HL7 Europe Imaging Report R4, published by HL7 Europe. This guide is not an authorized publication; it is the continuous build for version 0.1.1-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/imaging-r4/ and changes regularly. See the Directory of published versions
| Draft as of 2025-08-05 | 
Definitions for the EHDSObservation logical model
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSObservation | |
| Definition | EHDS refined base model for Observation information | 
| Short | Observation model | 
| Control | 0..* | 
| Is Modifier | false | 
| Logical Model | Instances of this logical model are not marked to be the target of a Reference | 
| 2. EHDSObservation.header | |
| Definition | Common header for all patient-related data | 
| Short | Common header for all patient-related data | 
| Control | 1..1 | 
| Type | Base | 
| 4. EHDSObservation.header.subject | |
| Definition | Patient/subject information | 
| Short | Patient who is receiving health care. This patient might be different from the direct subject of the observation. | 
| Control | 1..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatient | 
| 6. EHDSObservation.header.identifier | |
| Definition | Business identifier for the object | 
| Short | Business identifier for the object | 
| Note | This is a business identifier, not a resource identifier (see discussion) | 
| Control | 0..* | 
| Type | Identifier | 
| 8. EHDSObservation.header.authorship | |
| Definition | Resource authoring details | 
| Short | Authorship | 
| Control | 1..* | 
| Type | Base | 
| 10. EHDSObservation.header.authorship.author[x] | |
| Definition | Author(s) by whom the resource was/were authored. Multiple authors could be provided. | 
| Short | Author | 
| Control | 1..1 | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSOrganisation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDevice | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 12. EHDSObservation.header.authorship.datetime | |
| Definition | Date and time of the issuing the document/resource by its author. | 
| Short | Date and time of authoring/issuing | 
| Control | 1..1 | 
| Type | dateTime | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 14. EHDSObservation.header.lastUpdate | |
| Definition | Date and time of the last update to the document/information | 
| Short | Date and time of the last update to the resource | 
| Control | 0..1 | 
| Type | dateTime | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 16. EHDSObservation.header.status | |
| Definition | Status of the resource | 
| Short | Status of the resource | 
| Control | 1..1 | 
| Binding | HL7 Observation status | 
| Type | CodeableConcept | 
| 18. EHDSObservation.header.statusReason[x] | |
| Definition | Reason for the current status of the resource. | 
| Short | Reason for the current status of the resource. | 
| Control | 0..1 | 
| Type | Choice of: CodeableConcept, 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 | 
| 20. EHDSObservation.header.language | |
| Definition | Language in which the resource is written. Language is expressed by the IETF language tag. | 
| Short | Language | 
| Control | 0..1 | 
| Binding | BCP 47 | 
| Type | CodeableConcept | 
| 22. EHDSObservation.header.version | |
| Definition | Business version of the resource. | 
| Short | Version | 
| Note | This is a business version Id, not a resource version Id (see discussion) | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 24. EHDSObservation.presentedForm | |
| Definition | A narrative easy-to-read representation of the full data set, e.g. PDF-version of a document | 
| Short | A narrative easy-to-read representation of the full data set, e.g. PDF-version of a document | 
| Control | 0..* | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSAttachment | 
| 26. EHDSObservation.header.directSubject[x] | |
| Definition | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Short | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Control | 0..1 | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatient, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatientAnimal, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLocation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDevice, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSOrganisation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSProcedure | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 28. EHDSObservation.observationDate[x] | |
| Definition | Clinically relevant time or time period for the observation | 
| Short | Clinically relevant time or time period for the observation | 
| Control | 1..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 | 
| 30. EHDSObservation.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Observation code | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 32. EHDSObservation.originalName | |
| Definition | Original (conventional) name of the observation | 
| Short | Original (conventional) name of the observation | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 34. EHDSObservation.method | |
| Definition | Observation method (measurement principle) to obtain the result. | 
| Short | Observation method | 
| Control | 0..1 | 
| Binding | SNOMED CT | 
| Type | CodeableConcept | 
| 36. EHDSObservation.order | |
| Definition | Identifies order and order placer this observation belongs to | 
| Short | Identifies order and order placer this observation belongs to | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSServiceRequest | 
| 38. EHDSObservation.performer | |
| Definition | Performer | 
| Short | Performer | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional | 
| 40. EHDSObservation.anatomicLocation | |
| Definition | Anatomic location and laterality where the observation was performed. | 
| Short | Anatomic location and laterality where the observation was performed. | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSBodyStructure | 
| 42. EHDSObservation.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 44. EHDSObservation.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Binding | UCUM for units, SNOMED CT for coded results | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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 | 
| 46. EHDSObservation.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 48. EHDSObservation.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 50. EHDSObservation.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 52. EHDSObservation.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 54. EHDSObservation.resultDescription | |
| Definition | Comments and narrative representation of the observation result and findings. | 
| Short | Comments and narrative representation of the observation result and findings. | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 56. EHDSObservation.component | |
| Definition | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Short | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Control | 0..* | 
| Type | Base | 
| 58. EHDSObservation.component.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Code representing the observation using the agreed code systems. | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 60. EHDSObservation.component.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 62. EHDSObservation.component.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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 | 
| 64. EHDSObservation.component.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 66. EHDSObservation.component.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 68. EHDSObservation.component.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 70. EHDSObservation.component.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 72. EHDSObservation.derivedFrom[x] | |
| Definition | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Short | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSImagingStudy | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 74. EHDSObservation.triggeredBy[x] | |
| Definition | References to the observation(s) that triggered the performance of this observation. | 
| Short | References to the observation(s) that triggered the performance of this observation. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 76. EHDSObservation.hasMember[x] | |
| Definition | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Short | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSObservation | |
| Definition | EHDS refined base model for Observation information | 
| Short | Observation model | 
| Logical Model | Instances of this logical model are not marked to be the target of a Reference | 
| 2. EHDSObservation.header | |
| 4. EHDSObservation.header.subject | |
| Short | Patient who is receiving health care. This patient might be different from the direct subject of the observation. | 
| 6. EHDSObservation.header.status | |
| Binding | HL7 Observation status | 
| 8. EHDSObservation.header.directSubject[x] | |
| Definition | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Short | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Control | 0..1 | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatient, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatientAnimal, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLocation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDevice, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSOrganisation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSProcedure | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 10. EHDSObservation.observationDate[x] | |
| Definition | Clinically relevant time or time period for the observation | 
| Short | Clinically relevant time or time period for the observation | 
| Control | 1..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 | 
| 12. EHDSObservation.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Observation code | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 14. EHDSObservation.originalName | |
| Definition | Original (conventional) name of the observation | 
| Short | Original (conventional) name of the observation | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 16. EHDSObservation.method | |
| Definition | Observation method (measurement principle) to obtain the result. | 
| Short | Observation method | 
| Control | 0..1 | 
| Binding | SNOMED CT | 
| Type | CodeableConcept | 
| 18. EHDSObservation.order | |
| Definition | Identifies order and order placer this observation belongs to | 
| Short | Identifies order and order placer this observation belongs to | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSServiceRequest | 
| 20. EHDSObservation.performer | |
| Definition | Performer | 
| Short | Performer | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional | 
| 22. EHDSObservation.anatomicLocation | |
| Definition | Anatomic location and laterality where the observation was performed. | 
| Short | Anatomic location and laterality where the observation was performed. | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSBodyStructure | 
| 24. EHDSObservation.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 26. EHDSObservation.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Binding | UCUM for units, SNOMED CT for coded results | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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. EHDSObservation.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 30. EHDSObservation.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 32. EHDSObservation.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 34. EHDSObservation.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 36. EHDSObservation.resultDescription | |
| Definition | Comments and narrative representation of the observation result and findings. | 
| Short | Comments and narrative representation of the observation result and findings. | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 38. EHDSObservation.component | |
| Definition | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Short | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Control | 0..* | 
| Type | Base | 
| 40. EHDSObservation.component.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Code representing the observation using the agreed code systems. | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 42. EHDSObservation.component.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 44. EHDSObservation.component.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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 | 
| 46. EHDSObservation.component.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 48. EHDSObservation.component.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 50. EHDSObservation.component.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 52. EHDSObservation.component.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 54. EHDSObservation.derivedFrom[x] | |
| Definition | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Short | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSImagingStudy | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 56. EHDSObservation.triggeredBy[x] | |
| Definition | References to the observation(s) that triggered the performance of this observation. | 
| Short | References to the observation(s) that triggered the performance of this observation. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 58. EHDSObservation.hasMember[x] | |
| Definition | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Short | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
Guidance on how to interpret the contents of this table can be foundhere
| 0. EHDSObservation | |
| Definition | EHDS refined base model for Observation information | 
| Short | Observation model | 
| Control | 0..* | 
| Is Modifier | false | 
| Logical Model | Instances of this logical model are not marked to be the target of a Reference | 
| 2. EHDSObservation.header | |
| Definition | Common header for all patient-related data | 
| Short | Common header for all patient-related data | 
| Control | 1..1 | 
| Type | Base | 
| 4. EHDSObservation.header.subject | |
| Definition | Patient/subject information | 
| Short | Patient who is receiving health care. This patient might be different from the direct subject of the observation. | 
| Control | 1..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatient | 
| 6. EHDSObservation.header.identifier | |
| Definition | Business identifier for the object | 
| Short | Business identifier for the object | 
| Note | This is a business identifier, not a resource identifier (see discussion) | 
| Control | 0..* | 
| Type | Identifier | 
| 8. EHDSObservation.header.authorship | |
| Definition | Resource authoring details | 
| Short | Authorship | 
| Control | 1..* | 
| Type | Base | 
| 10. EHDSObservation.header.authorship.author[x] | |
| Definition | Author(s) by whom the resource was/were authored. Multiple authors could be provided. | 
| Short | Author | 
| Control | 1..1 | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSOrganisation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDevice | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 12. EHDSObservation.header.authorship.datetime | |
| Definition | Date and time of the issuing the document/resource by its author. | 
| Short | Date and time of authoring/issuing | 
| Control | 1..1 | 
| Type | dateTime | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 14. EHDSObservation.header.lastUpdate | |
| Definition | Date and time of the last update to the document/information | 
| Short | Date and time of the last update to the resource | 
| Control | 0..1 | 
| Type | dateTime | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 16. EHDSObservation.header.status | |
| Definition | Status of the resource | 
| Short | Status of the resource | 
| Control | 1..1 | 
| Binding | HL7 Observation status | 
| Type | CodeableConcept | 
| 18. EHDSObservation.header.statusReason[x] | |
| Definition | Reason for the current status of the resource. | 
| Short | Reason for the current status of the resource. | 
| Control | 0..1 | 
| Type | Choice of: CodeableConcept, 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 | 
| 20. EHDSObservation.header.language | |
| Definition | Language in which the resource is written. Language is expressed by the IETF language tag. | 
| Short | Language | 
| Control | 0..1 | 
| Binding | BCP 47 | 
| Type | CodeableConcept | 
| 22. EHDSObservation.header.version | |
| Definition | Business version of the resource. | 
| Short | Version | 
| Note | This is a business version Id, not a resource version Id (see discussion) | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 24. EHDSObservation.presentedForm | |
| Definition | A narrative easy-to-read representation of the full data set, e.g. PDF-version of a document | 
| Short | A narrative easy-to-read representation of the full data set, e.g. PDF-version of a document | 
| Control | 0..* | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSAttachment | 
| 26. EHDSObservation.header.directSubject[x] | |
| Definition | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Short | The direct subject of the observation if different from the patient (subject of care), e.g. an observation of an implanted device | 
| Control | 0..1 | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatient, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSPatientAnimal, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLocation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDevice, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSOrganisation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSProcedure | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 28. EHDSObservation.observationDate[x] | |
| Definition | Clinically relevant time or time period for the observation | 
| Short | Clinically relevant time or time period for the observation | 
| Control | 1..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 | 
| 30. EHDSObservation.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Observation code | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 32. EHDSObservation.originalName | |
| Definition | Original (conventional) name of the observation | 
| Short | Original (conventional) name of the observation | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 34. EHDSObservation.method | |
| Definition | Observation method (measurement principle) to obtain the result. | 
| Short | Observation method | 
| Control | 0..1 | 
| Binding | SNOMED CT | 
| Type | CodeableConcept | 
| 36. EHDSObservation.order | |
| Definition | Identifies order and order placer this observation belongs to | 
| Short | Identifies order and order placer this observation belongs to | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSServiceRequest | 
| 38. EHDSObservation.performer | |
| Definition | Performer | 
| Short | Performer | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSHealthProfessional | 
| 40. EHDSObservation.anatomicLocation | |
| Definition | Anatomic location and laterality where the observation was performed. | 
| Short | Anatomic location and laterality where the observation was performed. | 
| Control | 0..1 | 
| Type | https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSBodyStructure | 
| 42. EHDSObservation.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 44. EHDSObservation.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Binding | UCUM for units, SNOMED CT for coded results | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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 | 
| 46. EHDSObservation.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 48. EHDSObservation.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 50. EHDSObservation.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 52. EHDSObservation.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 54. EHDSObservation.resultDescription | |
| Definition | Comments and narrative representation of the observation result and findings. | 
| Short | Comments and narrative representation of the observation result and findings. | 
| Control | 0..1 | 
| Type | string | 
| Primitive Value | This primitive element may be present, or absent, or replaced by an extension | 
| 56. EHDSObservation.component | |
| Definition | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Short | Component in case the observation consists of multiple sub-observations (e.g. blood pressure). | 
| Control | 0..* | 
| Type | Base | 
| 58. EHDSObservation.component.code | |
| Definition | Code representing the observation using the agreed code systems. | 
| Short | Code representing the observation using the agreed code systems. | 
| Control | 1..1 | 
| Binding | LOINC, NPU, SNOMED CT | 
| Type | CodeableConcept | 
| 60. EHDSObservation.component.result | |
| Definition | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Short | Result of the observation including text, numeric and coded results of the measurement and measurement uncertainty. Content of the observation result will vary according to the type of the observation. | 
| Control | 0..1 | 
| Type | Base | 
| 62. EHDSObservation.component.result.value[x] | |
| Definition | Observation result value according to the type of observation | 
| Short | Observation result value according to the type of observation | 
| Control | 1..1 | 
| Type | Choice of: string, Quantity, Range, CodeableConcept | 
| [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 | 
| 64. EHDSObservation.component.result.uncertainty | |
| Definition | Measurement uncertainty type and interval if needed. | 
| Short | Measurement uncertainty type and interval if needed. | 
| Control | 0..1 | 
| Type | Base | 
| 66. EHDSObservation.component.dataAbsentReason | |
| Definition | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Short | Provides a reason why the expected value in the element Observation.value[x] is missing. | 
| Control | 0..1 | 
| Binding | HL7 Data absent reason | 
| Type | CodeableConcept | 
| 68. EHDSObservation.component.referenceRange | |
| Definition | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Short | Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result. | 
| Comments | Reference ranges are usually implied only for a numeric scale type. Use of the same units for reference range and value is implied. | 
| Control | 0..* | 
| Type | Base | 
| 70. EHDSObservation.component.interpretation | |
| Definition | Information about reference intervals and result interpretation. | 
| Short | Information about reference intervals and result interpretation. | 
| Control | 0..* | 
| Binding | SNOMED CT, HL7 ObservationInterpretation | 
| Type | CodeableConcept | 
| 72. EHDSObservation.derivedFrom[x] | |
| Definition | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Short | Reference to the related resource from which the observation has been made. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSImagingStudy | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 74. EHDSObservation.triggeredBy[x] | |
| Definition | References to the observation(s) that triggered the performance of this observation. | 
| Short | References to the observation(s) that triggered the performance of this observation. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] | 
| 76. EHDSObservation.hasMember[x] | |
| Definition | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Short | This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. | 
| Control | 0..* | 
| Type | Choice of: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSLaboratoryObservation, https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSObservation | 
| [x] Note | SeeChoice of Data Typesfor further information about how to use [x] |