NameFlagsCard.TypeDescription & Constraintsdoco
.. EncounterHistory TUDomainResourceA record of significant events/milestones key data throughout the history of an Encounter

Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
... encounter 0..1Reference(Encounter)The Encounter associated with this set of historic values
... identifier Σ0..*IdentifierIdentifier(s) by which this encounter is known

... status ?!Σ1..1codeplanned | in-progress | on-hold | discharged | completed | cancelled | discontinued | entered-in-error | unknown
Binding: Encounter Status (Required)
... class Σ1..1CodeableConceptClassification of patient encounter
Binding: ActEncounterCode (Extensible)
... type Σ0..*CodeableConceptSpecific type of encounter
Binding: Encounter Type (Example)

... serviceType Σ0..*CodeableReference(HealthcareService)Specific type of service
Binding: Service Type (Example)

... subject Σ0..1Reference(Patient | Group)The patient or group related to this encounter
... subjectStatus 0..1CodeableConceptThe current status of the subject in relation to the Encounter
Binding: Encounter Subject Status (Example)
... actualPeriod 0..1PeriodThe actual start and end time associated with this set of values associated with the encounter
... plannedStartDate 0..1dateTimeThe planned start date/time (or admission date) of the encounter
... plannedEndDate 0..1dateTimeThe planned end date/time (or discharge date) of the encounter
... length 0..1DurationActual quantity of time the encounter lasted (less time absent)
... location 0..*BackboneElementLocation of the patient at this point in the encounter

.... location 1..1Reference(Location)Location the encounter takes place
.... form 0..1CodeableConceptThe physical type of the location (usually the level in the location hierarchy - bed, room, ward, virtual etc.)
Binding: Location Form (Example)

doco Documentation for this format