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: EHDSAdministeredDosage - Detailed Descriptions

Draft as of 2026-02-23

Definitions for the EHDSAdministeredDosage 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. EHDSAdministeredDosage
Definition | Model contains elements needed for registering an individual medication administration. It is derived from the full dosage regimen model in order to keep the consistency between the shared elements. Base definition for all types defined in FHIR type system.
Short | Administered dosage 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. EHDSAdministeredDosage.renderedDosageInstruction
Definition | Full dosage information as human-readable text covering all dosage steps. Generating the text follows local rules and should include all locally implemented dosage data even when such elements are not present in this model.
Short | Full dosage information as human-readable text covering all dosage steps. Generating the text follows local rules and should include all locally implemented dosage data even when such elements are not present in this model.
Control | 0..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
4. EHDSAdministeredDosage.dosageDetails
Definition | Details of single dosage scheme step
Short | Details of single dosage scheme step
Control | 0..1
Type | Base
6. EHDSAdministeredDosage.dosageDetails.sequence
Definition | Order of the dosage instruction, in case one treatment consists of several dosage steps. When two schemes share the same sequence number, they are meant to be running in parallel.
Short | Order of the dosage instruction, in case one treatment consists of several dosage steps. When two schemes share the same sequence number, they are meant to be running in parallel.
Control | 0..0
Type | integer
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
8. EHDSAdministeredDosage.dosageDetails.note
Definition | Patient oriented instructions as free text for this dosage step
Short | Patient oriented instructions as free text for this dosage step
Control | 0..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
10. EHDSAdministeredDosage.dosageDetails.doseAndRate
Definition | Amount of medication administered per one dose (= one timing)
Short | Amount of medication administered per one dose (= one timing)
Control | 0..*
Type | Base
12. EHDSAdministeredDosage.dosageDetails.doseAndRate.dose[x]
Definition | Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml)
Short | Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml)
Control | 0..1
Binding | UCUM (units of measurement), EDQM Standard Terms (units of presentation)
Type | Choice of: Quantity, Range
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
14. EHDSAdministeredDosage.dosageDetails.doseAndRate.rate[x]
Definition | Amount of medication per time period (e.g. 100mg per 1 hour). When rate is provided per 1 time unit, Quantity data type can be used with a suitable unit (e.g. mg/h, ug/min).
Short | Amount of medication per time period (e.g. 100mg per 1 hour). When rate is provided per 1 time unit, Quantity data type can be used with a suitable unit (e.g. mg/h, ug/min).
Control | 0..1
Binding | UCUM (units of measurement), EDQM Standard Terms (units of presentation)
Type | Choice of: Quantity, Ratio
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
16. EHDSAdministeredDosage.dosageDetails.repeat
Definition | Repetition of the administration.
Short | Repetition of the administration.
Control | 0..0
Type | Base
26. EHDSAdministeredDosage.dosageDetails.asNeeded
Definition | Take as needed
Short | Take as needed
Control | 0..0
Type | boolean
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. EHDSAdministeredDosage.dosageDetails.bodySite
Definition | Body site of administration
Short | Body site of administration
Control | 0..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure
30. EHDSAdministeredDosage.dosageDetails.routeOfAdministration
Definition | Route of administration
Short | Route of administration
Control | 0..1
Binding | EDQM Standard Terms
Type | CodeableConcept

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

0. EHDSAdministeredDosage
Definition | Model contains elements needed for registering an individual medication administration. It is derived from the full dosage regimen model in order to keep the consistency between the shared elements.
Short | Administered dosage model
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. EHDSAdministeredDosage.dosageDetails
Control | 0..1
4. EHDSAdministeredDosage.dosageDetails.sequence
Control | 0..0
6. EHDSAdministeredDosage.dosageDetails.repeat
Control | 0..0
8. EHDSAdministeredDosage.dosageDetails.asNeeded
Control | 0..0

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

0. EHDSAdministeredDosage
Definition | Model contains elements needed for registering an individual medication administration. It is derived from the full dosage regimen model in order to keep the consistency between the shared elements.
Short | Administered dosage model
Control | 0..*
Is Modifier | false
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. EHDSAdministeredDosage.renderedDosageInstruction
Definition | Full dosage information as human-readable text covering all dosage steps. Generating the text follows local rules and should include all locally implemented dosage data even when such elements are not present in this model.
Short | Full dosage information as human-readable text covering all dosage steps. Generating the text follows local rules and should include all locally implemented dosage data even when such elements are not present in this model.
Control | 0..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
4. EHDSAdministeredDosage.dosageDetails
Definition | Details of single dosage scheme step
Short | Details of single dosage scheme step
Control | 0..1
Type | Base
6. EHDSAdministeredDosage.dosageDetails.sequence
Definition | Order of the dosage instruction, in case one treatment consists of several dosage steps. When two schemes share the same sequence number, they are meant to be running in parallel.
Short | Order of the dosage instruction, in case one treatment consists of several dosage steps. When two schemes share the same sequence number, they are meant to be running in parallel.
Control | 0..0
Type | integer
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
8. EHDSAdministeredDosage.dosageDetails.note
Definition | Patient oriented instructions as free text for this dosage step
Short | Patient oriented instructions as free text for this dosage step
Control | 0..1
Type | string
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
10. EHDSAdministeredDosage.dosageDetails.doseAndRate
Definition | Amount of medication administered per one dose (= one timing)
Short | Amount of medication administered per one dose (= one timing)
Control | 0..*
Type | Base
12. EHDSAdministeredDosage.dosageDetails.doseAndRate.dose[x]
Definition | Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml)
Short | Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml)
Control | 0..1
Binding | UCUM (units of measurement), EDQM Standard Terms (units of presentation)
Type | Choice of: Quantity, Range
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
14. EHDSAdministeredDosage.dosageDetails.doseAndRate.rate[x]
Definition | Amount of medication per time period (e.g. 100mg per 1 hour). When rate is provided per 1 time unit, Quantity data type can be used with a suitable unit (e.g. mg/h, ug/min).
Short | Amount of medication per time period (e.g. 100mg per 1 hour). When rate is provided per 1 time unit, Quantity data type can be used with a suitable unit (e.g. mg/h, ug/min).
Control | 0..1
Binding | UCUM (units of measurement), EDQM Standard Terms (units of presentation)
Type | Choice of: Quantity, Ratio
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
16. EHDSAdministeredDosage.dosageDetails.repeat
Definition | Repetition of the administration.
Short | Repetition of the administration.
Control | 0..0
Type | Base
26. EHDSAdministeredDosage.dosageDetails.asNeeded
Definition | Take as needed
Short | Take as needed
Control | 0..0
Type | boolean
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. EHDSAdministeredDosage.dosageDetails.bodySite
Definition | Body site of administration
Short | Body site of administration
Control | 0..1
Type | http://www.xt-ehr.eu/fhir/models/StructureDefinition/EHDSBodyStructure
30. EHDSAdministeredDosage.dosageDetails.routeOfAdministration
Definition | Route of administration
Short | Route of administration
Control | 0..1
Binding | EDQM Standard Terms
Type | CodeableConcept