Name	Flags	Card.	Type	Description & Constraints
Encounter			USCoreEncounterProfile
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
Slices for identifier		0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:dicomTreatmentSessionUid	S	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
system		1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
serviceType		1..1	CodeableConcept	Specific type of service Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
location
location		1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Encounter		0..*	USCoreEncounterProfile	An interaction during which services are provided to the patient
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
Slices for identifier	SΣ	0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:All Slices				Content/Rules for all slices
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
system	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	1..1	string	(USCDI) The value that is unique Example General: 123456
identifier:dicomTreatmentSessionUid	SΣ	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
system	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
value	SΣ	1..1	string	(USCDI) The value that is unique Example General: 123456
status	?!SΣ	1..1	code	(USCDI) planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
class	SΣ	1..1	Coding	(USCDI) Classification of patient encounter Binding: ActEncounterCode (extensible): Classification of the encounter.
type	SΣ	1..*	CodeableConcept	(USCDI) Specific type of encounter Binding: US Core Encounter Type (extensible): Valueset to describe the Encounter Type
serviceType	Σ	1..1	CodeableConcept	Specific type of service Binding: ServiceType (example): Broad categorization of the service that is to be provided. Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) The patient or group present at the encounter
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
participant	SΣ	0..*	BackboneElement	(USCDI) List of participants involved in the encounter
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type	SΣ	0..*	CodeableConcept	(USCDI) Role of participant in encounter Binding: ParticipantType (extensible): Role of participant in encounter.
period	S	0..1	Period	(USCDI) Period of time during the encounter that the participant participated
individual	SΣ	0..1	Reference(US Core Practitioner Profile)	(USCDI) Persons involved in the encounter other than the patient
period	S	0..1	Period	(USCDI) The start and end time of the encounter
reasonCode	SΣ	0..*	CodeableConcept	(USCDI) Coded reason the encounter takes place Binding: EncounterReasonCodes (preferred): Reason why the encounter takes place.
reasonReference	SΣ	0..*	Reference(US Core Condition Problems and Health Concerns Profile | US Core Condition Encounter Diagnosis Profile)	(USCDI) Reason the encounter takes place (reference)
hospitalization	S	0..1	BackboneElement	(USCDI) Details about the admission to a healthcare service
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
dischargeDisposition	S	0..1	CodeableConcept	(USCDI) Category or kind of location after discharge Binding: US Core Discharge Disposition (preferred): National Uniform Billing Committee, manual UB-04, UB form locator 17
location	S	0..*	BackboneElement	(USCDI) List of locations where the patient has been
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
location	S	1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
serviceProvider	S	0..1	Reference(US Core Organization Profile)	(USCDI) The organization (facility) responsible for this encounter
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Encounter.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.type	extensible	USCoreEncounterType http://hl7.org/fhir/us/core/ValueSet/us-core-encounter-type
Encounter.serviceType	example	Pattern: SNOMED-CT Code 1287742003("Radiotherapy (procedure)") http://hl7.org/fhir/ValueSet/service-type from the FHIR Standard
Encounter.participant.type	extensible	ParticipantType http://hl7.org/fhir/ValueSet/encounter-participant-type from the FHIR Standard
Encounter.reasonCode	preferred	EncounterReasonCodes http://hl7.org/fhir/ValueSet/encounter-reason from the FHIR Standard
Encounter.hospitalization.dischargeDisposition	preferred	USCoreDischargeDisposition (a valid code from http://www.nubc.org/patient-discharge) http://hl7.org/fhir/us/core/ValueSet/us-core-discharge-disposition

Name	Flags	Card.	Type	Description & Constraints
Encounter		0..*	USCoreEncounterProfile	An interaction during which services are provided to the patient
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
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
Slices for identifier	SΣ	0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:All Slices				Content/Rules for all slices
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	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	1..1	string	(USCDI) 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)
identifier:dicomTreatmentSessionUid	SΣ	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
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	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
value	SΣ	1..1	string	(USCDI) 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)
status	?!SΣ	1..1	code	(USCDI) planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
statusHistory		0..*	BackboneElement	List of past encounter statuses
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
status		1..1	code	planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
period		1..1	Period	The time that the episode was in the specified status
class	SΣ	1..1	Coding	(USCDI) Classification of patient encounter Binding: ActEncounterCode (extensible): Classification of the encounter.
classHistory		0..*	BackboneElement	List of past encounter classes
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
class		1..1	Coding	inpatient | outpatient | ambulatory | emergency + Binding: ActEncounterCode (extensible): Classification of the encounter.
period		1..1	Period	The time that the episode was in the specified class
type	SΣ	1..*	CodeableConcept	(USCDI) Specific type of encounter Binding: US Core Encounter Type (extensible): Valueset to describe the Encounter Type
serviceType	Σ	1..1	CodeableConcept	Specific type of service Binding: ServiceType (example): Broad categorization of the service that is to be provided. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
priority		0..1	CodeableConcept	Indicates the urgency of the encounter Binding: ActPriority (example): Indicates the urgency of the encounter.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) The patient or group present at the encounter
episodeOfCare	Σ	0..*	Reference(EpisodeOfCare)	Episode(s) of care that this encounter should be recorded against
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
participant	SΣ	0..*	BackboneElement	(USCDI) List of participants involved in the encounter
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
type	SΣ	0..*	CodeableConcept	(USCDI) Role of participant in encounter Binding: ParticipantType (extensible): Role of participant in encounter.
period	S	0..1	Period	(USCDI) Period of time during the encounter that the participant participated
individual	SΣ	0..1	Reference(US Core Practitioner Profile S | US Core PractitionerRole Profile | US Core RelatedPerson Profile)	(USCDI) Persons involved in the encounter other than the patient
appointment	Σ	0..*	Reference(Appointment)	The appointment that scheduled this encounter
period	S	0..1	Period	(USCDI) The start and end time of the encounter
length		0..1	Duration	Quantity of time the encounter lasted (less time absent)
reasonCode	SΣ	0..*	CodeableConcept	(USCDI) Coded reason the encounter takes place Binding: EncounterReasonCodes (preferred): Reason why the encounter takes place.
reasonReference	SΣ	0..*	Reference(US Core Condition Problems and Health Concerns Profile S | US Core Condition Encounter Diagnosis Profile S | US Core Procedure Profile | Observation | ImmunizationRecommendation)	(USCDI) Reason the encounter takes place (reference)
diagnosis	Σ	0..*	BackboneElement	The list of diagnosis relevant to this encounter
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
condition	Σ	1..1	Reference(Condition | Procedure)	The diagnosis or procedure relevant to the encounter
use		0..1	CodeableConcept	Role that this diagnosis has within the encounter (e.g. admission, billing, discharge …) Binding: DiagnosisRole (preferred): The type of diagnosis this condition represents.
rank		0..1	positiveInt	Ranking of the diagnosis (for each role type)
account		0..*	Reference(Account)	The set of accounts that may be used for billing for this Encounter
hospitalization	S	0..1	BackboneElement	(USCDI) Details about the admission to a healthcare service
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
preAdmissionIdentifier		0..1	Identifier	Pre-admission identifier
origin		0..1	Reference(Location | Organization)	The location/organization from which the patient came before admission
admitSource		0..1	CodeableConcept	From where patient was admitted (physician referral, transfer) Binding: AdmitSource (preferred): From where the patient was admitted.
reAdmission		0..1	CodeableConcept	The type of hospital re-admission that has occurred (if any). If the value is absent, then this is not identified as a readmission Binding: hl7VS-re-admissionIndicator (example): The reason for re-admission of this hospitalization encounter.
dietPreference		0..*	CodeableConcept	Diet preferences reported by the patient Binding: Diet (example): Medical, cultural or ethical food preferences to help with catering requirements.
specialCourtesy		0..*	CodeableConcept	Special courtesies (VIP, board member) Binding: SpecialCourtesy (preferred): Special courtesies.
specialArrangement		0..*	CodeableConcept	Wheelchair, translator, stretcher, etc. Binding: SpecialArrangements (preferred): Special arrangements.
destination		0..1	Reference(Location | Organization)	Location/organization to which the patient is discharged
dischargeDisposition	S	0..1	CodeableConcept	(USCDI) Category or kind of location after discharge Binding: US Core Discharge Disposition (preferred): National Uniform Billing Committee, manual UB-04, UB form locator 17
location	S	0..*	BackboneElement	(USCDI) List of locations where the patient has been
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
location	S	1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
status		0..1	code	planned | active | reserved | completed Binding: EncounterLocationStatus (required): The status of the location.
physicalType		0..1	CodeableConcept	The physical type of the location (usually the level in the location hierachy - bed room ward etc.) Binding: LocationType (example): Physical form of the location.
period		0..1	Period	Time period during which the patient was present at the location
serviceProvider	S	0..1	Reference(US Core Organization Profile)	(USCDI) The organization (facility) responsible for this encounter
partOf		0..1	Reference(Encounter)	Another Encounter this encounter is part of
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Encounter.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Encounter.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Encounter.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.statusHistory.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.classHistory.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.type	extensible	USCoreEncounterType http://hl7.org/fhir/us/core/ValueSet/us-core-encounter-type
Encounter.serviceType	example	Pattern: SNOMED-CT Code 1287742003("Radiotherapy (procedure)") http://hl7.org/fhir/ValueSet/service-type from the FHIR Standard
Encounter.priority	example	ActPriority http://terminology.hl7.org/ValueSet/v3-ActPriority
Encounter.participant.type	extensible	ParticipantType http://hl7.org/fhir/ValueSet/encounter-participant-type from the FHIR Standard
Encounter.reasonCode	preferred	EncounterReasonCodes http://hl7.org/fhir/ValueSet/encounter-reason from the FHIR Standard
Encounter.diagnosis.use	preferred	DiagnosisRole http://hl7.org/fhir/ValueSet/diagnosis-role from the FHIR Standard
Encounter.hospitalization.admitSource	preferred	AdmitSource http://hl7.org/fhir/ValueSet/encounter-admit-source from the FHIR Standard
Encounter.hospitalization.reAdmission	example	Hl7VSReAdmissionIndicator http://terminology.hl7.org/ValueSet/v2-0092
Encounter.hospitalization.dietPreference	example	Diet http://hl7.org/fhir/ValueSet/encounter-diet from the FHIR Standard
Encounter.hospitalization.specialCourtesy	preferred	SpecialCourtesy http://hl7.org/fhir/ValueSet/encounter-special-courtesy from the FHIR Standard
Encounter.hospitalization.specialArrangement	preferred	SpecialArrangements http://hl7.org/fhir/ValueSet/encounter-special-arrangements from the FHIR Standard
Encounter.hospitalization.dischargeDisposition	preferred	USCoreDischargeDisposition (a valid code from http://www.nubc.org/patient-discharge) http://hl7.org/fhir/us/core/ValueSet/us-core-discharge-disposition
Encounter.location.status	required	EncounterLocationStatus http://hl7.org/fhir/ValueSet/encounter-location-status|4.0.1 from the FHIR Standard
Encounter.location.physicalType	example	LocationType http://hl7.org/fhir/ValueSet/location-physical-type from the FHIR Standard

Summary

Mandatory: 1 element
Must-Support: 4 elements

Structures

This structure refers to these other structures:

• Radiotherapy Treatment Plan (http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-treatment-plan)
• Radiotherapy Planned Phase (http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-planned-phase)
• US Core Location Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-location)

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number

Slices

This structure defines the following Slices:

• The element 1 is sliced based on the value of Encounter.identifier
• The element 1 is sliced based on the value of Encounter.basedOn

Name	Flags	Card.	Type	Description & Constraints
Encounter			USCoreEncounterProfile
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
Slices for identifier		0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:dicomTreatmentSessionUid	S	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
system		1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
serviceType		1..1	CodeableConcept	Specific type of service Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
location
location		1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Encounter		0..*	USCoreEncounterProfile	An interaction during which services are provided to the patient
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
Slices for identifier	SΣ	0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:All Slices				Content/Rules for all slices
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
system	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	1..1	string	(USCDI) The value that is unique Example General: 123456
identifier:dicomTreatmentSessionUid	SΣ	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
use	?!Σ	0..1	code	usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
system	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
value	SΣ	1..1	string	(USCDI) The value that is unique Example General: 123456
status	?!SΣ	1..1	code	(USCDI) planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
class	SΣ	1..1	Coding	(USCDI) Classification of patient encounter Binding: ActEncounterCode (extensible): Classification of the encounter.
type	SΣ	1..*	CodeableConcept	(USCDI) Specific type of encounter Binding: US Core Encounter Type (extensible): Valueset to describe the Encounter Type
serviceType	Σ	1..1	CodeableConcept	Specific type of service Binding: ServiceType (example): Broad categorization of the service that is to be provided. Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) The patient or group present at the encounter
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
participant	SΣ	0..*	BackboneElement	(USCDI) List of participants involved in the encounter
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
type	SΣ	0..*	CodeableConcept	(USCDI) Role of participant in encounter Binding: ParticipantType (extensible): Role of participant in encounter.
period	S	0..1	Period	(USCDI) Period of time during the encounter that the participant participated
individual	SΣ	0..1	Reference(US Core Practitioner Profile)	(USCDI) Persons involved in the encounter other than the patient
period	S	0..1	Period	(USCDI) The start and end time of the encounter
reasonCode	SΣ	0..*	CodeableConcept	(USCDI) Coded reason the encounter takes place Binding: EncounterReasonCodes (preferred): Reason why the encounter takes place.
reasonReference	SΣ	0..*	Reference(US Core Condition Problems and Health Concerns Profile | US Core Condition Encounter Diagnosis Profile)	(USCDI) Reason the encounter takes place (reference)
hospitalization	S	0..1	BackboneElement	(USCDI) Details about the admission to a healthcare service
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
dischargeDisposition	S	0..1	CodeableConcept	(USCDI) Category or kind of location after discharge Binding: US Core Discharge Disposition (preferred): National Uniform Billing Committee, manual UB-04, UB form locator 17
location	S	0..*	BackboneElement	(USCDI) List of locations where the patient has been
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
location	S	1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
serviceProvider	S	0..1	Reference(US Core Organization Profile)	(USCDI) The organization (facility) responsible for this encounter
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Encounter.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.type	extensible	USCoreEncounterType http://hl7.org/fhir/us/core/ValueSet/us-core-encounter-type
Encounter.serviceType	example	Pattern: SNOMED-CT Code 1287742003("Radiotherapy (procedure)") http://hl7.org/fhir/ValueSet/service-type from the FHIR Standard
Encounter.participant.type	extensible	ParticipantType http://hl7.org/fhir/ValueSet/encounter-participant-type from the FHIR Standard
Encounter.reasonCode	preferred	EncounterReasonCodes http://hl7.org/fhir/ValueSet/encounter-reason from the FHIR Standard
Encounter.hospitalization.dischargeDisposition	preferred	USCoreDischargeDisposition (a valid code from http://www.nubc.org/patient-discharge) http://hl7.org/fhir/us/core/ValueSet/us-core-discharge-disposition

Name	Flags	Card.	Type	Description & Constraints
Encounter		0..*	USCoreEncounterProfile	An interaction during which services are provided to the patient
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
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
radiotherapySessionNumber	S	0..1	positiveInt	Session Number URL: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
Slices for identifier	SΣ	0..*	Identifier	(USCDI) Identifier(s) by which this encounter is known Slice: Unordered, Open by value:system
identifier:All Slices				Content/Rules for all slices
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	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Example General: http://www.acme.com/identifiers/patient
value	SΣ	1..1	string	(USCDI) 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)
identifier:dicomTreatmentSessionUid	SΣ	0..1	Identifier	DICOM Treatment Session UID (300A,0700)
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	SΣ	1..1	uri	(USCDI) The namespace for the identifier value Required Pattern: urn:dicom:uid
value	SΣ	1..1	string	(USCDI) 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)
status	?!SΣ	1..1	code	(USCDI) planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
statusHistory		0..*	BackboneElement	List of past encounter statuses
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
status		1..1	code	planned | arrived | triaged | in-progress | onleave | finished | cancelled + Binding: EncounterStatus (required): Current state of the encounter.
period		1..1	Period	The time that the episode was in the specified status
class	SΣ	1..1	Coding	(USCDI) Classification of patient encounter Binding: ActEncounterCode (extensible): Classification of the encounter.
classHistory		0..*	BackboneElement	List of past encounter classes
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
class		1..1	Coding	inpatient | outpatient | ambulatory | emergency + Binding: ActEncounterCode (extensible): Classification of the encounter.
period		1..1	Period	The time that the episode was in the specified class
type	SΣ	1..*	CodeableConcept	(USCDI) Specific type of encounter Binding: US Core Encounter Type (extensible): Valueset to describe the Encounter Type
serviceType	Σ	1..1	CodeableConcept	Specific type of service Binding: ServiceType (example): Broad categorization of the service that is to be provided. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://snomed.info/sct
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 1287742003
display		1..1	string	Representation defined by the system Fixed Value: Radiotherapy (procedure)
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
priority		0..1	CodeableConcept	Indicates the urgency of the encounter Binding: ActPriority (example): Indicates the urgency of the encounter.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) The patient or group present at the encounter
episodeOfCare	Σ	0..*	Reference(EpisodeOfCare)	Episode(s) of care that this encounter should be recorded against
Slices for basedOn		0..*	Reference(ServiceRequest)	The ServiceRequest that initiated this encounter Slice: Unordered, Open by profile:$this.resolve()
basedOn:treatment-plan	S	0..*	Reference(Radiotherapy Treatment Plan)	Radiotherapy Treatment Plan for which this Session takes place or took place.
basedOn:planned-phase	S	0..*	Reference(Radiotherapy Planned Phase)	Radiotherapy Planned Phase for which this Session takes place or took place.
participant	SΣ	0..*	BackboneElement	(USCDI) List of participants involved in the encounter
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
type	SΣ	0..*	CodeableConcept	(USCDI) Role of participant in encounter Binding: ParticipantType (extensible): Role of participant in encounter.
period	S	0..1	Period	(USCDI) Period of time during the encounter that the participant participated
individual	SΣ	0..1	Reference(US Core Practitioner Profile S | US Core PractitionerRole Profile | US Core RelatedPerson Profile)	(USCDI) Persons involved in the encounter other than the patient
appointment	Σ	0..*	Reference(Appointment)	The appointment that scheduled this encounter
period	S	0..1	Period	(USCDI) The start and end time of the encounter
length		0..1	Duration	Quantity of time the encounter lasted (less time absent)
reasonCode	SΣ	0..*	CodeableConcept	(USCDI) Coded reason the encounter takes place Binding: EncounterReasonCodes (preferred): Reason why the encounter takes place.
reasonReference	SΣ	0..*	Reference(US Core Condition Problems and Health Concerns Profile S | US Core Condition Encounter Diagnosis Profile S | US Core Procedure Profile | Observation | ImmunizationRecommendation)	(USCDI) Reason the encounter takes place (reference)
diagnosis	Σ	0..*	BackboneElement	The list of diagnosis relevant to this encounter
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
condition	Σ	1..1	Reference(Condition | Procedure)	The diagnosis or procedure relevant to the encounter
use		0..1	CodeableConcept	Role that this diagnosis has within the encounter (e.g. admission, billing, discharge …) Binding: DiagnosisRole (preferred): The type of diagnosis this condition represents.
rank		0..1	positiveInt	Ranking of the diagnosis (for each role type)
account		0..*	Reference(Account)	The set of accounts that may be used for billing for this Encounter
hospitalization	S	0..1	BackboneElement	(USCDI) Details about the admission to a healthcare service
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
preAdmissionIdentifier		0..1	Identifier	Pre-admission identifier
origin		0..1	Reference(Location | Organization)	The location/organization from which the patient came before admission
admitSource		0..1	CodeableConcept	From where patient was admitted (physician referral, transfer) Binding: AdmitSource (preferred): From where the patient was admitted.
reAdmission		0..1	CodeableConcept	The type of hospital re-admission that has occurred (if any). If the value is absent, then this is not identified as a readmission Binding: hl7VS-re-admissionIndicator (example): The reason for re-admission of this hospitalization encounter.
dietPreference		0..*	CodeableConcept	Diet preferences reported by the patient Binding: Diet (example): Medical, cultural or ethical food preferences to help with catering requirements.
specialCourtesy		0..*	CodeableConcept	Special courtesies (VIP, board member) Binding: SpecialCourtesy (preferred): Special courtesies.
specialArrangement		0..*	CodeableConcept	Wheelchair, translator, stretcher, etc. Binding: SpecialArrangements (preferred): Special arrangements.
destination		0..1	Reference(Location | Organization)	Location/organization to which the patient is discharged
dischargeDisposition	S	0..1	CodeableConcept	(USCDI) Category or kind of location after discharge Binding: US Core Discharge Disposition (preferred): National Uniform Billing Committee, manual UB-04, UB form locator 17
location	S	0..*	BackboneElement	(USCDI) List of locations where the patient has been
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
location	S	1..1	Reference(US Core Location Profile)	(USCDI) Location the encounter takes place
status		0..1	code	planned | active | reserved | completed Binding: EncounterLocationStatus (required): The status of the location.
physicalType		0..1	CodeableConcept	The physical type of the location (usually the level in the location hierachy - bed room ward etc.) Binding: LocationType (example): Physical form of the location.
period		0..1	Period	Time period during which the patient was present at the location
serviceProvider	S	0..1	Reference(US Core Organization Profile)	(USCDI) The organization (facility) responsible for this encounter
partOf		0..1	Reference(Encounter)	Another Encounter this encounter is part of
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Encounter.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Encounter.identifier.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.use	required	IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 from the FHIR Standard
Encounter.identifier:dicomTreatmentSessionUid.type	extensible	Identifier Type Codes http://hl7.org/fhir/ValueSet/identifier-type from the FHIR Standard
Encounter.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.statusHistory.status	required	EncounterStatus http://hl7.org/fhir/ValueSet/encounter-status|4.0.1 from the FHIR Standard
Encounter.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.classHistory.class	extensible	ActEncounterCode http://terminology.hl7.org/ValueSet/v3-ActEncounterCode
Encounter.type	extensible	USCoreEncounterType http://hl7.org/fhir/us/core/ValueSet/us-core-encounter-type
Encounter.serviceType	example	Pattern: SNOMED-CT Code 1287742003("Radiotherapy (procedure)") http://hl7.org/fhir/ValueSet/service-type from the FHIR Standard
Encounter.priority	example	ActPriority http://terminology.hl7.org/ValueSet/v3-ActPriority
Encounter.participant.type	extensible	ParticipantType http://hl7.org/fhir/ValueSet/encounter-participant-type from the FHIR Standard
Encounter.reasonCode	preferred	EncounterReasonCodes http://hl7.org/fhir/ValueSet/encounter-reason from the FHIR Standard
Encounter.diagnosis.use	preferred	DiagnosisRole http://hl7.org/fhir/ValueSet/diagnosis-role from the FHIR Standard
Encounter.hospitalization.admitSource	preferred	AdmitSource http://hl7.org/fhir/ValueSet/encounter-admit-source from the FHIR Standard
Encounter.hospitalization.reAdmission	example	Hl7VSReAdmissionIndicator http://terminology.hl7.org/ValueSet/v2-0092
Encounter.hospitalization.dietPreference	example	Diet http://hl7.org/fhir/ValueSet/encounter-diet from the FHIR Standard
Encounter.hospitalization.specialCourtesy	preferred	SpecialCourtesy http://hl7.org/fhir/ValueSet/encounter-special-courtesy from the FHIR Standard
Encounter.hospitalization.specialArrangement	preferred	SpecialArrangements http://hl7.org/fhir/ValueSet/encounter-special-arrangements from the FHIR Standard
Encounter.hospitalization.dischargeDisposition	preferred	USCoreDischargeDisposition (a valid code from http://www.nubc.org/patient-discharge) http://hl7.org/fhir/us/core/ValueSet/us-core-discharge-disposition
Encounter.location.status	required	EncounterLocationStatus http://hl7.org/fhir/ValueSet/encounter-location-status|4.0.1 from the FHIR Standard
Encounter.location.physicalType	example	LocationType http://hl7.org/fhir/ValueSet/location-physical-type from the FHIR Standard

Summary

Mandatory: 1 element
Must-Support: 4 elements

Structures

This structure refers to these other structures:

• Radiotherapy Treatment Plan (http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-treatment-plan)
• Radiotherapy Planned Phase (http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-planned-phase)
• US Core Location Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-location)

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number

Slices

This structure defines the following Slices:

• The element 1 is sliced based on the value of Encounter.identifier
• The element 1 is sliced based on the value of Encounter.basedOn