HL7 Europe Base and Core FHIR IG
2.0.0 - trial-use 150

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 2.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/base/ and changes regularly. See the Directory of published versions

## EHDSAllergyIntolerance to FHIR AllergyIntolerance Mapping

EHDSAllergyIntolerance → AllergyIntoleranceEuCore
Ongoing alignment: The models are expected to continue evolving, with updates incorporated into this Implementation Guide to maintain alignment with the EHDS Implementing Acts.

### EHDSAllergyIntolerance → AllergyIntoleranceEuCore

This page explains how conceptual elements from the EHDS logical model are expressed in the corresponding FHIR AllergyIntoleranceEuCore profile used by this Implementation Guide.

Mapping Context

- Source logical model: EHDSAllergyIntolerance
- Target FHIR profile: AllergyIntoleranceEuCore

EHDSAllergyIntolerance → AllergyIntoleranceEuCore
EHDSAllergyIntolerance (Logical Model) | Relationship | AllergyIntoleranceEuCore
--- | --- | ---
Element | Relation | Resource | Element | Notes
header | related-to | AllergyIntolerance | . | Dataset-level; not usually carried in AllergyIntolerance as-is.
header.subject | equivalent | AllergyIntolerance | patient |
header.identifier | equivalent | AllergyIntolerance | identifier | Copy over all identifiers if multiple.
header.author[x] | equivalent | AllergyIntolerance | recorder〔R4〕 participant.actor〔R5〕 | With participant.function = "http://terminology.hl7.org/CodeSystem/provenance-participant-type#author"
header.date | equivalent | AllergyIntolerance | recordedDate |
header.status | equivalent | AllergyIntolerance | clinicalStatus |
header.source | equivalent | AllergyIntolerance | asserter〔R4〕 participant.actor〔R5〕 | With participant.function = "http://terminology.hl7.org/CodeSystem/provenance-participant-type#informant"
header.language | equivalent | AllergyIntolerance | language |
agentOrAllergen | equivalent | AllergyIntolerance | code |
note | source-is-broader-than-target | AllergyIntolerance | note.text |
criticality | equivalent | AllergyIntolerance | criticality |
certainty | equivalent | AllergyIntolerance | verificationStatus |
onsetDate | equivalent | AllergyIntolerance | onset[x] | FHIR supports multiple datatypes; here you have dateTime → map to `onsetDateTime`.
endDate | equivalent | AllergyIntolerance | extension:abatement |
reaction | equivalent | AllergyIntolerance | reaction |
reaction.agentOrAllergen | equivalent | AllergyIntolerance | reaction.substance | Maps the reaction-level causative agent where provided.
reaction.manifestation | equivalent | AllergyIntolerance | reaction.manifestation |
reaction.severity | equivalent | AllergyIntolerance | reaction.severity |
reaction.onset | equivalent | AllergyIntolerance | reaction.onset |

Return to overview: EHDS Logical Models → FHIR Profiles