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: EHDSServiceRequest - Detailed Descriptions

Draft as of 2026-02-05

Definitions for the EHDSServiceRequest logical model.

Guidance on how to interpret the contents of this table can be foundhere

0. EHDSServiceRequest
Definition

EHDS refined base model for Specification of requested service or services


Base definition for all types defined in FHIR type system.

ShortService request modelBase for all types and resources
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSServiceRequest.header
Definition

Basic metadata for this information

ShortBasic metadata for this information
Control1..1
TypeBase
4. EHDSServiceRequest.header.subject
Definition

Patient/subject information

ShortPatient/subject information
Control1..1
Typehttp://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).

ShortBusiness identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
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.

ShortAuthor(s) responsible for the provided information.
Control0..*
TypeChoice 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] NoteSeeChoice of Data Typesfor further information about how to use [x]
10. EHDSServiceRequest.header.date
Definition

Date and optionally time of authoring/issuing

ShortDate and optionally time of authoring/issuing
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSServiceRequest.header.status
Definition

Status of the resource or document

ShortStatus of the resource or document
Control1..1
TypeCodeableConcept
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.

ShortSource 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.
Control0..1
TypeCodeableConcept
16. EHDSServiceRequest.header.language
Definition

Language in which the resource is written. Language is expressed by the IETF language tag.

ShortLanguage in which the resource is written. Language is expressed by the IETF language tag.
Control0..1
Binding

BCP 47

TypeCodeableConcept
18. EHDSServiceRequest.serviceText
Definition

Textual description of the requested service

ShortService text
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
20. EHDSServiceRequest.serviceCode
Definition

A code that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested.

ShortService code
Control0..1
Binding

LOINC, NPU, SNOMED CT

TypeCodeableConcept
22. EHDSServiceRequest.reasonCode
Definition

Health conditions affecting the health of the patient and are important to be known for a health professional during a health encounter. Clinical conditions of the subject relevant for the results interpretation.

ShortReason code
Control0..*
Binding

ICD-10 (ICD-11 when available), SNOMED CT, Orphacode

TypeCodeableConcept
24. EHDSServiceRequest.quantity
Definition

Amount of requested services of the same type

ShortQuantity
Control0..1
TypeQuantity
26. EHDSServiceRequest.bodySite
Definition

Anatomic location and laterality where the procedure should be performed. This is the target site.

ShortAnatomic location
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure
28. EHDSServiceRequest.reasonReference[x]
Definition

Indicates another resource that provides a justification for why this service is being requested.

ShortReason reference
Control0..*
TypeChoice 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
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
30. EHDSServiceRequest.priority
Definition

Indicates how quickly the ServiceRequest should be addressed with respect to other requests.

ShortPriority
Control0..1
Binding

HL7 Request priority

TypeCodeableConcept
32. EHDSServiceRequest.supportingInformation[x]
Definition

Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc.

ShortSupporting information
Control0..*
TypeChoice 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] NoteSeeChoice of Data Typesfor further information about how to use [x]
34. EHDSServiceRequest.specimen
Definition

Specimens to be used by the laboratory procedure

ShortSpecimen
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen
36. EHDSServiceRequest.encounter
Definition

An encounter that provides additional information about the healthcare context in which this request is made.

ShortEncounter
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter
38. EHDSServiceRequest.occurrence[x]
Definition

When service should occur

ShortOccurrence
Control0..1
TypeChoice of: dateTime, Period
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
40. EHDSServiceRequest.patientInstructions
Definition

Patient or consumer-oriented instructions

ShortPatient instructions
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
42. EHDSServiceRequest.coverage
Definition

Insurance or medical plan or a payment agreement.

ShortCoverage
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCoverage

Guidance on how to interpret the contents of this table can be foundhere

0. EHDSServiceRequest
Definition

EHDS refined base model for Specification of requested service or services

ShortService request model
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSServiceRequest.serviceText
Definition

Textual description of the requested service

ShortService text
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
4. EHDSServiceRequest.serviceCode
Definition

A code that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested.

ShortService code
Control0..1
Binding

LOINC, NPU, SNOMED CT

TypeCodeableConcept
6. EHDSServiceRequest.reasonCode
Definition

Health conditions affecting the health of the patient and are important to be known for a health professional during a health encounter. Clinical conditions of the subject relevant for the results interpretation.

ShortReason code
Control0..*
Binding

ICD-10 (ICD-11 when available), SNOMED CT, Orphacode

TypeCodeableConcept
8. EHDSServiceRequest.quantity
Definition

Amount of requested services of the same type

ShortQuantity
Control0..1
TypeQuantity
10. EHDSServiceRequest.bodySite
Definition

Anatomic location and laterality where the procedure should be performed. This is the target site.

ShortAnatomic location
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure
12. EHDSServiceRequest.reasonReference[x]
Definition

Indicates another resource that provides a justification for why this service is being requested.

ShortReason reference
Control0..*
TypeChoice 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
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
14. EHDSServiceRequest.priority
Definition

Indicates how quickly the ServiceRequest should be addressed with respect to other requests.

ShortPriority
Control0..1
Binding

HL7 Request priority

TypeCodeableConcept
16. EHDSServiceRequest.supportingInformation[x]
Definition

Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc.

ShortSupporting information
Control0..*
TypeChoice 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] NoteSeeChoice of Data Typesfor further information about how to use [x]
18. EHDSServiceRequest.specimen
Definition

Specimens to be used by the laboratory procedure

ShortSpecimen
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen
20. EHDSServiceRequest.encounter
Definition

An encounter that provides additional information about the healthcare context in which this request is made.

ShortEncounter
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter
22. EHDSServiceRequest.occurrence[x]
Definition

When service should occur

ShortOccurrence
Control0..1
TypeChoice of: dateTime, Period
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
24. EHDSServiceRequest.patientInstructions
Definition

Patient or consumer-oriented instructions

ShortPatient instructions
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
26. EHDSServiceRequest.coverage
Definition

Insurance or medical plan or a payment agreement.

ShortCoverage
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCoverage

Guidance on how to interpret the contents of this table can be foundhere

0. EHDSServiceRequest
Definition

EHDS refined base model for Specification of requested service or services

ShortService request model
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
2. EHDSServiceRequest.header
Definition

Basic metadata for this information

ShortBasic metadata for this information
Control1..1
TypeBase
4. EHDSServiceRequest.header.subject
Definition

Patient/subject information

ShortPatient/subject information
Control1..1
Typehttp://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).

ShortBusiness identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
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.

ShortAuthor(s) responsible for the provided information.
Control0..*
TypeChoice 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] NoteSeeChoice of Data Typesfor further information about how to use [x]
10. EHDSServiceRequest.header.date
Definition

Date and optionally time of authoring/issuing

ShortDate and optionally time of authoring/issuing
Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. EHDSServiceRequest.header.status
Definition

Status of the resource or document

ShortStatus of the resource or document
Control1..1
TypeCodeableConcept
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.

ShortSource 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.
Control0..1
TypeCodeableConcept
16. EHDSServiceRequest.header.language
Definition

Language in which the resource is written. Language is expressed by the IETF language tag.

ShortLanguage in which the resource is written. Language is expressed by the IETF language tag.
Control0..1
Binding

BCP 47

TypeCodeableConcept
18. EHDSServiceRequest.serviceText
Definition

Textual description of the requested service

ShortService text
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
20. EHDSServiceRequest.serviceCode
Definition

A code that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that have been requested.

ShortService code
Control0..1
Binding

LOINC, NPU, SNOMED CT

TypeCodeableConcept
22. EHDSServiceRequest.reasonCode
Definition

Health conditions affecting the health of the patient and are important to be known for a health professional during a health encounter. Clinical conditions of the subject relevant for the results interpretation.

ShortReason code
Control0..*
Binding

ICD-10 (ICD-11 when available), SNOMED CT, Orphacode

TypeCodeableConcept
24. EHDSServiceRequest.quantity
Definition

Amount of requested services of the same type

ShortQuantity
Control0..1
TypeQuantity
26. EHDSServiceRequest.bodySite
Definition

Anatomic location and laterality where the procedure should be performed. This is the target site.

ShortAnatomic location
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure
28. EHDSServiceRequest.reasonReference[x]
Definition

Indicates another resource that provides a justification for why this service is being requested.

ShortReason reference
Control0..*
TypeChoice 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
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
30. EHDSServiceRequest.priority
Definition

Indicates how quickly the ServiceRequest should be addressed with respect to other requests.

ShortPriority
Control0..1
Binding

HL7 Request priority

TypeCodeableConcept
32. EHDSServiceRequest.supportingInformation[x]
Definition

Health conditions relevant for the results interpretation, e.g. fasting status, sex for clinical use, etc.

ShortSupporting information
Control0..*
TypeChoice 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] NoteSeeChoice of Data Typesfor further information about how to use [x]
34. EHDSServiceRequest.specimen
Definition

Specimens to be used by the laboratory procedure

ShortSpecimen
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSSpecimen
36. EHDSServiceRequest.encounter
Definition

An encounter that provides additional information about the healthcare context in which this request is made.

ShortEncounter
Control0..1
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSEncounter
38. EHDSServiceRequest.occurrence[x]
Definition

When service should occur

ShortOccurrence
Control0..1
TypeChoice of: dateTime, Period
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
40. EHDSServiceRequest.patientInstructions
Definition

Patient or consumer-oriented instructions

ShortPatient instructions
Control0..1
Typestring
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
42. EHDSServiceRequest.coverage
Definition

Insurance or medical plan or a payment agreement.

ShortCoverage
Control0..*
Typehttp://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSCoverage