1 (example to `http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1` ) High-level kind of a clinical document at a macro level.
Type | CodeableConcept
Is Modifier | false
Summary | true
Alternate Names | claxs
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `DocumentReference.category`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
62. DocumentReference.category:imkeyimages
Slice Name | imkeyimages
Definition | A categorization for the type of document referenced - helps for indexing and searching. This may be implied by or derived from the code specified in the DocumentReference.type.
Short | Categorization of document
Comments | Key metadata element describing the the category or classification of the document. This is a broader perspective that groups similar documents based on how they would be used. This is a primary key used in searching.
Control | 10..1*
Binding | For example codes, see DocumentClassValueSet http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1 (example to `http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1` ) High-level kind of a clinical document at a macro level.
Type | CodeableConcept
Is Modifier | false
Summary | true
Alternate Names | claxs
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
64. DocumentReference.category:imkeyimages.coding
Definition | A reference to a code defined by a terminology system.
Short | Code defined by a terminology system
Comments | Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Control | 10..*
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `DocumentReference.category.coding`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
66. DocumentReference.category:imkeyimages.coding:keyimagecode
Slice Name | keyimagecode
Definition | A reference to a code defined by a terminology system.
Short | Code defined by a terminology system
Comments | Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Control | 10..1*
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Pattern Value | `{ "system" : "http://loinc.org", "code" : "55113-5", "display" : "Key images Document Radiology" }`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
68. DocumentReference.subject
Definition | Who or what the document is about. The document can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of farm animals, or a set of patients that share a common exposure).
Short | Who/what is the subject of the document
Control | 10..1
Type | Reference(Patient (CZ core), Patient: Animal (CZ), Patient, Practitioner, Group, Device)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
70. DocumentReference.author
Definition | Identifies who is responsible for adding the information to the document.
Short | Who and/or what authored the document
Comments | Not necessarily who did the actual data entry (i.e. typist) or who was the source (informant).
Control | 0..*
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core), Device: Performer/Observer (CZ core), Medical Device (CZ core), Patient (CZ core), Related Person (CZ core), Practitioner, PractitionerRole, Organization, Device, Patient, RelatedPerson)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `DocumentReference.author`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
72. DocumentReference.author:performer
Slice Name | performer
Definition | Identifies who is responsible for adding the information to the document.
Short | Who and/or what authored the document
Comments | Not necessarily who did the actual data entry (i.e. typist) or who was the source (informant).
Control | 0..*
Type | Reference(Practitioner Role (CZ core), Practitioner, PractitionerRole, Organization, Device, Patient, RelatedPerson)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
74. DocumentReference.authenticator
Definition | Which person or organization authenticates that this document is valid.
Short | Who/what authenticated the document
Comments | Represents a participant within the author institution who has legally authenticated or attested the document. Legal authentication implies that a document has been signed manually or electronically by the legal Authenticator.
Control | 0..1
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core), Practitioner, PractitionerRole, Organization)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
76. DocumentReference.custodian
Definition | Identifies the organization or group who is responsible for ongoing maintenance of and access to the document.
Short | Organization which maintains the document
Comments | Identifies the logical organization (software system, vendor, or department) to go to find the current version, where to report issues, etc. This is different from the physical location (URL, disk drive, or server) of the document, which is the technical location of the document, which host may be delegated to the management of some other organization.
Control | 0..1
Type | Reference(Organization (CZ core), Organization)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
78. DocumentReference.content
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 1..*
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `DocumentReference.content`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ extension.value
80. DocumentReference.content.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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())
82. DocumentReference.content.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
84. DocumentReference.content:thumbnail
Slice Name | thumbnail
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 01..1*
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
86. DocumentReference.content:thumbnail.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.
Short | ExtensionAdditional 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.
Control | 10..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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())
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
88. DocumentReference.content:thumbnail.extension:thumbnail
Slice Name | thumbnail
Definition | True or False indicating whether the content is a thumbnail.
Short | Thumbnail state
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
Is Modifier | false
Summary | false
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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
90. DocumentReference.content:thumbnail.extension:thumbnail.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.
Short | ExtensionAdditional 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.
Control | 0..0*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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())
Slicing | This element introduces a set of slices on `DocumentReference.content.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
92. DocumentReference.content:thumbnail.extension:thumbnail.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/StructureDefinition/documentreference-thumbnail`
94. DocumentReference.content:thumbnail.extension:thumbnail.value[x]
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Value of extension
Control | 10..1
Type | boolean, 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] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Pattern Value | `true`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
96. DocumentReference.content:thumbnail.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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())
98. DocumentReference.content:thumbnail.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
100. DocumentReference.content:content
Slice Name | content
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 1..1*
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
102. DocumentReference.content:content.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.
Short | ExtensionAdditional 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.
Control | 10..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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())
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
104. DocumentReference.content:content.extension:thumbnail
Slice Name | thumbnail
Definition | True or False indicating whether the content is a thumbnail.
Short | Thumbnail state
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
Is Modifier | false
Summary | false
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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
106. DocumentReference.content:content.extension:thumbnail.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.
Short | ExtensionAdditional 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.
Control | 0..0*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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())
Slicing | This element introduces a set of slices on `DocumentReference.content.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
108. DocumentReference.content:content.extension:thumbnail.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/StructureDefinition/documentreference-thumbnail`
110. DocumentReference.content:content.extension:thumbnail.value[x]
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Value of extension
Control | 10..1
Type | boolean, 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] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Pattern Value | `false`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
112. DocumentReference.content:content.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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())
114. DocumentReference.content:content.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
116. DocumentReference.content:content.attachment.url
Definition | A location where the data can be accessed.
Short | Uri 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.
Control | 10..1
Type | url
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | The data needs to be transmitted by reference.
Example | General: http://www.acme.com/logo-small.png
Invariants | ele-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 foundhere

0. DocumentReference
Impose Profile | This profile also requires that the instance also conform this additional profile: DocumentReference: Key Image
2. DocumentReference.extension
Control | 1..?
Slicing | This element introduces a set of slices on `DocumentReference.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url value @ value
4. DocumentReference.extension:basedOn
Slice Name | basedOn
Control | 0..1
Type | Extension(Cross-version Extension for R5.DocumentReference.basedOn for use in FHIR R4) (Extension Type: Reference)
6. DocumentReference.extension:basedOn.extension
Control | 0..0
8. DocumentReference.extension:basedOn.value[x]
Type | Reference(Appointment, AppointmentResponse, Care plan: Imaging Report (CZ), Claim, CommunicationRequest, Contract, CoverageEligibilityRequest, DeviceRequest, EnrollmentRequest, ImmunizationRecommendation, MedicationRequest, NutritionOrder, ServiceRequest, SupplyRequest, VisionPrescription, Service Request: Imaging Report (CZ))
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
10. DocumentReference.extension:basedOn/imorderaccession
Slice Name | basedOn/imorderaccession
Control | 0..1
12. DocumentReference.extension:basedOn/imorderaccession.extension
Control | 0..0
14. DocumentReference.extension:basedOn/imorderaccession.value[x]
Type | Reference(Service Request: Imaging Report (CZ))
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
16. DocumentReference.extension:basedOn/imorderaccession.value[x].identifier
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..?
Type | Identifier(Imaging Accession Number Identifier)
18. DocumentReference.extension:modality
Slice Name | modality
Control | 1..1
Type | Extension(Cross-version Extension for R5.DocumentReference.modality for use in FHIR R4) (Extension Type: CodeableConcept)
20. DocumentReference.extension:note
Slice Name | note
Control | 0..1
Type | Extension(Note) (Extension Type: Annotation)
22. DocumentReference.extension:view
Slice Name | view
Control | 0..1
Type | Extension(Media.view extension) (Extension Type: CodeableConcept)
24. DocumentReference.identifier
Note | This is a business identifier, not a resource identifier (see discussion)
Slicing | This element introduces a set of slices on `DocumentReference.identifier`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
26. DocumentReference.identifier:seriesInstanceUid
Slice Name | seriesInstanceUid
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1
28. DocumentReference.identifier:seriesInstanceUid.type
Control | 1..?
Pattern Value | `{ "coding" : [{ "system" : "https://hl7.cz/fhir/img/CodeSystem/codesystem-missing-dicom-terminology", "code" : "00080018" }] }`
30. DocumentReference.identifier:seriesInstanceUid.system
Control | 1..?
Pattern Value | `urn:ietf:rfc:3986`
32. DocumentReference.identifier:seriesInstanceUid.value
Control | 1..?
34. DocumentReference.identifier:seriesInstanceUid.assigner
Type | Reference(Organization (CZ core))
36. DocumentReference.identifier:sopClassInstanceUid
Slice Name | sopClassInstanceUid
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1
38. DocumentReference.identifier:sopClassInstanceUid.type
Control | 1..?
Pattern Value | `{ "coding" : [{ "system" : "http://dicom.nema.org/resources/ontology/DCM", "code" : "112002" }] }`
40. DocumentReference.identifier:sopClassInstanceUid.system
Control | 1..?
Pattern Value | `urn:ietf:rfc:3986`
42. DocumentReference.identifier:sopClassInstanceUid.value
Control | 1..?
44. DocumentReference.identifier:sopClassInstanceUid.assigner
Type | Reference(Organization (CZ core))
46. DocumentReference.category
Control | 1..?
Slicing | This element introduces a set of slices on `DocumentReference.category`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
48. DocumentReference.category:imkeyimages
Slice Name | imkeyimages
Control | 1..1
50. DocumentReference.category:imkeyimages.coding
Control | 1..?
Slicing | This element introduces a set of slices on `DocumentReference.category.coding`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
52. DocumentReference.category:imkeyimages.coding:keyimagecode
Slice Name | keyimagecode
Control | 1..1
Pattern Value | `{ "system" : "http://loinc.org", "code" : "55113-5", "display" : "Key images Document Radiology" }`
54. DocumentReference.subject
Control | 1..?
Type | Reference(Patient (CZ core), Patient: Animal (CZ))
56. DocumentReference.author
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core), Device: Performer/Observer (CZ core), Medical Device (CZ core), Patient (CZ core), Related Person (CZ core))
Slicing | This element introduces a set of slices on `DocumentReference.author`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
58. DocumentReference.author:performer
Slice Name | performer
Control | 0..*
Type | Reference(Practitioner Role (CZ core))
60. DocumentReference.authenticator
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core))
62. DocumentReference.custodian
Type | Reference(Organization (CZ core))
64. DocumentReference.content
Slicing | This element introduces a set of slices on `DocumentReference.content`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ extension.value
66. DocumentReference.content:thumbnail
Slice Name | thumbnail
Control | 0..1
68. DocumentReference.content:thumbnail.extension
Control | 1..?
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
70. DocumentReference.content:thumbnail.extension:thumbnail
Slice Name | thumbnail
Control | 1..1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
72. DocumentReference.content:thumbnail.extension:thumbnail.value[x]
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Pattern Value | `true`
74. DocumentReference.content:content
Slice Name | content
Control | 1..1
76. DocumentReference.content:content.extension
Control | 1..?
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
78. DocumentReference.content:content.extension:thumbnail
Slice Name | thumbnail
Control | 1..1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
80. DocumentReference.content:content.extension:thumbnail.value[x]
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Pattern Value | `false`
82. DocumentReference.content:content.attachment
84. DocumentReference.content:content.attachment.url
Control | 1..?
86. DocumentReference.context
88. DocumentReference.context.sourcePatientInfo
Type | Reference(Patient (CZ core), Patient: Animal (CZ))

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

0. DocumentReference
Definition | A reference to a document of any kind for any purpose. Provides metadata about the document so that the document can be discovered and managed. The scope of a document is any seralized object with a mime-type, so includes formal patient centric documents (CDA), cliical notes, scanned paper, and non-patient specific documents like policy text.
Short | A reference to a document
Comments | Usually, this is used for documents other than those defined by FHIR.
Control | 0..*
Is Modifier | false
Impose Profile | This profile also requires that the instance also conform this additional profile: DocumentReference: Key Image
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (`contained.contained.empty()`) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (`contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (`contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (`contained.meta.security.empty()`) dom-6: A resource should have narrative for robust management (`text.`div`.exists()`)
2. DocumentReference.id
Definition | The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Short | Logical id of this artifact
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.
Control | 0..1
Type | id
Is Modifier | false
Summary | true
4. DocumentReference.meta
Definition | The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Short | Metadata about the resource
Control | 0..1
Type | Meta
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
6. DocumentReference.implicitRules
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. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Short | A set of rules under which this content was created
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. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
8. DocumentReference.language
Definition | The base language in which the resource is written.
Short | Language of the resource content
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. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Control | 0..1
Binding | The codes SHOULD be taken from CommonLanguages (preferred to `http://hl7.org/fhir/ValueSet/languages|4.0.1` ) A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. DocumentReference.text
Definition | A human-readable narrative that contains a summary of the resource and can 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.
Short | Text summary of the resource, for human interpretation
Comments | Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
Control | 0..1
Type | Narrative
Is Modifier | false
Summary | false
Alternate Names | narrative, html, xhtml, display
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
12. DocumentReference.contained
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.
Short | Contained, inline Resources
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. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
Control | 0..*
Type | Resource
Is Modifier | false
Summary | false
Alternate Names | inline resources, anonymous resources, contained resources
14. DocumentReference.extension
Definition | An Extension
Short | Extension
Control | 1..*
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url value @ value
16. DocumentReference.extension:basedOn
Slice Name | basedOn
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.basedOn for use in FHIR R4) (Extension Type: Reference)
Is Modifier | false
Summary | false
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()`)
18. DocumentReference.extension:basedOn.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
20. DocumentReference.extension:basedOn.extension
Definition | An Extension
Short | Extension
Control | 0..0
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
22. DocumentReference.extension:basedOn.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/5.0/StructureDefinition/extension-DocumentReference.basedOn`
24. DocumentReference.extension:basedOn.value[x]
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1
Type | Reference(Appointment, AppointmentResponse, Care plan: Imaging Report (CZ), Claim, CommunicationRequest, Contract, CoverageEligibilityRequest, DeviceRequest, EnrollmentRequest, ImmunizationRecommendation, MedicationRequest, NutritionOrder, ServiceRequest, SupplyRequest, VisionPrescription, Service Request: Imaging Report (CZ))
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. DocumentReference.extension:basedOn/imorderaccession
Slice Name | basedOn/imorderaccession
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.basedOn for use in FHIR R4) (Extension Type: Reference)
Is Modifier | false
Summary | false
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()`)
28. DocumentReference.extension:basedOn/imorderaccession.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
30. DocumentReference.extension:basedOn/imorderaccession.extension
Definition | An Extension
Short | Extension
Control | 0..0
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
32. DocumentReference.extension:basedOn/imorderaccession.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/5.0/StructureDefinition/extension-DocumentReference.basedOn`
34. DocumentReference.extension:basedOn/imorderaccession.value[x]
Definition | A procedure that is fulfilled in whole or in part by the creation of this media.
Short | Procedure that caused this media to be created
Comments | `Media.basedOn` maps to R4 `Media.basedOn`. So is mapped as Equivalent.
Control | 0..1
Type | Reference(Service Request: Imaging Report (CZ))
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. DocumentReference.extension:basedOn/imorderaccession.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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
38. DocumentReference.extension:basedOn/imorderaccession.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.extension.value[x].extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
40. DocumentReference.extension:basedOn/imorderaccession.value[x].reference
Definition | A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.
Short | Literal reference, Relative, internal or absolute URL
Comments | Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
Control | 0..1 This element is affected by the following invariants: ref-1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
42. DocumentReference.extension:basedOn/imorderaccession.value[x].type
Definition | The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).
Short | Type the reference refers to (e.g. "Patient")
Comments | This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.
Control | 0..1
Binding | Unless not suitable, these codes SHALL be taken from ResourceType (extensible to `http://hl7.org/fhir/ValueSet/resource-types|4.0.1` ) Aa resource (or, for logical models, the URI of the logical model).
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
44. DocumentReference.extension:basedOn/imorderaccession.value[x].identifier
Definition | An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Short | Logical reference, when literal reference is not known
Comments | When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..1
Type | Identifier(Imaging Accession Number Identifier)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
46. DocumentReference.extension:basedOn/imorderaccession.value[x].display
Definition | Plain text narrative that identifies the resource in addition to the resource reference.
Short | Text alternative for the resource
Comments | This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
48. DocumentReference.extension:modality
Slice Name | modality
Definition | Imaging modality used. This may include both acquisition and non-acquisition modalities.
Short | Imaging modality used
Comments | `Media.modality` maps to R4 `Media.modality`. So is mapped as Equivalent.
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(Cross-version Extension for R5.DocumentReference.modality for use in FHIR R4) (Extension Type: CodeableConcept)
Is Modifier | false
Summary | false
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()`)
50. DocumentReference.extension:note
Slice Name | note
Definition | Additional notes that apply to this resource or element.
Short | Additional notes that apply to this resource or element.
Comments | This extension SHALL NOT be used if the resource already has standard 'note' element (or equivalent) of type Annotation on the same element
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Note) (Extension Type: Annotation)
Is Modifier | false
Summary | false
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()`)
52. DocumentReference.extension:view
Slice Name | view
Definition | This cross version extension includes the FHIR R4 version of the Media.view field which has at this point in time (April 18, 2025), not yet been included in the extension pack.
Short | Media.view extension
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Media.view extension) (Extension Type: CodeableConcept)
Is Modifier | false
Summary | false
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()`)
54. DocumentReference.modifierExtension
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 and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
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()`)
56. DocumentReference.masterIdentifier
Definition | Document identifier as assigned by the source of the document. This identifier is specific to this version of the document. This unique identifier may be used elsewhere to identify this version of the document.
Short | Master Version Specific Identifier
Comments | CDA Document Id extension and root.
Control | 0..1
Type | Identifier
Is Modifier | false
Summary | true
Requirements | The structure and format of this Id shall be consistent with the specification corresponding to the formatCode attribute. (e.g. for a DICOM standard document a 64-character numeric UID, for an HL7 CDA format a serialization of the CDA Document Id extension and root in the form "oid^extension", where OID is a 64 digits max, and the Id is a 16 UTF-8 char max. If the OID is coded without the extension then the '^' character shall not be included.).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
58. DocumentReference.identifier
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..*
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `DocumentReference.identifier`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
60. DocumentReference.identifier:seriesInstanceUid
Slice Name | seriesInstanceUid
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
62. DocumentReference.identifier:seriesInstanceUid.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
64. DocumentReference.identifier:seriesInstanceUid.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.identifier.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
66. DocumentReference.identifier:seriesInstanceUid.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
68. DocumentReference.identifier:seriesInstanceUid.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Description of identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 1..1
Binding | Unless not suitable, these codes SHALL be taken from Identifier Type Codes (extensible to `http://hl7.org/fhir/ValueSet/identifier-type|4.0.1` ) A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Pattern Value | `{ "coding" : [{ "system" : "https://hl7.cz/fhir/img/CodeSystem/codesystem-missing-dicom-terminology", "code" : "00080018" }] }`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
70. DocumentReference.identifier:seriesInstanceUid.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | The namespace for the identifier value
Comments | Identifier.system is always case sensitive.
Control | 1..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Pattern Value | `urn:ietf:rfc:3986`
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
72. DocumentReference.identifier:seriesInstanceUid.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | The value that is unique
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
74. DocumentReference.identifier:seriesInstanceUid.period
Definition | Time period during which identifier is/was valid for use.
Short | Time period when id is/was valid for use
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
76. DocumentReference.identifier:seriesInstanceUid.assigner
Definition | Organization that issued/manages the identifier.
Short | Organization that issued id (may be just text)
Comments | The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Control | 0..1
Type | Reference(Organization (CZ core))
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
78. DocumentReference.identifier:sopClassInstanceUid
Slice Name | sopClassInstanceUid
Definition | Other identifiers associated with the document, including version independent identifiers.
Short | Other identifiers for the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
80. DocumentReference.identifier:sopClassInstanceUid.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
82. DocumentReference.identifier:sopClassInstanceUid.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.identifier.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
84. DocumentReference.identifier:sopClassInstanceUid.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
86. DocumentReference.identifier:sopClassInstanceUid.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Description of identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 1..1
Binding | Unless not suitable, these codes SHALL be taken from Identifier Type Codes (extensible to `http://hl7.org/fhir/ValueSet/identifier-type|4.0.1` ) A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Pattern Value | `{ "coding" : [{ "system" : "http://dicom.nema.org/resources/ontology/DCM", "code" : "112002" }] }`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
88. DocumentReference.identifier:sopClassInstanceUid.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | The namespace for the identifier value
Comments | Identifier.system is always case sensitive.
Control | 1..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Pattern Value | `urn:ietf:rfc:3986`
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
90. DocumentReference.identifier:sopClassInstanceUid.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | The value that is unique
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
92. DocumentReference.identifier:sopClassInstanceUid.period
Definition | Time period during which identifier is/was valid for use.
Short | Time period when id is/was valid for use
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
94. DocumentReference.identifier:sopClassInstanceUid.assigner
Definition | Organization that issued/manages the identifier.
Short | Organization that issued id (may be just text)
Comments | The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Control | 0..1
Type | Reference(Organization (CZ core))
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
96. DocumentReference.status
Definition | The status of this document reference.
Short | current | superseded | entered-in-error
Comments | This is the status of the DocumentReference object, which might be independent from the docStatus element. This element is labeled as a modifier because the status contains the codes that mark the document or reference as not currently valid.
Control | 1..1
Binding | The codes SHALL be taken from DocumentReferenceStatus (required to `http://hl7.org/fhir/ValueSet/document-reference-status|4.0.1` ) The status of the document reference.
Type | code
Is Modifier | true because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
98. DocumentReference.docStatus
Definition | The status of the underlying document.
Short | preliminary | final | amended | entered-in-error
Comments | The document that is pointed to might be in various lifecycle states.
Control | 0..1
Binding | The codes SHALL be taken from CompositionStatus (required to `http://hl7.org/fhir/ValueSet/composition-status|4.0.1` ) Status of the underlying document.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
100. DocumentReference.type
Definition | Specifies the particular kind of document referenced (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the document referenced.
Short | Kind of document (LOINC if possible)
Comments | Key metadata element describing the document that describes he exact type of document. Helps humans to assess whether the document is of interest when viewing a list of documents.
Control | 0..1
Binding | The codes SHOULD be taken from DocumentTypeValueSet (preferred to `http://hl7.org/fhir/ValueSet/c80-doc-typecodes|4.0.1` ) Precise type of clinical document.
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
102. DocumentReference.category
Definition | A categorization for the type of document referenced - helps for indexing and searching. This may be implied by or derived from the code specified in the DocumentReference.type.
Short | Categorization of document
Comments | Key metadata element describing the the category or classification of the document. This is a broader perspective that groups similar documents based on how they would be used. This is a primary key used in searching.
Control | 1..*
Binding | For example codes, see DocumentClassValueSet (example to `http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1` ) High-level kind of a clinical document at a macro level.
Type | CodeableConcept
Is Modifier | false
Summary | true
Alternate Names | claxs
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `DocumentReference.category`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
104. DocumentReference.category:imkeyimages
Slice Name | imkeyimages
Definition | A categorization for the type of document referenced - helps for indexing and searching. This may be implied by or derived from the code specified in the DocumentReference.type.
Short | Categorization of document
Comments | Key metadata element describing the the category or classification of the document. This is a broader perspective that groups similar documents based on how they would be used. This is a primary key used in searching.
Control | 1..1
Binding | For example codes, see DocumentClassValueSet (example to `http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1` ) High-level kind of a clinical document at a macro level.
Type | CodeableConcept
Is Modifier | false
Summary | true
Alternate Names | claxs
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
106. DocumentReference.category:imkeyimages.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
108. DocumentReference.category:imkeyimages.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.category.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
110. DocumentReference.category:imkeyimages.coding
Definition | A reference to a code defined by a terminology system.
Short | Code defined by a terminology system
Comments | Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Control | 1..*
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `DocumentReference.category.coding`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ $this
112. DocumentReference.category:imkeyimages.coding:keyimagecode
Slice Name | keyimagecode
Definition | A reference to a code defined by a terminology system.
Short | Code defined by a terminology system
Comments | Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Control | 1..1
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Pattern Value | `{ "system" : "http://loinc.org", "code" : "55113-5", "display" : "Key images Document Radiology" }`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
114. DocumentReference.category:imkeyimages.text
Definition | A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Short | Plain text representation of the concept
Comments | Very often the text is the same as a displayName of one of the codings.
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
116. DocumentReference.subject
Definition | Who or what the document is about. The document can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of farm animals, or a set of patients that share a common exposure).
Short | Who/what is the subject of the document
Control | 1..1
Type | Reference(Patient (CZ core), Patient: Animal (CZ))
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
118. DocumentReference.date
Definition | When the document reference was created.
Short | When this document reference was created
Comments | Referencing/indexing time is used for tracking, organizing versions and searching.
Control | 0..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Alternate Names | indexed
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
120. DocumentReference.author
Definition | Identifies who is responsible for adding the information to the document.
Short | Who and/or what authored the document
Comments | Not necessarily who did the actual data entry (i.e. typist) or who was the source (informant).
Control | 0..*
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core), Device: Performer/Observer (CZ core), Medical Device (CZ core), Patient (CZ core), Related Person (CZ core))
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `DocumentReference.author`. The slices areUnordered and Open, and can be differentiated using the following discriminators: profile @ $this
122. DocumentReference.author:performer
Slice Name | performer
Definition | Identifies who is responsible for adding the information to the document.
Short | Who and/or what authored the document
Comments | Not necessarily who did the actual data entry (i.e. typist) or who was the source (informant).
Control | 0..*
Type | Reference(Practitioner Role (CZ core))
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
124. DocumentReference.authenticator
Definition | Which person or organization authenticates that this document is valid.
Short | Who/what authenticated the document
Comments | Represents a participant within the author institution who has legally authenticated or attested the document. Legal authentication implies that a document has been signed manually or electronically by the legal Authenticator.
Control | 0..1
Type | Reference(Practitioner (CZ core), Practitioner Role (CZ core), Organization (CZ core))
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
126. DocumentReference.custodian
Definition | Identifies the organization or group who is responsible for ongoing maintenance of and access to the document.
Short | Organization which maintains the document
Comments | Identifies the logical organization (software system, vendor, or department) to go to find the current version, where to report issues, etc. This is different from the physical location (URL, disk drive, or server) of the document, which is the technical location of the document, which host may be delegated to the management of some other organization.
Control | 0..1
Type | Reference(Organization (CZ core))
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
128. DocumentReference.relatesTo
Definition | Relationships that this document has with other document references that already exist.
Short | Relationships to other documents
Comments | This element is labeled as a modifier because documents that append to other documents are incomplete on their own.
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
130. DocumentReference.relatesTo.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
132. DocumentReference.relatesTo.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
134. DocumentReference.relatesTo.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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()`)
136. DocumentReference.relatesTo.code
Definition | The type of relationship that this document has with anther document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType (required to `http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1` ) The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
138. DocumentReference.relatesTo.target
Definition | The target document of this relationship.
Short | Target of the relationship
Control | 1..1
Type | Reference(DocumentReference)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
140. DocumentReference.description
Definition | Human-readable description of the source document.
Short | Human-readable description
Comments | What the document is about, a terse summary of the document.
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Helps humans to assess whether the document is of interest.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
142. DocumentReference.securityLabel
Definition | A set of Security-Tag codes specifying the level of privacy/security of the Document. Note that DocumentReference.meta.security contains the security labels of the "reference" to the document, while DocumentReference.securityLabel contains a snapshot of the security labels on the document the reference refers to.
Short | Document security-tags
Comments | The confidentiality codes can carry multiple vocabulary items. HL7 has developed an understanding of security and privacy tags that might be desirable in a Document Sharing environment, called HL7 Healthcare Privacy and Security Classification System (HCS). The following specification is recommended but not mandated, as the vocabulary bindings are an administrative domain responsibility. The use of this method is up to the policy domain such as the XDS Affinity Domain or other Trust Domain where all parties including sender and recipients are trusted to appropriately tag and enforce. In the HL7 Healthcare Privacy and Security Classification (HCS) there are code systems specific to Confidentiality, Sensitivity, Integrity, and Handling Caveats. Some values would come from a local vocabulary as they are related to workflow roles and special projects.
Control | 0..*
Binding | Unless not suitable, these codes SHALL be taken from All Security Labels (extensible to `http://hl7.org/fhir/ValueSet/security-labels|4.0.1` ) Security Labels from the Healthcare Privacy and Security Classification System.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Use of the Health Care Privacy/Security Classification (HCS) system of security-tag use is recommended.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
144. DocumentReference.content
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 1..*
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `DocumentReference.content`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ extension.value
146. DocumentReference.content.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
148. DocumentReference.content.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
150. DocumentReference.content.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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()`)
152. DocumentReference.content.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
154. DocumentReference.content.format
Definition | An identifier of the document encoding, structure, and template that the document conforms to beyond the base format indicated in the mimeType.
Short | Format/content rules for the document
Comments | Note that while IHE mostly issues URNs for format types, not all documents can be identified by a URI.
Control | 0..1
Binding | The codes SHOULD be taken from DocumentReferenceFormatCodeSet (preferred to `http://hl7.org/fhir/ValueSet/formatcodes|4.0.1` ) Document Format Codes.
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
156. DocumentReference.content:thumbnail
Slice Name | thumbnail
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 0..1
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
158. DocumentReference.content:thumbnail.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
160. DocumentReference.content:thumbnail.extension
Definition | An Extension
Short | Extension
Control | 1..*
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
162. DocumentReference.content:thumbnail.extension:thumbnail
Slice Name | thumbnail
Definition | True or False indicating whether the content is a thumbnail.
Short | Thumbnail state
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
Is Modifier | false
Summary | false
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()`)
164. DocumentReference.content:thumbnail.extension:thumbnail.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
166. DocumentReference.content:thumbnail.extension:thumbnail.extension
Definition | An Extension
Short | Extension
Control | 0..0
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.content.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
168. DocumentReference.content:thumbnail.extension:thumbnail.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/StructureDefinition/documentreference-thumbnail`
170. DocumentReference.content:thumbnail.extension:thumbnail.value[x]
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Value of extension
Control | 1..1
Type | boolean
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Pattern Value | `true`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
172. DocumentReference.content:thumbnail.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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()`)
174. DocumentReference.content:thumbnail.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
176. DocumentReference.content:thumbnail.format
Definition | An identifier of the document encoding, structure, and template that the document conforms to beyond the base format indicated in the mimeType.
Short | Format/content rules for the document
Comments | Note that while IHE mostly issues URNs for format types, not all documents can be identified by a URI.
Control | 0..1
Binding | The codes SHOULD be taken from DocumentReferenceFormatCodeSet (preferred to `http://hl7.org/fhir/ValueSet/formatcodes|4.0.1` ) Document Format Codes.
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
178. DocumentReference.content:content
Slice Name | content
Definition | The document and format referenced. There may be multiple content element repetitions, each with a different format.
Short | Document referenced
Control | 1..1
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
180. DocumentReference.content:content.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
182. DocumentReference.content:content.extension
Definition | An Extension
Short | Extension
Control | 1..*
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.content.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
184. DocumentReference.content:content.extension:thumbnail
Slice Name | thumbnail
Definition | True or False indicating whether the content is a thumbnail.
Short | Thumbnail state
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(DocumentReference Thumbnail) (Extension Type: boolean)
Is Modifier | false
Summary | false
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()`)
186. DocumentReference.content:content.extension:thumbnail.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
188. DocumentReference.content:content.extension:thumbnail.extension
Definition | An Extension
Short | Extension
Control | 0..0
Type | Extension
Is Modifier | false
Summary | false
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.content.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
190. DocumentReference.content:content.extension:thumbnail.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies 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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://hl7.org/fhir/StructureDefinition/documentreference-thumbnail`
192. DocumentReference.content:content.extension:thumbnail.value[x]
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | Value of extension
Control | 1..1
Type | boolean
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Pattern Value | `false`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
194. DocumentReference.content:content.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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()`)
196. DocumentReference.content:content.attachment
Definition | The document or URL of the document along with critical metadata to prove content has integrity.
Short | Where to access the document
Control | 1..1
Type | Attachment
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
198. DocumentReference.content:content.attachment.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
200. DocumentReference.content:content.attachment.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
Slicing | This element introduces a set of slices on `DocumentReference.content.attachment.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
202. DocumentReference.content:content.attachment.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.
Short | Mime type of the content, with charset etc.
Control | 0..1
Binding | The codes SHALL be taken from Mime Types (required to `http://hl7.org/fhir/ValueSet/mimetypes|4.0.1` ) The mime type of an attachment. Any valid mime type is allowed.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Processors of the data need to be able to know how to interpret the data.
Example | General: text/plain; charset=UTF-8, image/png
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
204. DocumentReference.content:content.attachment.language
Definition | The human language of the content. The value can be any valid value according to BCP 47.
Short | Human language of the content (BCP-47)
Control | 0..1
Binding | The codes SHOULD be taken from CommonLanguages (preferred to `http://hl7.org/fhir/ValueSet/languages|4.0.1` ) A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Users need to be able to choose between the languages in a set of attachments.
Example | General: en-AU
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
206. DocumentReference.content:content.attachment.data
Definition | The actual data of the attachment - a sequence of bytes, base64 encoded.
Short | Data inline, base64ed
Comments | The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.
Control | 0..1
Type | base64Binary
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | The data needs to able to be transmitted inline.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
208. DocumentReference.content:content.attachment.url
Definition | A location where the data can be accessed.
Short | Uri 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.
Control | 1..1
Type | url
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | The data needs to be transmitted by reference.
Example | General: http://www.acme.com/logo-small.png
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
210. DocumentReference.content:content.attachment.size
Definition | The number of bytes of data that make up this attachment (before base64 encoding, if that is done).
Short | Number 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.
Control | 0..1
Type | unsignedInt
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Representing the size allows applications to determine whether they should fetch the content automatically in advance, or refuse to fetch it at all.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
212. DocumentReference.content:content.attachment.hash
Definition | The calculated hash of the data using SHA-1. Represented using base64.
Short | Hash 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.
Control | 0..1
Type | base64Binary
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
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).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
214. DocumentReference.content:content.attachment.title
Definition | A label or set of text to display in place of the data.
Short | Label to display in place of the data
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
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 | General: Official Corporate Logo
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
216. DocumentReference.content:content.attachment.creation
Definition | The date that the attachment was first created.
Short | Date attachment was first created
Control | 0..1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | This is often tracked as an integrity issue for use of the attachment.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
218. DocumentReference.content:content.format
Definition | An identifier of the document encoding, structure, and template that the document conforms to beyond the base format indicated in the mimeType.
Short | Format/content rules for the document
Comments | Note that while IHE mostly issues URNs for format types, not all documents can be identified by a URI.
Control | 0..1
Binding | The codes SHOULD be taken from DocumentReferenceFormatCodeSet (preferred to `http://hl7.org/fhir/ValueSet/formatcodes|4.0.1` ) Document Format Codes.
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
220. DocumentReference.context
Definition | The clinical context in which the document was prepared.
Short | Clinical context of document
Comments | These values are primarily added to help with searching for interesting/relevant documents.
Control | 0..1
Type | BackboneElement
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
222. DocumentReference.context.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
224. DocumentReference.context.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
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()`)
226. DocumentReference.context.modifierExtension
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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
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()`)
228. DocumentReference.context.encounter
Definition | Describes the clinical encounter or type of care that the document content is associated with.
Short | Context of the document content
Control | 0..*
Type | Reference(Encounter, EpisodeOfCare)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
230. DocumentReference.context.event
Definition | This list of codes represents the main clinical acts, such as a colonoscopy or an appendectomy, being documented. In some cases, the event is inherent in the type Code, such as a "History and Physical Report" in which the procedure being documented is necessarily a "History and Physical" act.
Short | Main clinical acts documented
Comments | An event can further specialize the act inherent in the type, such as where it is simply "Procedure Report" and the procedure was a "colonoscopy". If one or more event codes are included, they shall not conflict with the values inherent in the class or type elements as such a conflict would create an ambiguous situation.
Control | 0..*
Binding | For example codes, see v3 Code System ActCode (example to `http://terminology.hl7.org/ValueSet/v3-ActCode` ) This list of codes represents the main clinical acts being documented.
Type | CodeableConcept
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
232. DocumentReference.context.period
Definition | The time period over which the service that is described by the document was provided.
Short | Time of service that is being documented
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
234. DocumentReference.context.facilityType
Definition | The kind of facility where the patient was seen.
Short | Kind of facility where patient was seen
Control | 0..1
Binding | For example codes, see FacilityTypeCodeValueSet (example to `http://hl7.org/fhir/ValueSet/c80-facilitycodes|4.0.1` ) XDS Facility Type.
Type | CodeableConcept
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
236. DocumentReference.context.practiceSetting
Definition | This property may convey specifics about the practice setting where the content was created, often reflecting the clinical specialty.
Short | Additional details about where the content was created (e.g. clinical specialty)
Comments | This element should be based on a coarse classification system for the class of specialty practice. Recommend the use of the classification system for Practice Setting, such as that described by the Subject Matter Domain in LOINC.
Control | 0..1
Binding | For example codes, see PracticeSettingCodeValueSet (example to `http://hl7.org/fhir/ValueSet/c80-practice-codes|4.0.1` ) Additional details about where the content was created (e.g. clinical specialty).
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | This is an important piece of metadata that providers often rely upon to quickly sort and/or filter out to find specific content.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
238. DocumentReference.context.sourcePatientInfo
Definition | The Patient Information as known when the document was published. May be a reference to a version specific, or contained.
Short | Patient demographics from source
Control | 0..1
Type | Reference(Patient (CZ core), Patient: Animal (CZ))
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
240. DocumentReference.context.related
Definition | Related identifiers or resources associated with the DocumentReference.
Short | Related identifiers or resources
Comments | May be identifiers or resources that caused the DocumentReference or referenced Document to be created.
Control | 0..*
Type | Reference(Resource)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)