EHDS Logical Information Models
0.4.0 - draft
EHDS Logical Information Models
0.4.0 - draft
EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.4.0 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
| Draft as of 2026-02-23 |
Definitions for the EHDSServiceRequest logical model.
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSServiceRequest | |
| Definition | The model covers details about a requested service or services. One order may include several requests. Base definition for all types defined in FHIR type system. |
| Short | Service request modelBase for all types and resources |
| Control | 0..* |
| Is Modifier | false |
| Logical Model | Instances of this logical model are not marked to be the target of a Reference |
| 2. EHDSServiceRequest.header | |
| Definition | Basic metadata for this information |
| Short | Basic metadata for this information |
| Control | 1..1 |
| Type | Base |
| 4. EHDSServiceRequest.header.subject | |
| Definition | Patient/subject information |
| Short | Patient/subject information |
| Control | 1..1 |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient |
| 6. EHDSServiceRequest.header.identifier | |
| Definition | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries). |
| Short | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries). |
| Note | This is a business identifier, not a resource identifier (see discussion) |
| Control | 0..* |
| Type | Identifier |
| 8. EHDSServiceRequest.header.author[x] | |
| Definition | Author(s) responsible for the provided information. The exact role of the responsible author varies across use cases and is specific to individual models. |
| Short | Author(s) responsible for the provided information. |
| Control | 0..* |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| 10. EHDSServiceRequest.header.date | |
| Definition | Date and optionally time of authoring/issuing |
| Short | Date and optionally time of authoring/issuing |
| Control | 0..1 |
| Type | dateTime |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 12. EHDSServiceRequest.header.status | |
| Definition | Status of the resource or document |
| Short | Status of the resource or document |
| Control | 1..1 |
| Type | CodeableConcept |
| 14. EHDSServiceRequest.header.source | |
| Definition | 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. |
| Short | 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. |
| Control | 0..1 |
| Type | CodeableConcept |
| 16. EHDSServiceRequest.header.language | |
| Definition | Language in which the resource is written. Language is expressed by the IETF language tag. |
| Short | Language in which the resource is written. Language is expressed by the IETF language tag. |
| Control | 0..1 |
| Binding | BCP 47 |
| Type | CodeableConcept |
| 18. EHDSServiceRequest.description | |
| Definition | Textual description of the requested service |
| Short | Textual description of the requested service |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 20. EHDSServiceRequest.code | |
| Definition | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Short | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Control | 0..1 |
| Binding | LOINC, NPU, SNOMED CT |
| Type | CodeableConcept |
| 22. EHDSServiceRequest.quantity | |
| Definition | Amount of requested services of the same type |
| Short | Amount of requested services of the same type |
| Control | 0..1 |
| Type | Quantity |
| 24. EHDSServiceRequest.bodySite | |
| Definition | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Short | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure |
| 26. EHDSServiceRequest.reason[x] | |
| Definition | Reason why this service is being requested. |
| Short | Reason why this service is being requested. |
| Control | 0..* |
| Binding | ICD-10, SNOMED CT, Orphacode |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedication, string |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 28. EHDSServiceRequest.priority | |
| Definition | Indicates how quickly the request should be addressed with respect to other requests. |
| Short | Indicates how quickly the request should be addressed with respect to other requests. |
| Control | 0..1 |
| Binding | HL7 Request Priority |
| Type | CodeableConcept |
| 30. EHDSServiceRequest.supportingInformation[x] | |
| Definition | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Short | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Control | 0..* |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedicationAdministration |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| 32. EHDSServiceRequest.specimen | |
| Definition | Specimens to be used by the laboratory procedure |
| Short | Specimens to be used by the laboratory procedure |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen |
| 34. EHDSServiceRequest.encounter | |
| Definition | The encounter that provides additional information about the healthcare context in which this request is made. |
| Short | The encounter that provides additional information about the healthcare context in which this request is made. |
| Control | 0..1 |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter |
| 36. EHDSServiceRequest.occurrence[x] | |
| Definition | Expected time of the service |
| Short | Expected time of the service |
| Control | 0..1 |
| Type | Choice of: dateTime, Period |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 38. EHDSServiceRequest.patientInstructions | |
| Definition | Patient or consumer-oriented instructions |
| Short | Patient or consumer-oriented instructions |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSServiceRequest | |
| Definition | The model covers details about a requested service or services. One order may include several requests. |
| Short | Service request model |
| Logical Model | Instances of this logical model are not marked to be the target of a Reference |
| 2. EHDSServiceRequest.description | |
| Definition | Textual description of the requested service |
| Short | Textual description of the requested service |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 4. EHDSServiceRequest.code | |
| Definition | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Short | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Control | 0..1 |
| Binding | LOINC, NPU, SNOMED CT |
| Type | CodeableConcept |
| 6. EHDSServiceRequest.quantity | |
| Definition | Amount of requested services of the same type |
| Short | Amount of requested services of the same type |
| Control | 0..1 |
| Type | Quantity |
| 8. EHDSServiceRequest.bodySite | |
| Definition | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Short | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure |
| 10. EHDSServiceRequest.reason[x] | |
| Definition | Reason why this service is being requested. |
| Short | Reason why this service is being requested. |
| Control | 0..* |
| Binding | ICD-10, SNOMED CT, Orphacode |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedication, string |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 12. EHDSServiceRequest.priority | |
| Definition | Indicates how quickly the request should be addressed with respect to other requests. |
| Short | Indicates how quickly the request should be addressed with respect to other requests. |
| Control | 0..1 |
| Binding | HL7 Request Priority |
| Type | CodeableConcept |
| 14. EHDSServiceRequest.supportingInformation[x] | |
| Definition | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Short | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Control | 0..* |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedicationAdministration |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| 16. EHDSServiceRequest.specimen | |
| Definition | Specimens to be used by the laboratory procedure |
| Short | Specimens to be used by the laboratory procedure |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen |
| 18. EHDSServiceRequest.encounter | |
| Definition | The encounter that provides additional information about the healthcare context in which this request is made. |
| Short | The encounter that provides additional information about the healthcare context in which this request is made. |
| Control | 0..1 |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter |
| 20. EHDSServiceRequest.occurrence[x] | |
| Definition | Expected time of the service |
| Short | Expected time of the service |
| Control | 0..1 |
| Type | Choice of: dateTime, Period |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 22. EHDSServiceRequest.patientInstructions | |
| Definition | Patient or consumer-oriented instructions |
| Short | Patient or consumer-oriented instructions |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSServiceRequest | |
| Definition | The model covers details about a requested service or services. One order may include several requests. |
| Short | Service request model |
| Control | 0..* |
| Is Modifier | false |
| Logical Model | Instances of this logical model are not marked to be the target of a Reference |
| 2. EHDSServiceRequest.header | |
| Definition | Basic metadata for this information |
| Short | Basic metadata for this information |
| Control | 1..1 |
| Type | Base |
| 4. EHDSServiceRequest.header.subject | |
| Definition | Patient/subject information |
| Short | Patient/subject information |
| Control | 1..1 |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient |
| 6. EHDSServiceRequest.header.identifier | |
| Definition | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries). |
| Short | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries). |
| Note | This is a business identifier, not a resource identifier (see discussion) |
| Control | 0..* |
| Type | Identifier |
| 8. EHDSServiceRequest.header.author[x] | |
| Definition | Author(s) responsible for the provided information. The exact role of the responsible author varies across use cases and is specific to individual models. |
| Short | Author(s) responsible for the provided information. |
| Control | 0..* |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| 10. EHDSServiceRequest.header.date | |
| Definition | Date and optionally time of authoring/issuing |
| Short | Date and optionally time of authoring/issuing |
| Control | 0..1 |
| Type | dateTime |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 12. EHDSServiceRequest.header.status | |
| Definition | Status of the resource or document |
| Short | Status of the resource or document |
| Control | 1..1 |
| Type | CodeableConcept |
| 14. EHDSServiceRequest.header.source | |
| Definition | 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. |
| Short | 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. |
| Control | 0..1 |
| Type | CodeableConcept |
| 16. EHDSServiceRequest.header.language | |
| Definition | Language in which the resource is written. Language is expressed by the IETF language tag. |
| Short | Language in which the resource is written. Language is expressed by the IETF language tag. |
| Control | 0..1 |
| Binding | BCP 47 |
| Type | CodeableConcept |
| 18. EHDSServiceRequest.description | |
| Definition | Textual description of the requested service |
| Short | Textual description of the requested service |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 20. EHDSServiceRequest.code | |
| Definition | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Short | A code and name that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested. |
| Control | 0..1 |
| Binding | LOINC, NPU, SNOMED CT |
| Type | CodeableConcept |
| 22. EHDSServiceRequest.quantity | |
| Definition | Amount of requested services of the same type |
| Short | Amount of requested services of the same type |
| Control | 0..1 |
| Type | Quantity |
| 24. EHDSServiceRequest.bodySite | |
| Definition | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Short | Anatomic location and laterality where the procedure should be performed. This is the target site. |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure |
| 26. EHDSServiceRequest.reason[x] | |
| Definition | Reason why this service is being requested. |
| Short | Reason why this service is being requested. |
| Control | 0..* |
| Binding | ICD-10, SNOMED CT, Orphacode |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedication, string |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 28. EHDSServiceRequest.priority | |
| Definition | Indicates how quickly the request should be addressed with respect to other requests. |
| Short | Indicates how quickly the request should be addressed with respect to other requests. |
| Control | 0..1 |
| Binding | HL7 Request Priority |
| Type | CodeableConcept |
| 30. EHDSServiceRequest.supportingInformation[x] | |
| Definition | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Short | Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc. |
| Control | 0..* |
| Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservation, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCondition, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSProcedure, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSMedicationAdministration |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| 32. EHDSServiceRequest.specimen | |
| Definition | Specimens to be used by the laboratory procedure |
| Short | Specimens to be used by the laboratory procedure |
| Control | 0..* |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen |
| 34. EHDSServiceRequest.encounter | |
| Definition | The encounter that provides additional information about the healthcare context in which this request is made. |
| Short | The encounter that provides additional information about the healthcare context in which this request is made. |
| Control | 0..1 |
| Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter |
| 36. EHDSServiceRequest.occurrence[x] | |
| Definition | Expected time of the service |
| Short | Expected time of the service |
| Control | 0..1 |
| Type | Choice of: dateTime, Period |
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
| 38. EHDSServiceRequest.patientInstructions | |
| Definition | Patient or consumer-oriented instructions |
| Short | Patient or consumer-oriented instructions |
| Control | 0..1 |
| Type | string |
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension |
IG © 2022+ Xt-EHR. Package xtehr.eu.ehds.models#0.4.0 based on FHIR 5.0.0. Generated 2026-02-23
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The Xt-EHR action is co-funded by the European Union, EU4Health Program 2021-2027, under Grant Agreement Nr.ยบ 101128085.
