HL7 Europe Base and Core FHIR IG
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HL7 Europe Base and Core FHIR IG, published by HL7 Europe. This guide is not an authorized publication; it is the continuous build for version 0.2.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/base-r5/ and changes regularly. See the Directory of published versions

EHDSAllergyIntolerance to FHIR AllergyIntolerance Mapping

EHDSAllergyIntolerance → AllergyIntolerance

Note: The content of this page is work in progress and may change based on ongoing discussions within the working group.

The technical solutions listed are possible candidates under consideration and are not yet approved or ready for implementation.

EHDSAllergyIntolerance → AllergyIntolerance

This page describes the element-by-element mapping from the EHDSAllergyIntolerance logical model to the FHIR AllergyIntolerance profile in this Implementation Guide.

EHDSAllergyIntolerance → AllergyIntolerance
EHDSAllergyIntolerance (Logical Model) Relationship AllergyIntolerance
Element Description Relation Element Description Notes
header Common header for all patient-related data. relatedto . General metadata. Dataset-level; not usually carried in AllergyIntolerance as-is.
header.subject Patient/subject this alert is about. equal subject Reference to the patient or subject of the allergy/intolerance. Reference to Patient (or other subject).
header.identifier Business identifier for the object. equal identifier Business identifier for this allergy. Copy over all identifiers if multiple.
header.authorship Resource authoring details relatedto author Author of the allergy/intolerance record. Can reference Practitioner, PractitionerRole, or Organization.
header.authorship.author[x] Who created/issued the alert. equivalent recorder Who recorded the sensitivity. Can reference Device, Organization, Patient, Practitioner, or PractitionerRole.
header.authorship.datetime Date/time the resource was issued. equivalent recordedDate When the allergy/intolerance was recorded.
header.lastUpdate Last technical correction/update. XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
header.status Status of the dataset/resource. XXXX XXXX AllergyIntolerance status is mapped from EHDSAlert.status (see below). Header status ≠ clinical alert status. Clarify the difference
header.statusReason[x] Reason for current dataset status. XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
header.language Language of the resource (IETF tag). equivalent language Language used in the flag text.
agentOrAllergen A specific allergen or other agent/substance (drug, food, chemical agent, etc.) to which the patient has an adverse reaction propensity. equal code Concept that identifies the substance, product, or agent responsible. CodeableConcept. Bound in EHDS to eHDSI value sets; in FHIR usually VS: AllergyIntolerance Substance/Product.
typeOfPropensity Describes whether the condition refers to an allergy, intolerance, or unknown class. equal type Allergy vs intolerance. Maps to AllergyIntolerance.type (allergy | intolerance | ...). Value sets: eHDSIAdverseEventType / HL7.
description Textual description of the allergy or intolerance. source-is-broader-than-target text or note.text Additional narrative about the allergy/intolerance. FHIR doesn't have a single free-text "description" element; use AllergyIntolerance.note (0..*). Could also populate text.div if profiling.
criticality Estimate of the potential clinical harm, or seriousness, of a reaction. equal criticality Estimate of potential clinical harm. ValueSets in EHDS reference eHDSICriticality; FHIR has its own required VS.
certainty Assertion about the certainty associated with the propensity (diagnostic/clinical evidence). equal verificationStatus Clinical verification status of the allergy/intolerance. EHDS name "certainty" ≈ FHIR "verificationStatus" (confirmed / refuted / unconfirmed).
status Current status of the allergy or intolerance (active, in remission, resolved, etc.). equal clinicalStatus Clinical status of the allergy/intolerance. EHDS "status" → FHIR "clinicalStatus". Both point to the clinical/temporal lifecycle.
onsetDate When the allergy or intolerance was identified. equal onset[x] When the allergy/intolerance was identified or first became relevant. FHIR supports multiple datatypes; here you have dateTime → map to onsetDateTime.
endDate Date of resolution of the allergy (when it was deemed no longer necessary to track). equal extension:abatement Date and/or time of the last known occurrence of a reaction.
reaction Adverse Reaction Events linked to exposure to substance. equal reaction Details about each adverse reaction event. 0..* in both models.
reaction.manifestation Description of the clinical manifestation of the allergic reaction (e.g. anaphylactic shock, angioedema). equal reaction.manifestation Clinical symptoms and/or signs that are observed during the reaction. CodeableConcept; EHDS allows multiple; FHIR reaction.manifestation is 1..* CodeableConcept.
reaction.date Date and time of allergy manifestation. equal reaction.date Date and time of allergy manifestation. Both are date/time points.
reaction.severity Severity of the clinical manifestation. equal reaction.severity Mild / moderate / severe. FHIR has required VS; EHDS references eHDSISeverity.
reaction.onsetDate Date of the observation of the reaction. equal reaction.onset When the reaction occurred. EHDS distinguishes "date of observation"; FHIR has one reaction.onset → use that.

Return to overview: EHDS Logical Models → FHIR Profiles