EHDS Logical Information Models
0.4.0 - draft

EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.4.0 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: Allergy intolerance model

Official URL: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSAllergyIntolerance | Version: 0.4.0
Draft as of 2026-02-23 | Computable Name: EHDSAllergyIntolerance

Model for allergy or intolerance.

Usages:

- Derived from this Logical Model: AllergyIntolerance obligations
- Use this Logical Model: Imaging report model and Patient summary model

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

- Key Elements Table
- Differential Table
- Snapshot Table
- Statistics/References
- All

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  | 1..1 | Base | Basic metadata for this information
subject |  | 1..1 | EHDSPatient | Patient/subject information
identifier |  | 0..* | Identifier | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
author[x] |  | 0..* |  | The author of the allergy/intolerance information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
source |  | 0..1 | CodeableConcept | 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.
language |  | 0..1 | CodeableConcept | Language in which the resource is written. Language is expressed by the IETF language tag. Binding Description: (preferred): BCP 47
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​header.language | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  |  |  |
author[x] |  | 0..* | EHDSHealthProfessional, EHDSOrganisation, EHDSDevice | The author of the allergy/intolerance information.
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  | 1..1 | Base | Basic metadata for this information
subject |  | 1..1 | EHDSPatient | Patient/subject information
identifier |  | 0..* | Identifier | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
author[x] |  | 0..* |  | The author of the allergy/intolerance information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
source |  | 0..1 | CodeableConcept | 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.
language |  | 0..1 | CodeableConcept | Language in which the resource is written. Language is expressed by the IETF language tag. Binding Description: (preferred): BCP 47
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​header.language | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Summary

Mandatory: 0 element(1 nested mandatory element)

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  | 1..1 | Base | Basic metadata for this information
subject |  | 1..1 | EHDSPatient | Patient/subject information
identifier |  | 0..* | Identifier | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
author[x] |  | 0..* |  | The author of the allergy/intolerance information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
source |  | 0..1 | CodeableConcept | 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.
language |  | 0..1 | CodeableConcept | Language in which the resource is written. Language is expressed by the IETF language tag. Binding Description: (preferred): BCP 47
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​header.language | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

Differential View

This structure is derived from EHDSDataSet

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  |  |  |
author[x] |  | 0..* | EHDSHealthProfessional, EHDSOrganisation, EHDSDevice | The author of the allergy/intolerance information.
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSAllergyIntolerance |  | 0..* | EHDSDataSet | Allergy intolerance model Elements defined in Ancestors:header
header |  | 1..1 | Base | Basic metadata for this information
subject |  | 1..1 | EHDSPatient | Patient/subject information
identifier |  | 0..* | Identifier | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
author[x] |  | 0..* |  | The author of the allergy/intolerance information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): HL7 allergy intolerance status
source |  | 0..1 | CodeableConcept | 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.
language |  | 0..1 | CodeableConcept | Language in which the resource is written. Language is expressed by the IETF language tag. Binding Description: (preferred): BCP 47
agentOrAllergen |  | 1..1 | CodeableConcept | Code that identifies the allergy or intolerance Binding Description: (preferred): ATC, EMA SPOR SMS, SNOMED CT
note |  | 0..1 | string | Additional information about the allergy or intolerance
criticality |  | 0..1 | CodeableConcept | Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. Binding Description: (preferred): HL7 allergy intolerance criticality
certainty |  | 0..1 | CodeableConcept | Assertion about the certainty associated with a propensity, or potential risk, of a reaction to the identified substance. Diagnostic and /or clinical evidence of condition Binding Description: (preferred): HL7 allergy intolerance verification
onsetDate |  | 0..1 | dateTime | When allergy or intolerance was identified
endDate |  | 0..1 | dateTime | Date of resolution of the allergy (e.g. when the clinician deemed there is no longer any need to track the underlying condition)
reaction |  | 0..* | Base | Adverse reaction events linked to exposure to substance.
agentOrAllergen |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event
manifestation |  | 0..* | CodeableConcept | Description of the clinical manifestation of the allergic reaction. Example: anaphylactic shock, angioedema. (the clinical manifestation also gives information about the severity of the observed reaction). Binding Description: (preferred): ICD-10, SNOMED CT
severity |  | 0..1 | CodeableConcept | Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): SNOMED CT, HL7 reaction event severity
onset |  | 0..1 | dateTime | Date and time of the onset of the reaction
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSAllergyIntolerance.​header.status | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​header.language | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​agentOrAllergen | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​criticality | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​certainty | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.manifestation | Base | preferred |  | Not State | Unknown
EHDSAllergyIntolerance.​reaction.severity | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Summary

Mandatory: 0 element(1 nested mandatory element)

Other representations of profile: CSV, Excel