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

## Logical Model: EHDSDocument - Detailed Descriptions

Draft as of 2026-02-23

Definitions for the EHDSDocument logical model.

- Key Elements Table
- Differential Elements Table
- Snapshot Elements Table

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

0. EHDSDocument
Definition | Model for common document data elements, including the common header. Data relevant to document type and its content for administrative and searching purposes. Base definition for all types defined in FHIR type system.
Short | Document 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. EHDSDocument.header
Definition | Basic metadata for this information
Short | Document header
Control | 1..1
Type | Base
4. EHDSDocument.header.subject
Definition | Patient/subject information
Short | Patient/subject information
Control | 1..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient
6. EHDSDocument.header.identifier
Definition | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
Short | Unique identifier of the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..*
Type | Identifier
8. EHDSDocument.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) of the document
Control | 1..*
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. EHDSDocument.header.date
Definition | Date and optionally time of authoring/issuing
Short | Date of finalising/issuing the document
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
12. EHDSDocument.header.status
Definition | Status of the resource or document
Short | Status of the document
Control | 1..1
Type | CodeableConcept
14. EHDSDocument.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..0
Type | CodeableConcept
16. EHDSDocument.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. EHDSDocument.header.documentType
Definition | Type of document at hand, e.g. 60591-5 Patient summary document.
Short | Type of document at hand, e.g. 60591-5 Patient summary document.
Control | 1..1
Binding | LOINC
Type | CodeableConcept
20. EHDSDocument.header.documentTitle
Definition | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Short | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Control | 1..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
22. EHDSDocument.header.period
Definition | Time of service that is being documented
Short | Time of service that is being documented
Control | 0..1
Type | Period
24. EHDSDocument.header.version
Definition | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
Short | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
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
26. EHDSDocument.header.attestation
Definition | Document attestation details
Short | Document attestation details
Control | 0..*
Type | Base
28. EHDSDocument.header.attestation.attester[x]
Definition | Attester who validated the document
Short | Attester who validated the document
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
30. EHDSDocument.header.attestation.datetime
Definition | Date and time of the approval of the document by Attester
Short | Date and time of the approval of the document by Attester
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
32. EHDSDocument.header.legalAuthentication
Definition | Document legal authentication details
Short | Document legal authentication details
Control | 0..*
Type | Base
34. EHDSDocument.header.legalAuthentication.legalAuthenticator[x]
Definition | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Short | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
36. EHDSDocument.header.legalAuthentication.datetime
Definition | Date and time when the document was authorised
Short | Date and time when the document was authorised
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
38. EHDSDocument.header.eventType
Definition | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Short | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Control | 0..*
Binding | LOINC, SNOMED CT, dicom-cid-33-Modality
Type | CodeableConcept
40. EHDSDocument.header.serviceSpecialty
Definition | Additional details about where the content was created (e.g. clinical specialty)
Short | Additional details about where the content was created (e.g. clinical specialty)
Control | 0..*
Binding | SNOMED CT
Type | CodeableConcept
42. EHDSDocument.header.custodian
Definition | Organisation that is in charge of maintaining the document/report.
Short | Organisation that is in charge of maintaining the document/report.
Control | 0..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
44. EHDSDocument.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 | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSAttachment

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

0. EHDSDocument
Definition | Model for common document data elements, including the common header. Data relevant to document type and its content for administrative and searching purposes.
Short | Document model
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. EHDSDocument.header
Short | Document header
4. EHDSDocument.header.identifier
Short | Unique identifier of the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..?
6. EHDSDocument.header.author[x]
Short | Author(s) of the document
Control | 1..?
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
8. EHDSDocument.header.date
Short | Date of finalising/issuing the document
Control | 1..?
10. EHDSDocument.header.status
Short | Status of the document
12. EHDSDocument.header.source
Control | 0..0
14. EHDSDocument.header.documentType
Definition | Type of document at hand, e.g. 60591-5 Patient summary document.
Short | Type of document at hand, e.g. 60591-5 Patient summary document.
Control | 1..1
Binding | LOINC
Type | CodeableConcept
16. EHDSDocument.header.documentTitle
Definition | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Short | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Control | 1..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
18. EHDSDocument.header.period
Definition | Time of service that is being documented
Short | Time of service that is being documented
Control | 0..1
Type | Period
20. EHDSDocument.header.version
Definition | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
Short | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
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
22. EHDSDocument.header.attestation
Definition | Document attestation details
Short | Document attestation details
Control | 0..*
Type | Base
24. EHDSDocument.header.attestation.attester[x]
Definition | Attester who validated the document
Short | Attester who validated the document
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
26. EHDSDocument.header.attestation.datetime
Definition | Date and time of the approval of the document by Attester
Short | Date and time of the approval of the document by Attester
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. EHDSDocument.header.legalAuthentication
Definition | Document legal authentication details
Short | Document legal authentication details
Control | 0..*
Type | Base
30. EHDSDocument.header.legalAuthentication.legalAuthenticator[x]
Definition | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Short | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
32. EHDSDocument.header.legalAuthentication.datetime
Definition | Date and time when the document was authorised
Short | Date and time when the document was authorised
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
34. EHDSDocument.header.eventType
Definition | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Short | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Control | 0..*
Binding | LOINC, SNOMED CT, dicom-cid-33-Modality
Type | CodeableConcept
36. EHDSDocument.header.serviceSpecialty
Definition | Additional details about where the content was created (e.g. clinical specialty)
Short | Additional details about where the content was created (e.g. clinical specialty)
Control | 0..*
Binding | SNOMED CT
Type | CodeableConcept
38. EHDSDocument.header.custodian
Definition | Organisation that is in charge of maintaining the document/report.
Short | Organisation that is in charge of maintaining the document/report.
Control | 0..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
40. EHDSDocument.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 | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSAttachment

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

0. EHDSDocument
Definition | Model for common document data elements, including the common header. Data relevant to document type and its content for administrative and searching purposes.
Short | Document model
Control | 0..*
Is Modifier | false
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. EHDSDocument.header
Definition | Basic metadata for this information
Short | Document header
Control | 1..1
Type | Base
4. EHDSDocument.header.subject
Definition | Patient/subject information
Short | Patient/subject information
Control | 1..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSPatient
6. EHDSDocument.header.identifier
Definition | Business identifier for the object, unique within its system. Supporting disambiguation between different contexts (systems/countries).
Short | Unique identifier of the document
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..*
Type | Identifier
8. EHDSDocument.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) of the document
Control | 1..*
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. EHDSDocument.header.date
Definition | Date and optionally time of authoring/issuing
Short | Date of finalising/issuing the document
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
12. EHDSDocument.header.status
Definition | Status of the resource or document
Short | Status of the document
Control | 1..1
Type | CodeableConcept
14. EHDSDocument.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..0
Type | CodeableConcept
16. EHDSDocument.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. EHDSDocument.header.documentType
Definition | Type of document at hand, e.g. 60591-5 Patient summary document.
Short | Type of document at hand, e.g. 60591-5 Patient summary document.
Control | 1..1
Binding | LOINC
Type | CodeableConcept
20. EHDSDocument.header.documentTitle
Definition | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Short | Human readable document title that can be displayed in search results, etc. This can be documentType's display name, or it can be assembled from multiple elements. Examples: 'Laboratory Result Report', 'Patient Summary of Jane Green 10.12.2024'
Control | 1..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
22. EHDSDocument.header.period
Definition | Time of service that is being documented
Short | Time of service that is being documented
Control | 0..1
Type | Period
24. EHDSDocument.header.version
Definition | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
Short | Business version of the document. The exact algorithm for versioning is decided by the producer/custodian
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
26. EHDSDocument.header.attestation
Definition | Document attestation details
Short | Document attestation details
Control | 0..*
Type | Base
28. EHDSDocument.header.attestation.attester[x]
Definition | Attester who validated the document
Short | Attester who validated the document
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSDevice
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
30. EHDSDocument.header.attestation.datetime
Definition | Date and time of the approval of the document by Attester
Short | Date and time of the approval of the document by Attester
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
32. EHDSDocument.header.legalAuthentication
Definition | Document legal authentication details
Short | Document legal authentication details
Control | 0..*
Type | Base
34. EHDSDocument.header.legalAuthentication.legalAuthenticator[x]
Definition | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Short | The person or organisation taking responsibility for the medical content of the document (typically the person who signs it)
Control | 1..1
Type | Choice of: http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSHealthProfessional, http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
36. EHDSDocument.header.legalAuthentication.datetime
Definition | Date and time when the document was authorised
Short | Date and time when the document was authorised
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
38. EHDSDocument.header.eventType
Definition | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Short | Categorisation of the event covered by the document (e.g. laboratory study types, imaging study types including modality, etc.). Selection of such tags or labels depends on the use case and agreement between data sharing parties. This meta-data element serves primarily for searching and filtering purposes.
Control | 0..*
Binding | LOINC, SNOMED CT, dicom-cid-33-Modality
Type | CodeableConcept
40. EHDSDocument.header.serviceSpecialty
Definition | Additional details about where the content was created (e.g. clinical specialty)
Short | Additional details about where the content was created (e.g. clinical specialty)
Control | 0..*
Binding | SNOMED CT
Type | CodeableConcept
42. EHDSDocument.header.custodian
Definition | Organisation that is in charge of maintaining the document/report.
Short | Organisation that is in charge of maintaining the document/report.
Control | 0..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSOrganisation
44. EHDSDocument.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 | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSAttachment