Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources 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 dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated dom-5: If a resource is contained in another resource, it SHALL NOT have a security label dom-6: A resource should have narrative for robust management
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created ele-1: All FHIR elements must have a @value or children
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
identifier	SΣ	0..1	Identifier	Unique identifier ele-1: All FHIR elements must have a @value or children
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . ele-1: All FHIR elements must have a @value or children
value	SΣ	0..1	string	The value that is unique ele-1: All FHIR elements must have a @value or children Example General: 123456
status	?!SΣ	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown Binding: EventStatus (required): The status of the communication. ele-1: All FHIR elements must have a @value or children
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc. ele-1: All FHIR elements must have a @value or children
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message ele-1: All FHIR elements must have a @value or children
display	Σ	0..1	string	External name of patient ele-1: All FHIR elements must have a @value or children
sent	S	1..1	dateTime	When sent ele-1: All FHIR elements must have a @value or children
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender ele-1: All FHIR elements must have a @value or children
payload	S	1..1	BackboneElement	Message payload ele-1: All FHIR elements must have a @value or children
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
Slices for content[x]		1..1		Message part content Slice: Unordered, Open by type:$this ele-1: All FHIR elements must have a @value or children
contentString			string
contentAttachment			Attachment
contentReference			Reference(Resource)
content[x]:contentAttachment		0..1	Attachment	Message part content ele-1: All FHIR elements must have a @value or children
contentType	SΣ	1..1	code	Mime type of the content, with charset etc. Binding: Mime Types (required): The mime type of an attachment. Any valid mime type is allowed. ele-1: All FHIR elements must have a @value or children Example General: text/plain; charset=UTF-8, image/png
data	S	1..1	base64Binary	Data inline, base64ed ele-1: All FHIR elements must have a @value or children
title	SΣ	1..1	string	Label to display in place of the data ele-1: All FHIR elements must have a @value or children Example General: Official Corporate Logo
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Communication.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Communication.status	required	EventStatus http://hl7.org/fhir/ValueSet/event-status|4.0.1 from the FHIR Standard
Communication.category	example	CommunicationCategory http://hl7.org/fhir/ValueSet/communication-category from the FHIR Standard
Communication.payload.content[x]:contentAttachment.contentType	required	Mime Types (a valid code from urn:ietf:bcp:13) http://hl7.org/fhir/ValueSet/mimetypes|4.0.1 from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
dom-2	error	Communication	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Communication	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	error	Communication	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	error	Communication	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Communication	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
extension		0..0
identifier	S	0..1	Identifier	Unique identifier
value	S	0..1	string	The value that is unique
instantiatesCanonical		0..0
basedOn		0..0
partOf		0..0
inResponseTo		0..0
status	S	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown
statusReason		0..0
category	S	1..1	CodeableConcept	Message category
priority		0..0
medium		0..0
subject	S	1..1	Reference(Patient | Group)	Focus of message
display		0..1	string	External name of patient
topic		0..0
about		0..0
encounter		0..0
sent	S	1..1	dateTime	When sent
received		0..0
recipient		0..0
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender
reasonCode		0..0
reasonReference		0..0
payload	S	1..1	BackboneElement	Message payload
Slices for content[x]		1..1	string, Attachment, Reference(Resource)	Message part content Slice: Unordered, Open by type:$this
content[x]:contentAttachment		0..1	Attachment	Message part content
contentType	S	1..1	code	Mime type of the content, with charset etc.
data	S	1..1	base64Binary	Data inline, base64ed
title	S	1..1	string	Label to display in place of the data
note		0..0
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	SΣ	0..1	Identifier	Unique identifier
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
type	Σ	0..1	CodeableConcept	Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
system	Σ	0..1	uri	The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	0..1	string	The value that is unique Example General: 123456
period	Σ	0..1	Period	Time period when id is/was valid for use
assigner	Σ	0..1	Reference(Organization)	Organization that issued id (may be just text)
instantiatesUri	Σ	0..*	uri	Instantiates external protocol or definition
status	?!SΣ	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown Binding: EventStatus (required): The status of the communication.
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc.
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
reference	ΣC	0..1	string	Literal reference, Relative, internal or absolute URL
type	Σ	0..1	uri	Type the reference refers to (e.g. "Patient") Binding: ResourceType (extensible): Aa resource (or, for logical models, the URI of the logical model).
identifier	Σ	0..1	Identifier	Logical reference, when literal reference is not known
display	Σ	0..1	string	External name of patient
sent	S	1..1	dateTime	When sent
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender
payload	S	1..1	BackboneElement	Message payload
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
Slices for content[x]		1..1		Message part content Slice: Unordered, Open by type:$this
contentString			string
contentAttachment			Attachment
contentReference			Reference(Resource)
content[x]:contentAttachment		0..1	Attachment	Message part content
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
contentType	SΣ	1..1	code	Mime type of the content, with charset etc. Binding: Mime Types (required): The mime type of an attachment. Any valid mime type is allowed. Example General: text/plain; charset=UTF-8, image/png
language	Σ	0..1	code	Human language of the content (BCP-47) Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding Example General: en-AU
data	S	1..1	base64Binary	Data inline, base64ed
url	Σ	0..1	url	Uri where the data can be found Example General: http://www.acme.com/logo-small.png
size	Σ	0..1	unsignedInt	Number of bytes of content (if url provided)
hash	Σ	0..1	base64Binary	Hash of the data (sha-1, base64ed)
title	SΣ	1..1	string	Label to display in place of the data Example General: Official Corporate Logo
creation	Σ	0..1	dateTime	Date attachment was first created
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Communication.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages from the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
Communication.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Communication.identifier.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Communication.status	required	EventStatus http://hl7.org/fhir/ValueSet/event-status|4.0.1 from the FHIR Standard
Communication.category	example	CommunicationCategory http://hl7.org/fhir/ValueSet/communication-category from the FHIR Standard
Communication.subject.type	extensible	ResourceType http://hl7.org/fhir/ValueSet/resource-types from the FHIR Standard
Communication.payload.content[x]:contentAttachment.contentType	required	Mime Types (a valid code from urn:ietf:bcp:13) http://hl7.org/fhir/ValueSet/mimetypes|4.0.1 from the FHIR Standard
Communication.payload.content[x]:contentAttachment.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages from the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding

Constraints

Id	Grade	Path(s)	Details	Requirements
dom-2	error	Communication	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Communication	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	error	Communication	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	error	Communication	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Communication	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

Summary

Mandatory: 5 elements(3 nested mandatory elements)
Must-Support: 11 elements
Prohibited: 16 elements

Slices

This structure defines the following Slices:

• The element 1 is sliced based on the value of Communication.payload.content[x]

Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources 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 dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated dom-5: If a resource is contained in another resource, it SHALL NOT have a security label dom-6: A resource should have narrative for robust management
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created ele-1: All FHIR elements must have a @value or children
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
identifier	SΣ	0..1	Identifier	Unique identifier ele-1: All FHIR elements must have a @value or children
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . ele-1: All FHIR elements must have a @value or children
value	SΣ	0..1	string	The value that is unique ele-1: All FHIR elements must have a @value or children Example General: 123456
status	?!SΣ	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown Binding: EventStatus (required): The status of the communication. ele-1: All FHIR elements must have a @value or children
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc. ele-1: All FHIR elements must have a @value or children
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message ele-1: All FHIR elements must have a @value or children
display	Σ	0..1	string	External name of patient ele-1: All FHIR elements must have a @value or children
sent	S	1..1	dateTime	When sent ele-1: All FHIR elements must have a @value or children
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender ele-1: All FHIR elements must have a @value or children
payload	S	1..1	BackboneElement	Message payload ele-1: All FHIR elements must have a @value or children
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
Slices for content[x]		1..1		Message part content Slice: Unordered, Open by type:$this ele-1: All FHIR elements must have a @value or children
contentString			string
contentAttachment			Attachment
contentReference			Reference(Resource)
content[x]:contentAttachment		0..1	Attachment	Message part content ele-1: All FHIR elements must have a @value or children
contentType	SΣ	1..1	code	Mime type of the content, with charset etc. Binding: Mime Types (required): The mime type of an attachment. Any valid mime type is allowed. ele-1: All FHIR elements must have a @value or children Example General: text/plain; charset=UTF-8, image/png
data	S	1..1	base64Binary	Data inline, base64ed ele-1: All FHIR elements must have a @value or children
title	SΣ	1..1	string	Label to display in place of the data ele-1: All FHIR elements must have a @value or children Example General: Official Corporate Logo
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Communication.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Communication.status	required	EventStatus http://hl7.org/fhir/ValueSet/event-status|4.0.1 from the FHIR Standard
Communication.category	example	CommunicationCategory http://hl7.org/fhir/ValueSet/communication-category from the FHIR Standard
Communication.payload.content[x]:contentAttachment.contentType	required	Mime Types (a valid code from urn:ietf:bcp:13) http://hl7.org/fhir/ValueSet/mimetypes|4.0.1 from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
dom-2	error	Communication	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Communication	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	error	Communication	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	error	Communication	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Communication	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
extension		0..0
identifier	S	0..1	Identifier	Unique identifier
value	S	0..1	string	The value that is unique
instantiatesCanonical		0..0
basedOn		0..0
partOf		0..0
inResponseTo		0..0
status	S	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown
statusReason		0..0
category	S	1..1	CodeableConcept	Message category
priority		0..0
medium		0..0
subject	S	1..1	Reference(Patient | Group)	Focus of message
display		0..1	string	External name of patient
topic		0..0
about		0..0
encounter		0..0
sent	S	1..1	dateTime	When sent
received		0..0
recipient		0..0
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender
reasonCode		0..0
reasonReference		0..0
payload	S	1..1	BackboneElement	Message payload
Slices for content[x]		1..1	string, Attachment, Reference(Resource)	Message part content Slice: Unordered, Open by type:$this
content[x]:contentAttachment		0..1	Attachment	Message part content
contentType	S	1..1	code	Mime type of the content, with charset etc.
data	S	1..1	base64Binary	Data inline, base64ed
title	S	1..1	string	Label to display in place of the data
note		0..0
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	SΣ	0..1	Identifier	Unique identifier
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
type	Σ	0..1	CodeableConcept	Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.
system	Σ	0..1	uri	The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	0..1	string	The value that is unique Example General: 123456
period	Σ	0..1	Period	Time period when id is/was valid for use
assigner	Σ	0..1	Reference(Organization)	Organization that issued id (may be just text)
instantiatesUri	Σ	0..*	uri	Instantiates external protocol or definition
status	?!SΣ	1..1	code	preparation | in-progress | not-done | on-hold | stopped | completed | entered-in-error | unknown Binding: EventStatus (required): The status of the communication.
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc.
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
reference	ΣC	0..1	string	Literal reference, Relative, internal or absolute URL
type	Σ	0..1	uri	Type the reference refers to (e.g. "Patient") Binding: ResourceType (extensible): Aa resource (or, for logical models, the URI of the logical model).
identifier	Σ	0..1	Identifier	Logical reference, when literal reference is not known
display	Σ	0..1	string	External name of patient
sent	S	1..1	dateTime	When sent
sender	S	1..1	Reference(Device | Organization | Patient | Practitioner | PractitionerRole | RelatedPerson | HealthcareService)	Message sender
payload	S	1..1	BackboneElement	Message payload
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
Slices for content[x]		1..1		Message part content Slice: Unordered, Open by type:$this
contentString			string
contentAttachment			Attachment
contentReference			Reference(Resource)
content[x]:contentAttachment		0..1	Attachment	Message part content
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
contentType	SΣ	1..1	code	Mime type of the content, with charset etc. Binding: Mime Types (required): The mime type of an attachment. Any valid mime type is allowed. Example General: text/plain; charset=UTF-8, image/png
language	Σ	0..1	code	Human language of the content (BCP-47) Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding Example General: en-AU
data	S	1..1	base64Binary	Data inline, base64ed
url	Σ	0..1	url	Uri where the data can be found Example General: http://www.acme.com/logo-small.png
size	Σ	0..1	unsignedInt	Number of bytes of content (if url provided)
hash	Σ	0..1	base64Binary	Hash of the data (sha-1, base64ed)
title	SΣ	1..1	string	Label to display in place of the data Example General: Official Corporate Logo
creation	Σ	0..1	dateTime	Date attachment was first created
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Communication.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages from the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
Communication.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Communication.identifier.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Communication.status	required	EventStatus http://hl7.org/fhir/ValueSet/event-status|4.0.1 from the FHIR Standard
Communication.category	example	CommunicationCategory http://hl7.org/fhir/ValueSet/communication-category from the FHIR Standard
Communication.subject.type	extensible	ResourceType http://hl7.org/fhir/ValueSet/resource-types from the FHIR Standard
Communication.payload.content[x]:contentAttachment.contentType	required	Mime Types (a valid code from urn:ietf:bcp:13) http://hl7.org/fhir/ValueSet/mimetypes|4.0.1 from the FHIR Standard
Communication.payload.content[x]:contentAttachment.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages from the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding

Constraints

Id	Grade	Path(s)	Details	Requirements
dom-2	error	Communication	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	Communication	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	error	Communication	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	error	Communication	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	Communication	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

Summary

Mandatory: 5 elements(3 nested mandatory elements)
Must-Support: 11 elements
Prohibited: 16 elements

Slices

This structure defines the following Slices:

• The element 1 is sliced based on the value of Communication.payload.content[x]