Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	SΣ	0..1	Identifier	Unique identifier
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
value	SΣ	0..1	string	The value that is unique 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.
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc.
coding	SΣ	1..1	Coding	Code defined by a terminology system
system	SΣ	1..1	uri	Identity of the terminology system
code	SΣ	1..1	code	Symbol in syntax defined by the system
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message
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
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
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
data	S	1..1	base64Binary	Data inline, base64ed
title	SΣ	1..1	string	Label to display in place of the data 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    Filter: Bindings Constraints Obligations
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
coding	S	1..1	Coding	Code defined by a terminology system
system	S	1..1	uri	Identity of the terminology system
code	S	1..1	code	Symbol in syntax defined by the system
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    Filter: Bindings Constraints Obligations
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
coding	SΣ	1..1	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	SΣ	1..1	uri	Identity of the terminology system
version	Σ	0..1	string	Version of the system - if relevant
code	SΣ	1..1	code	Symbol in syntax defined by the system
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
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: 8 elements(3 nested mandatory elements)
Must-Support: 14 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    Filter: Bindings Constraints Obligations
Communication		0..*	Communication	A record of information transmitted from a sender to a receiver
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	SΣ	0..1	Identifier	Unique identifier
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
value	SΣ	0..1	string	The value that is unique 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.
category	S	1..1	CodeableConcept	Message category Binding: CommunicationCategory (example): Codes for general categories of communications such as alerts, instructions, etc.
coding	SΣ	1..1	Coding	Code defined by a terminology system
system	SΣ	1..1	uri	Identity of the terminology system
code	SΣ	1..1	code	Symbol in syntax defined by the system
subject	SΣ	1..1	Reference(Patient | Group)	Focus of message
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
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
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
data	S	1..1	base64Binary	Data inline, base64ed
title	SΣ	1..1	string	Label to display in place of the data 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    Filter: Bindings Constraints Obligations
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
coding	S	1..1	Coding	Code defined by a terminology system
system	S	1..1	uri	Identity of the terminology system
code	S	1..1	code	Symbol in syntax defined by the system
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    Filter: Bindings Constraints Obligations
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
coding	SΣ	1..1	Coding	Code defined by a terminology system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	SΣ	1..1	uri	Identity of the terminology system
version	Σ	0..1	string	Version of the system - if relevant
code	SΣ	1..1	code	Symbol in syntax defined by the system
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
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: 8 elements(3 nested mandatory elements)
Must-Support: 14 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]