Allergy and Intolerances is suggested as a mandatory section of Patient Summary. The only required element for each listed allergy, is specifying the agent or allergen. The Information elements for each allergy are listed in the EHDS-PS-AllergyIntolerance model below.
If the producing system have no record of allergies to list (e.g. the patient has no allergies, or the system have no allergy information), the system must provide a reason. This is in accordance with the specification in ISO IPS and updates to the HL7 FHIR IPS. The information elements and value sets suggested are taken from eHN Guideline, MyHealth@EU and HL7 FHIR IPS. In addition to that, the new ICD-11 Allergen classification has been added.

• Differential Table
• Snapshot Table

This structure is derived from EHDSDataSet

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSAllergyIntolerance		0..*	EHDSDataSet	Elements defined in Ancestors:header, presentedForm Allergy intolerance model Instances of this logical model can be the target of a Reference
agentOrAllergen		1..1	CodeableConcept	A specific allergen or other agent/substance (drug, food, chemical agent, etc.) to which the patient has an adverse reaction propensity. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.24 eHDSIActiveIngredient (ATC, used in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.61 eHDSISubstance (EMA SMS, used in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.19 eHDSIAllergenNoDrug (SCT, used in MH@EU); ICD-11 Allergens
typeOfPropensity		0..1	CodeableConcept	This element describes whether this condition refers to an allergy, non-allergy intolerance, or unknown class of intolerance (not known to be allergy or intolerance) Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.18 eHDSIAdverseEventType (SCT, used in MH@EU); http://hl7.org/fhir/ValueSet/allergy-intolerance-type (HL7, required in HL7 FHIR)
description		0..1	string	Textual description of 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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.57 eHDSICriticality (HL7, used in MH@EU); http://hl7.org/fhir/ValueSet/allergy-intolerance-criticality (HL7, required in HL7 FHIR)
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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.58 eHDSIAllergyCertainty (HL7, used in MH@EU) ; http://hl7.org/fhir/ValueSet/allergyintolerance-verification (HL7, required in HL7 FHIR)
status		0..1	CodeableConcept	Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.59 eHDSIAllergyStatus (HL7, used in MH@EU); http://hl7.org/fhir/ValueSet/allergyintolerance-clinical (HL7, required in HL7 FHIR)
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..
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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.5 eHDSIIllnessandDisorder (ICD-10, alternative in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.11 eHDSIReactionAllergy (SCT, alternative in MH@EU); ICD-11 MMS
date		0..1	dateTime	Date and time of allergy manifestation
severity		0..1	CodeableConcept	Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.13 eHDSISeverity (SCT, used in MH@EU); http://hl7.org/fhir/ValueSet/reaction-event-severity (HL7, Required in HL7 FHIR)
onsetDate		0..1	dateTime	Date of the observation of the reaction
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet	URI
EHDSAllergyIntolerance.agentOrAllergen	preferred
EHDSAllergyIntolerance.typeOfPropensity	preferred
EHDSAllergyIntolerance.criticality	preferred
EHDSAllergyIntolerance.certainty	preferred
EHDSAllergyIntolerance.status	preferred
EHDSAllergyIntolerance.reaction.manifestation	preferred
EHDSAllergyIntolerance.reaction.severity	preferred

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSAllergyIntolerance		0..*	EHDSDataSet	Elements defined in Ancestors:header, presentedForm Allergy intolerance model Instances of this logical model can be the target of a Reference
header		1..1	Base	Common header for all patient-related data
subject		1..1	EHDSPatient	Subject
identifier		0..*	Identifier	Business identifier for the object
authorship		1..*	Base	Authorship
author[x]		1..1		Author
authorEHDSHealthProfessional			EHDSHealthProfessional
authorEHDSOrganisation			EHDSOrganisation
authorEHDSDevice			EHDSDevice
datetime		1..1	dateTime	Date and time of authoring/issuing
lastUpdate		0..1	dateTime	Date and time of the last update to the resource
status		1..1	CodeableConcept	Status of the resource
statusReason[x]		0..1		Reason for the current status of the resource.
statusReasonCodeableConcept			CodeableConcept
statusReasonString			string
language		0..1	CodeableConcept	Language Binding Description: (preferred): BCP 47
version		0..1	string	Version
presentedForm		0..*	EHDSAttachment	A narrative easy-to-read representation of the full data set, e.g. PDF-version of a document
agentOrAllergen		1..1	CodeableConcept	A specific allergen or other agent/substance (drug, food, chemical agent, etc.) to which the patient has an adverse reaction propensity. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.24 eHDSIActiveIngredient (ATC, used in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.61 eHDSISubstance (EMA SMS, used in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.19 eHDSIAllergenNoDrug (SCT, used in MH@EU); ICD-11 Allergens
typeOfPropensity		0..1	CodeableConcept	This element describes whether this condition refers to an allergy, non-allergy intolerance, or unknown class of intolerance (not known to be allergy or intolerance) Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.18 eHDSIAdverseEventType (SCT, used in MH@EU); http://hl7.org/fhir/ValueSet/allergy-intolerance-type (HL7, required in HL7 FHIR)
description		0..1	string	Textual description of 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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.57 eHDSICriticality (HL7, used in MH@EU); http://hl7.org/fhir/ValueSet/allergy-intolerance-criticality (HL7, required in HL7 FHIR)
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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.58 eHDSIAllergyCertainty (HL7, used in MH@EU) ; http://hl7.org/fhir/ValueSet/allergyintolerance-verification (HL7, required in HL7 FHIR)
status		0..1	CodeableConcept	Current status of the allergy or intolerance, for example, whether it is active, in remission, resolved, etc. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.59 eHDSIAllergyStatus (HL7, used in MH@EU); http://hl7.org/fhir/ValueSet/allergyintolerance-clinical (HL7, required in HL7 FHIR)
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..
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): 1.3.6.1.4.1.12559.11.10.1.3.1.42.5 eHDSIIllnessandDisorder (ICD-10, alternative in MH@EU); 1.3.6.1.4.1.12559.11.10.1.3.1.42.11 eHDSIReactionAllergy (SCT, alternative in MH@EU); ICD-11 MMS
date		0..1	dateTime	Date and time of allergy manifestation
severity		0..1	CodeableConcept	Severity of the clinical manifestation of the allergic reaction. Binding Description: (preferred): 1.3.6.1.4.1.12559.11.10.1.3.1.42.13 eHDSISeverity (SCT, used in MH@EU); http://hl7.org/fhir/ValueSet/reaction-event-severity (HL7, Required in HL7 FHIR)
onsetDate		0..1	dateTime	Date of the observation of the reaction
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
EHDSAllergyIntolerance.header.language	preferred
EHDSAllergyIntolerance.agentOrAllergen	preferred
EHDSAllergyIntolerance.typeOfPropensity	preferred
EHDSAllergyIntolerance.criticality	preferred
EHDSAllergyIntolerance.certainty	preferred
EHDSAllergyIntolerance.status	preferred
EHDSAllergyIntolerance.reaction.manifestation	preferred
EHDSAllergyIntolerance.reaction.severity	preferred