EHDS Logical Information Models
0.2.1 - qa-preview

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

Logical Model: Observation model

Official URL: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSObservationCore Version: 0.2.1
Draft as of 2025-12-03 Computable Name: EHDSObservationCore

EHDS refined base model for Observation information

Usages:

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.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... header 1..1 Base Common header for all patient-related data
.... subject 1..1 EHDSPatient Patient/subject information
.... identifier 0..* Identifier Business identifier for the object
.... authorship 1..* Base Resource authoring details
..... author[x] 1..1 Author(s) by whom the resource was/were authored. Multiple authors could be provided.
...... authorEHDSHealthProfessional EHDSHealthProfessional
...... authorEHDSOrganisation EHDSOrganisation
...... authorEHDSDevice EHDSDevice
..... datetime 1..1 dateTime Date and time of authoring/issuing
.... lastUpdate 0..1 dateTime Date and time of the last update to the resource (may be used for technical corrections).
.... status 1..1 CodeableConcept Status of the resource or document
.... statusReason[x] 0..1 Reason for the current status of the resource.
..... statusReasonCodeableConcept CodeableConcept
..... statusReasonString string
.... language 0..1 CodeableConcept Language in which the resource is written. Language is expressed by the IETF language tag.
Binding Description: (preferred): BCP 47
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... result 0..1 Base 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.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
EHDSObservationCore.​header.language Base preferred Not State Unknown
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown

This structure is derived from EHDSDataSet

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... resultDescription 0..1 string Comments and narrative representation of the observation result and findings.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... header 1..1 Base Common header for all patient-related data
.... subject 1..1 EHDSPatient Patient/subject information
.... identifier 0..* Identifier Business identifier for the object
.... authorship 1..* Base Resource authoring details
..... author[x] 1..1 Author(s) by whom the resource was/were authored. Multiple authors could be provided.
...... authorEHDSHealthProfessional EHDSHealthProfessional
...... authorEHDSOrganisation EHDSOrganisation
...... authorEHDSDevice EHDSDevice
..... datetime 1..1 dateTime Date and time of authoring/issuing
.... lastUpdate 0..1 dateTime Date and time of the last update to the resource (may be used for technical corrections).
.... status 1..1 CodeableConcept Status of the resource or document
.... statusReason[x] 0..1 Reason for the current status of the resource.
..... statusReasonCodeableConcept CodeableConcept
..... statusReasonString string
.... language 0..1 CodeableConcept Language in which the resource is written. Language is expressed by the IETF language tag.
Binding Description: (preferred): BCP 47
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... result 0..1 Base 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.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
EHDSObservationCore.​header.language Base preferred Not State Unknown
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown

This structure is derived from EHDSDataSet

Summary

Mandatory: 0 element(5 nested mandatory elements)

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... header 1..1 Base Common header for all patient-related data
.... subject 1..1 EHDSPatient Patient/subject information
.... identifier 0..* Identifier Business identifier for the object
.... authorship 1..* Base Resource authoring details
..... author[x] 1..1 Author(s) by whom the resource was/were authored. Multiple authors could be provided.
...... authorEHDSHealthProfessional EHDSHealthProfessional
...... authorEHDSOrganisation EHDSOrganisation
...... authorEHDSDevice EHDSDevice
..... datetime 1..1 dateTime Date and time of authoring/issuing
.... lastUpdate 0..1 dateTime Date and time of the last update to the resource (may be used for technical corrections).
.... status 1..1 CodeableConcept Status of the resource or document
.... statusReason[x] 0..1 Reason for the current status of the resource.
..... statusReasonCodeableConcept CodeableConcept
..... statusReasonString string
.... language 0..1 CodeableConcept Language in which the resource is written. Language is expressed by the IETF language tag.
Binding Description: (preferred): BCP 47
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... result 0..1 Base 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.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
EHDSObservationCore.​header.language Base preferred Not State Unknown
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown

Differential View

This structure is derived from EHDSDataSet

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... resultDescription 0..1 string Comments and narrative representation of the observation result and findings.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. EHDSObservationCore 0..* EHDSDataSet Observation model

Elements defined in Ancestors:header
Instances of this logical model can be the target of a Reference
... header 1..1 Base Common header for all patient-related data
.... subject 1..1 EHDSPatient Patient/subject information
.... identifier 0..* Identifier Business identifier for the object
.... authorship 1..* Base Resource authoring details
..... author[x] 1..1 Author(s) by whom the resource was/were authored. Multiple authors could be provided.
...... authorEHDSHealthProfessional EHDSHealthProfessional
...... authorEHDSOrganisation EHDSOrganisation
...... authorEHDSDevice EHDSDevice
..... datetime 1..1 dateTime Date and time of authoring/issuing
.... lastUpdate 0..1 dateTime Date and time of the last update to the resource (may be used for technical corrections).
.... status 1..1 CodeableConcept Status of the resource or document
.... statusReason[x] 0..1 Reason for the current status of the resource.
..... statusReasonCodeableConcept CodeableConcept
..... statusReasonString string
.... language 0..1 CodeableConcept Language in which the resource is written. Language is expressed by the IETF language tag.
Binding Description: (preferred): BCP 47
... observationDate[x] 1..1 Clinically relevant time or time period for the observation
.... observationDateDateTime dateTime
.... observationDatePeriod Period
... code 1..1 CodeableConcept Observation code
Binding Description: (preferred): LOINC, NPU, SNOMED CT
... result 0..1 Base 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.
.... value[x] 1..1 Observation result value according to the type of observation
Binding Description: (preferred): UCUM for units, SNOMED CT for coded results
..... valueString string
..... valueQuantity Quantity
..... valueRange Range
..... valueCodeableConcept CodeableConcept
... anatomicLocation 0..1 EHDSBodyStructure Anatomic location and laterality where the observation was performed.
... specimen 0..* EHDSSpecimenCore Specimen information
... method 0..1 CodeableConcept Observation method
Binding Description: (preferred): SNOMED CT
... performer[x] 0..1 Performer of the observation. Some test could be performed by the patient himself or by a care giver. Those are in the scope of this deliverable under specified conditions.
.... performerEHDSHealthProfessional EHDSHealthProfessional
.... performerEHDSPatient EHDSPatient
.... performerEHDSRelatedPerson EHDSRelatedPerson
... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation
... component 0..* Base Component in case the observation consists of multiple sub-observations (e.g. blood pressure).
.... code 1..1 CodeableConcept Code representing the observation using the agreed code systems.
Binding Description: (preferred): LOINC, NPU, SNOMED CT
.... result 0..1 Base 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.
..... value[x] 1..1 Observation result value according to the type of observation
...... valueString string
...... valueQuantity Quantity
...... valueRange Range
...... valueCodeableConcept CodeableConcept
..... uncertainty 0..1 Base Measurement uncertainty type and interval if needed.
.... referenceRange 0..* Base Reference range, multiple reference ranges of different types culd by provided. Provides guide for interpretation of result.
.... interpretation 0..* CodeableConcept Information about reference intervals and result interpretation.
Binding Description: (preferred): SNOMED CT, HL7 ObservationInterpretation

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
EHDSObservationCore.​header.language Base preferred Not State Unknown
EHDSObservationCore.​code Base preferred Not State Unknown
EHDSObservationCore.​result.value[x] Base preferred Not State Unknown
EHDSObservationCore.​method Base preferred Not State Unknown
EHDSObservationCore.​interpretation Base preferred Not State Unknown
EHDSObservationCore.​component.code Base preferred Not State Unknown
EHDSObservationCore.​component.interpretation Base preferred Not State Unknown

This structure is derived from EHDSDataSet

Summary

Mandatory: 0 element(5 nested mandatory elements)

 

Other representations of profile: CSV, Excel