EHDS Logical Information Models
0.3.0 - qa-preview

EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.3.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/Xt-EHR/xt-ehr-common/ and changes regularly. See the Directory of published versions

Logical Model: EHDSAlert - Detailed Descriptions

Draft as of 2026-02-09

Definitions for the EHDSAlert logical model.

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

0. EHDSAlert
Definition

A statement higlighting a fact about the patient that requires clinical attention to ensure safety and prevent adverse outcomes. Example 1: intolerance to aspirin due to gastrointestinal bleeding. Example 2: intolerance to captopril because of cough (the patient is not allergic but can't tolerate it because of persistent cough) Example 3: the patient has a rare disease that requires special treatment Example 4: Airway Alert / Difficult Intubation Example 5: Diagnoses such as malignant hyperthermia, porphyria, and bleeding disorders; special treatments like anticoagulants or immunosuppressants; implanted devices. Example 6: transplanted organs illustrate other information that has to be taken into account in a healthcare contact. Example 7: participation in a clinical trial that has to be taken into account in a healthcare contact.


Base definition for all types defined in FHIR type system.

ShortAlert 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. EHDSAlert.header
Definition

Basic metadata for this information

ShortBasic metadata for this information
Control1..1
TypeBase
4. EHDSAlert.header.subject
Definition

Patient/subject information

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

Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).

ShortBusiness identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
8. EHDSAlert.header.author[x]
Definition

The author of the alert statement, i.e. the setter of the alert.

ShortThe author of the alert statement, i.e. the setter of the alert.
Control0..*
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]
10. EHDSAlert.header.date
Definition

Date and optionally time of authoring/issuing

ShortDate and optionally time of authoring/issuing
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSAlert.header.status
Definition

Current status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.

ShortCurrent status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.
Control1..1
Binding

hl7:Flag-status

TypeCodeableConcept
14. EHDSAlert.header.source
Definition

Source of information (e.g. patient, patient's proxy). Used in case the patient has authored the information or the author has submitted patient-stated information.

ShortSource of information (e.g. patient, patient's proxy). Used in case the patient has authored the information or the author has submitted patient-stated information.
Control0..1
TypeCodeableConcept
16. EHDSAlert.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
18. EHDSAlert.code
Definition

A coded representation of the alert.

ShortA coded representation of the alert.
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
20. EHDSAlert.description
Definition

Narrative representation of the alert.

ShortNarrative representation of the alert.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
22. EHDSAlert.priority
Definition

A code that identifies the priority of the alert.

ShortA code that identifies the priority of the alert.
Control0..1
Binding

hl7:Flag-priority-code

TypeCodeableConcept
24. EHDSAlert.period
Definition

Time period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.

ShortTime period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.
Control0..1
TypePeriod
26. EHDSAlert.sourceReference
Definition

A reference to the resource the alert is about.

ShortA reference to the resource the alert is about.
Control0..*
TypeResource

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

0. EHDSAlert
Definition

A statement higlighting a fact about the patient that requires clinical attention to ensure safety and prevent adverse outcomes. Example 1: intolerance to aspirin due to gastrointestinal bleeding. Example 2: intolerance to captopril because of cough (the patient is not allergic but can't tolerate it because of persistent cough) Example 3: the patient has a rare disease that requires special treatment Example 4: Airway Alert / Difficult Intubation Example 5: Diagnoses such as malignant hyperthermia, porphyria, and bleeding disorders; special treatments like anticoagulants or immunosuppressants; implanted devices. Example 6: transplanted organs illustrate other information that has to be taken into account in a healthcare contact. Example 7: participation in a clinical trial that has to be taken into account in a healthcare contact.

ShortAlert model
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSAlert.header
4. EHDSAlert.header.author[x]
Definition

The author of the alert statement, i.e. the setter of the alert.

ShortThe author of the alert statement, i.e. the setter of the alert.
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
6. EHDSAlert.header.status
Definition

Current status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.

ShortCurrent status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.
Binding

hl7:Flag-status

8. EHDSAlert.code
Definition

A coded representation of the alert.

ShortA coded representation of the alert.
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
10. EHDSAlert.description
Definition

Narrative representation of the alert.

ShortNarrative representation of the alert.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSAlert.priority
Definition

A code that identifies the priority of the alert.

ShortA code that identifies the priority of the alert.
Control0..1
Binding

hl7:Flag-priority-code

TypeCodeableConcept
14. EHDSAlert.period
Definition

Time period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.

ShortTime period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.
Control0..1
TypePeriod
16. EHDSAlert.sourceReference
Definition

A reference to the resource the alert is about.

ShortA reference to the resource the alert is about.
Control0..*
TypeResource

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

0. EHDSAlert
Definition

A statement higlighting a fact about the patient that requires clinical attention to ensure safety and prevent adverse outcomes. Example 1: intolerance to aspirin due to gastrointestinal bleeding. Example 2: intolerance to captopril because of cough (the patient is not allergic but can't tolerate it because of persistent cough) Example 3: the patient has a rare disease that requires special treatment Example 4: Airway Alert / Difficult Intubation Example 5: Diagnoses such as malignant hyperthermia, porphyria, and bleeding disorders; special treatments like anticoagulants or immunosuppressants; implanted devices. Example 6: transplanted organs illustrate other information that has to be taken into account in a healthcare contact. Example 7: participation in a clinical trial that has to be taken into account in a healthcare contact.

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

Basic metadata for this information

ShortBasic metadata for this information
Control1..1
TypeBase
4. EHDSAlert.header.subject
Definition

Patient/subject information

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

Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).

ShortBusiness identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
8. EHDSAlert.header.author[x]
Definition

The author of the alert statement, i.e. the setter of the alert.

ShortThe author of the alert statement, i.e. the setter of the alert.
Control0..*
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]
10. EHDSAlert.header.date
Definition

Date and optionally time of authoring/issuing

ShortDate and optionally time of authoring/issuing
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSAlert.header.status
Definition

Current status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.

ShortCurrent status of the alert, indicates whether this alert is active and needs to be displayed to a user, or whether it is no longer needed or was entered in error.
Control1..1
Binding

hl7:Flag-status

TypeCodeableConcept
14. EHDSAlert.header.source
Definition

Source of information (e.g. patient, patient's proxy). Used in case the patient has authored the information or the author has submitted patient-stated information.

ShortSource of information (e.g. patient, patient's proxy). Used in case the patient has authored the information or the author has submitted patient-stated information.
Control0..1
TypeCodeableConcept
16. EHDSAlert.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
18. EHDSAlert.code
Definition

A coded representation of the alert.

ShortA coded representation of the alert.
Control0..1
Binding

SNOMED CT

TypeCodeableConcept
20. EHDSAlert.description
Definition

Narrative representation of the alert.

ShortNarrative representation of the alert.
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
22. EHDSAlert.priority
Definition

A code that identifies the priority of the alert.

ShortA code that identifies the priority of the alert.
Control0..1
Binding

hl7:Flag-priority-code

TypeCodeableConcept
24. EHDSAlert.period
Definition

Time period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.

ShortTime period when alert is active. The period of time from the activation of the alert to inactivation of the alert. If the alert is active, the end of the period should be unspecified.
Control0..1
TypePeriod
26. EHDSAlert.sourceReference
Definition

A reference to the resource the alert is about.

ShortA reference to the resource the alert is about.
Control0..*
TypeResource