EHDS Logical Information Models
0.2.1 - qa-preview

EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.2.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/costateixeira/xt-ehr-common/ and changes regularly. See the Directory of published versions

## ePrescription & eDispensation

### Information Models

#### EHDS information models for ePrescription:

Components of a prescription and their representation as EHDS information models:

- Prescription: EHDSMedicationPrescription
- Patient: EHDSPatient
- Prescriber: EHDSHealthProfessional
- Medication: EHDSMedication
- Usage instructions: EHDSDosaging

#### EHDS information models for eDispensation:

- Dispense: EHDSMedicationDispense
- Patient: EHDSPatient
- Dispenser: EHDSHealthProfessional
- Medication: EHDSMedication
- Usage instructions: EHDSDosaging
- Location: EHDSLocation

Please note that dispense can only include one medication - therefore, in case of multi-line prescriptions, the dispense should reference the prescription item rather than just the full prescription.

Components of declining a dispense and their representation as EHDS information models:

- DispenseDecline: EHDSDispenseDecline
- Patient: EHDSPatient
- Dispenser: EHDSHealthProfessional

Dispense can be declined for the whole prescription or just for a prescription item.

### FHIR Implementation Guide

FHIR Implementation Guide is being developed in a cross-project working group lead by HL7 Europe and IHE (see working group information). Business and data requirements defined in Xt-EHR Task 6.2 are discussed further in the working group in order to gather feedback from the implementers. Approved requirements are adopted by HL7 Europe MPD FHIR IG.

Ongoing work:

- R4 FHIR IG
- R5 FHIR IG

### IHE Profile

FHIR-based IHE profile for this use case is in draft status, please see IHE Medication Prescription and Delivery profile for more information.

IHE Profile has a global scope and is not part of Xt-EHR deliverable. However, the HL7 Europe / IHE joint working group (see above) allows mutually beneficial cooperation and early alignment.

### Supporting Information

- eHealth Network Guideline on ePrescription and eDispensation of Authorised Medicinal Products
- IHE Medication Prescription and Delivery profile (draft)
- ISO/DIS 17523 "Health informatics - Requirements for electronic prescriptions"
- MyHealth@EU requirements catalogue and CDA specification
- SNOMED CT Medicinal Product Model Specification
- EDQM Standard Terms
- European Medicines Agency ISO IDMP implementation guidance, including FHIR IG
- EMA SPOR
- UNICOM project: web page, FHIR IG, public deliverables
- Links to national medicines registers