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/Xt-EHR/xt-ehr-common/ and changes regularly. See the Directory of published versions

## Logical Model: Service request model

Official URL: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSServiceRequest | Version: 0.2.1
Draft as of 2026-02-05 | Computable Name: EHDSServiceRequest

EHDS refined base model for Specification of requested service or services

Usages:

- Use this Logical Model: Encounter model, Imaging report model, Imaging study model, Laboratory report model... Show 2 more, Observation model and Specimen 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
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
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..* |  | Author(s) responsible for the provided information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Status of the resource or document
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
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.header.​language | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
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..* |  | Author(s) responsible for the provided information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Status of the resource or document
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
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.header.​language | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Summary

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
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..* |  | Author(s) responsible for the provided information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Status of the resource or document
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
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.header.​language | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

Differential View

This structure is derived from EHDSDataSet

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
EHDSServiceRequest |  | 0..* | EHDSDataSet | Service request model Elements defined in Ancestors:header Instances of this logical model can be the target of a Reference
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..* |  | Author(s) responsible for the provided information.
authorEHDSHealthProfessional |  |  | EHDSHealthProfessional |
authorEHDSOrganisation |  |  | EHDSOrganisation |
authorEHDSDevice |  |  | EHDSDevice |
date |  | 0..1 | dateTime | Date and optionally time of authoring/issuing
status |  | 1..1 | CodeableConcept | Status of the resource or document
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
serviceText |  | 0..1 | string | Service text
serviceCode |  | 0..1 | CodeableConcept | Service code Binding Description: (preferred): LOINC, NPU, SNOMED CT
reasonCode |  | 0..* | CodeableConcept | Reason code Binding Description: (preferred): ICD-10 (ICD-11 when available), SNOMED CT, Orphacode
quantity |  | 0..1 | Quantity | Quantity
bodySite |  | 0..* | EHDSBodyStructure | Anatomic location
reasonReference[x] |  | 0..* |  | Reason reference
reasonReferenceEHDSObservation |  |  | EHDSObservation |
reasonReferenceEHDSCondition |  |  | EHDSCondition |
reasonReferenceEHDSMedication |  |  | EHDSMedication |
priority |  | 0..1 | CodeableConcept | Priority Binding Description: (preferred): HL7 Request priority
supportingInformation[x] |  | 0..* |  | Supporting information
supportingInformationEHDSObservation |  |  | EHDSObservation |
supportingInformationEHDSCondition |  |  | EHDSCondition |
supportingInformationEHDSProcedure |  |  | EHDSProcedure |
supportingInformationEHDSMedicationAdministration |  |  | EHDSMedicationAdministration |
specimen |  | 0..* | EHDSSpecimen | Specimen
encounter |  | 0..1 | EHDSEncounter | Encounter
occurrence[x] |  | 0..1 |  | Occurrence
occurrenceDateTime |  |  | dateTime |
occurrencePeriod |  |  | Period |
patientInstructions |  | 0..1 | string | Patient instructions
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
EHDSServiceRequest.header.​language | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.serviceCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.reasonCode | Base | preferred |  | Not State | Unknown
EHDSServiceRequest.priority | Base | preferred |  | Not State | Unknown

This structure is derived from EHDSDataSet

Summary

Other representations of profile: CSV, Excel