EHDS Logical Information Models
0.2.1 - qa-preview

EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.2.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/costateixeira/xt-ehr-common/ and changes regularly. See the Directory of published versions

Logical Model: EHDSEncounterCore - Detailed Descriptions

Draft as of 2025-12-03

Definitions for the EHDSEncounterCore logical model.

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

0. EHDSEncounterCore
Definition

EHDS refined base model for Encounter


Base definition for all types defined in FHIR type system.

ShortEncounter modelBase for all types and resources
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSEncounterCore.header
Definition

Common header for all patient-related data

ShortCommon header for all patient-related data
Control1..1
TypeBase
4. EHDSEncounterCore.header.subject
Definition

Patient/subject information

ShortPatient/subject information
Control1..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient
6. EHDSEncounterCore.header.identifier
Definition

Business identifier for the object

ShortBusiness identifier for the object
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
8. EHDSEncounterCore.header.authorship
Definition

Resource authoring details

ShortResource authoring details
Control1..*
TypeBase
10. EHDSEncounterCore.header.authorship.author[x]
Definition

Author(s) by whom the resource was/were authored. Multiple authors could be provided.

ShortAuthor(s) by whom the resource was/were authored. Multiple authors could be provided.
Control1..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
12. EHDSEncounterCore.header.authorship.datetime
Definition

Date and time of authoring/issuing

ShortDate and time of authoring/issuing
Control1..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
14. EHDSEncounterCore.header.lastUpdate
Definition

Date and time of the last update to the resource (may be used for technical corrections).

ShortDate and time of the last update to the resource (may be used for technical corrections).
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
16. EHDSEncounterCore.header.status
Definition

Status of the resource or document

ShortStatus of the resource or document
Control1..1
TypeCodeableConcept
18. EHDSEncounterCore.header.statusReason[x]
Definition

Reason for the current status of the resource.

ShortReason for the current status of the resource.
Control0..1
TypeChoice of: CodeableConcept, string
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
20. EHDSEncounterCore.header.language
Definition

Language in which the resource is written. Language is expressed by the IETF language tag.

ShortLanguage in which the resource is written. Language is expressed by the IETF language tag.
Control0..1
Binding

BCP 47

TypeCodeableConcept
22. EHDSEncounterCore.priority
Definition

Indicates the urgency of the encounter.

ShortPriority
Control0..1
Binding

hl7:v3-xEncounterAdmissionUrgency

TypeCodeableConcept
24. EHDSEncounterCore.actualPeriod
Definition

The actual start and end time of the encounter

ShortThe actual start and end time of the encounter
Control0..1
TypePeriod
26. EHDSEncounterCore.admission
Definition

Details about the admission to a healthcare service

ShortDetails about the admission to a healthcare service
Control0..1
TypeBase
28. EHDSEncounterCore.admission.reason[x]
Definition

Reason(s) for admission, e.g. problem, procedure or finding.

ShortReason(s) for admission, e.g. problem, procedure or finding.
Control0..*
TypeChoice of: CodeableConcept, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
30. EHDSEncounterCore.admission.reasonComment
Definition

Explanation of the reason for the encounter.

ShortExplanation of the reason for the encounter.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
32. EHDSEncounterCore.admission.admitter
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
34. EHDSEncounterCore.admission.admittingOrganization
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
36. EHDSEncounterCore.admission.admitSourceType
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

TypeCodeableConcept
38. EHDSEncounterCore.admission.admitSource
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
40. EHDSEncounterCore.admission.referringProfessional
Definition

Referring Healthcare Professional

ShortReferring Healthcare Professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
42. EHDSEncounterCore.admission.legalStatus
Definition

Legal status can be either voluntary or involuntary, however the legal status is always determined by a court. A patient can also receive healthcare based on a forensic status. (voluntary, involuntary, admission by legal authority).

ShortLegal status/situation at admission (indicates the basis on which the patient is staying in a healthcare organisation).
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
44. EHDSEncounterCore.discharge
Definition

Discharge details

ShortDischarge details
Control0..1
TypeBase
46. EHDSEncounterCore.discharge.destinationType
Definition

Type of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.

ShortType of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.
Control0..1
Binding

hl7.discharge-disposition

TypeCodeableConcept
48. EHDSEncounterCore.discharge.destinationLocation[x]
Definition

The location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.

ShortThe location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.
Control0..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
50. EHDSEncounterCore.location
Definition

List of locations where the patient has been.

ShortList of locations where the patient has been.
Control0..*
TypeBase
52. EHDSEncounterCore.location.period
Definition

Time period during which the patient was present at the location

ShortTime period during which the patient was present at the location
Control0..1
TypePeriod
54. EHDSEncounterCore.location.organisationPart[x]
Definition

Organisation or organisation part (department) where the patient was present.

ShortOrganisation or organisation part (department) where the patient was present.
Control1..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
56. EHDSEncounterCore.type
Definition

The type of the encounter whether inpatient or short stay encounter.

ShortEncounter type
Control1..1
Binding

hl7v3:ActEncounterCode

TypeCodeableConcept
58. EHDSEncounterCore.note
Definition

A narrative description of the encounter course.

ShortA narrative description of the encounter course.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension

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

0. EHDSEncounterCore
Definition

EHDS refined base model for Encounter

ShortEncounter model
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSEncounterCore.priority
Definition

Indicates the urgency of the encounter.

ShortPriority
Control0..1
Binding

hl7:v3-xEncounterAdmissionUrgency

TypeCodeableConcept
4. EHDSEncounterCore.actualPeriod
Definition

The actual start and end time of the encounter

ShortThe actual start and end time of the encounter
Control0..1
TypePeriod
6. EHDSEncounterCore.admission
Definition

Details about the admission to a healthcare service

ShortDetails about the admission to a healthcare service
Control0..1
TypeBase
8. EHDSEncounterCore.admission.reason[x]
Definition

Reason(s) for admission, e.g. problem, procedure or finding.

ShortReason(s) for admission, e.g. problem, procedure or finding.
Control0..*
TypeChoice of: CodeableConcept, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
10. EHDSEncounterCore.admission.reasonComment
Definition

Explanation of the reason for the encounter.

ShortExplanation of the reason for the encounter.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSEncounterCore.admission.admitter
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
14. EHDSEncounterCore.admission.admittingOrganization
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
16. EHDSEncounterCore.admission.admitSourceType
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

TypeCodeableConcept
18. EHDSEncounterCore.admission.admitSource
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
20. EHDSEncounterCore.admission.referringProfessional
Definition

Referring Healthcare Professional

ShortReferring Healthcare Professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
22. EHDSEncounterCore.admission.legalStatus
Definition

Legal status can be either voluntary or involuntary, however the legal status is always determined by a court. A patient can also receive healthcare based on a forensic status. (voluntary, involuntary, admission by legal authority).

ShortLegal status/situation at admission (indicates the basis on which the patient is staying in a healthcare organisation).
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
24. EHDSEncounterCore.discharge
Definition

Discharge details

ShortDischarge details
Control0..1
TypeBase
26. EHDSEncounterCore.discharge.destinationType
Definition

Type of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.

ShortType of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.
Control0..1
Binding

hl7.discharge-disposition

TypeCodeableConcept
28. EHDSEncounterCore.discharge.destinationLocation[x]
Definition

The location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.

ShortThe location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.
Control0..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
30. EHDSEncounterCore.location
Definition

List of locations where the patient has been.

ShortList of locations where the patient has been.
Control0..*
TypeBase
32. EHDSEncounterCore.location.period
Definition

Time period during which the patient was present at the location

ShortTime period during which the patient was present at the location
Control0..1
TypePeriod
34. EHDSEncounterCore.location.organisationPart[x]
Definition

Organisation or organisation part (department) where the patient was present.

ShortOrganisation or organisation part (department) where the patient was present.
Control1..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
36. EHDSEncounterCore.type
Definition

The type of the encounter whether inpatient or short stay encounter.

ShortEncounter type
Control1..1
Binding

hl7v3:ActEncounterCode

TypeCodeableConcept
38. EHDSEncounterCore.note
Definition

A narrative description of the encounter course.

ShortA narrative description of the encounter course.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension

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

0. EHDSEncounterCore
Definition

EHDS refined base model for Encounter

ShortEncounter model
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSEncounterCore.header
Definition

Common header for all patient-related data

ShortCommon header for all patient-related data
Control1..1
TypeBase
4. EHDSEncounterCore.header.subject
Definition

Patient/subject information

ShortPatient/subject information
Control1..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient
6. EHDSEncounterCore.header.identifier
Definition

Business identifier for the object

ShortBusiness identifier for the object
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
8. EHDSEncounterCore.header.authorship
Definition

Resource authoring details

ShortResource authoring details
Control1..*
TypeBase
10. EHDSEncounterCore.header.authorship.author[x]
Definition

Author(s) by whom the resource was/were authored. Multiple authors could be provided.

ShortAuthor(s) by whom the resource was/were authored. Multiple authors could be provided.
Control1..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
12. EHDSEncounterCore.header.authorship.datetime
Definition

Date and time of authoring/issuing

ShortDate and time of authoring/issuing
Control1..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
14. EHDSEncounterCore.header.lastUpdate
Definition

Date and time of the last update to the resource (may be used for technical corrections).

ShortDate and time of the last update to the resource (may be used for technical corrections).
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
16. EHDSEncounterCore.header.status
Definition

Status of the resource or document

ShortStatus of the resource or document
Control1..1
TypeCodeableConcept
18. EHDSEncounterCore.header.statusReason[x]
Definition

Reason for the current status of the resource.

ShortReason for the current status of the resource.
Control0..1
TypeChoice of: CodeableConcept, string
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
20. EHDSEncounterCore.header.language
Definition

Language in which the resource is written. Language is expressed by the IETF language tag.

ShortLanguage in which the resource is written. Language is expressed by the IETF language tag.
Control0..1
Binding

BCP 47

TypeCodeableConcept
22. EHDSEncounterCore.priority
Definition

Indicates the urgency of the encounter.

ShortPriority
Control0..1
Binding

hl7:v3-xEncounterAdmissionUrgency

TypeCodeableConcept
24. EHDSEncounterCore.actualPeriod
Definition

The actual start and end time of the encounter

ShortThe actual start and end time of the encounter
Control0..1
TypePeriod
26. EHDSEncounterCore.admission
Definition

Details about the admission to a healthcare service

ShortDetails about the admission to a healthcare service
Control0..1
TypeBase
28. EHDSEncounterCore.admission.reason[x]
Definition

Reason(s) for admission, e.g. problem, procedure or finding.

ShortReason(s) for admission, e.g. problem, procedure or finding.
Control0..*
TypeChoice of: CodeableConcept, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
30. EHDSEncounterCore.admission.reasonComment
Definition

Explanation of the reason for the encounter.

ShortExplanation of the reason for the encounter.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
32. EHDSEncounterCore.admission.admitter
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
34. EHDSEncounterCore.admission.admittingOrganization
Definition

Admitting healthcare professional

ShortAdmitting healthcare professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
36. EHDSEncounterCore.admission.admitSourceType
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

TypeCodeableConcept
38. EHDSEncounterCore.admission.admitSource
Definition

From where the patient was admitted (e.g. physician referral, transfer).

ShortFrom where the patient was admitted (e.g. physician referral, transfer).
Control0..1
Binding

hl7:admit-source

Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
40. EHDSEncounterCore.admission.referringProfessional
Definition

Referring Healthcare Professional

ShortReferring Healthcare Professional
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional
42. EHDSEncounterCore.admission.legalStatus
Definition

Legal status can be either voluntary or involuntary, however the legal status is always determined by a court. A patient can also receive healthcare based on a forensic status. (voluntary, involuntary, admission by legal authority).

ShortLegal status/situation at admission (indicates the basis on which the patient is staying in a healthcare organisation).
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
44. EHDSEncounterCore.discharge
Definition

Discharge details

ShortDischarge details
Control0..1
TypeBase
46. EHDSEncounterCore.discharge.destinationType
Definition

Type of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.

ShortType of location to which the patient will go after the encounter. E.g. home, hospital, nursing home, left against medical advice etc.
Control0..1
Binding

hl7.discharge-disposition

TypeCodeableConcept
48. EHDSEncounterCore.discharge.destinationLocation[x]
Definition

The location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.

ShortThe location/organisation to which the patient will go after the encounter. Name, address and telecommunication contact.
Control0..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
50. EHDSEncounterCore.location
Definition

List of locations where the patient has been.

ShortList of locations where the patient has been.
Control0..*
TypeBase
52. EHDSEncounterCore.location.period
Definition

Time period during which the patient was present at the location

ShortTime period during which the patient was present at the location
Control0..1
TypePeriod
54. EHDSEncounterCore.location.organisationPart[x]
Definition

Organisation or organisation part (department) where the patient was present.

ShortOrganisation or organisation part (department) where the patient was present.
Control1..1
TypeChoice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSLocation
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
56. EHDSEncounterCore.type
Definition

The type of the encounter whether inpatient or short stay encounter.

ShortEncounter type
Control1..1
Binding

hl7v3:ActEncounterCode

TypeCodeableConcept
58. EHDSEncounterCore.note
Definition

A narrative description of the encounter course.

ShortA narrative description of the encounter course.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension