EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 1.0.0 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

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Logical Model: Dosage model

The model covers usage instructions for administering a medicinal product, focusing on the most frequently used data elements. More complex dosage schemes may require additional elements, which should be communicated as part of the rendered dosage instructions element.

Usages:

• Derived from this Logical Model: Administered dosage model and Dosage obligations
• Use this Logical Model: Medication dispense model, Medication prescription model and Medication use model

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description Differentials, Snapshots, and other representations.

• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSDosage		0..*	Base	Dosage model
renderedDosageInstruction		0..1	string	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.
dosageDetails		0..*	Base	Details of single dosage scheme step
sequence		0..1	integer	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.
note		0..1	string	Patient oriented instructions as free text for this dosage step
doseAndRate		0..*	Base	Amount of medication administered per one dose (= one timing)
dose[x]		0..1		Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml) Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
doseQuantity			Quantity
doseRange			Range
rate[x]		0..1		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). Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
rateQuantity			Quantity
rateRatio			Ratio
repeat		0..1	Base	Repetition of the administration.
bounds[x]		0..1		Time bounds for the treatment (current dosage scheme), Quantity contains a number of time units (e.g 10 days), Period contains start and end date (e.g. 05.08.2023 - 10.08.2023). Binding Description: (preferred): UCUM
boundsQuantity			Quantity
boundsPeriod			Period
duration		0..1	Quantity	Duration of administration (e.g '5 minutes', '1 hour') Binding Description: (preferred): UCUM
frequency		0..1	Base	Frequency of intake/administration (e.g 'three times a day')
numberOfTimes		1..1	integer	Number of times per period (e.g '3 times')
period		1..1	Quantity	Duration to which the frequency applies (e.g '... / 1 day') Binding Description: (preferred): UCUM
dayOfWeek		0..*	CodeableConcept	The day of the week of administration, e.g Mon, Tue, etc
timeOfDay		0..*	time	Exact time of day of administration (e.g '10:00')
eventTime		0..*	CodeableConcept	Time period or event when the administration should happen ('before meal', 'immediately', 'morning')
asNeeded		0..1	boolean	Take as needed
bodySite		0..1	EHDSBodyStructure	Body site of administration
routeOfAdministration		0..1	CodeableConcept	Route of administration Binding Description: (preferred): EDQM Standard Terms
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
EHDSDosage.dosageDetails.​doseAndRate.dose[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​doseAndRate.rate[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.bounds[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.duration	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.frequency.period	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​routeOfAdministration	Base	preferred		Not State	Unknown

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSDosage		0..*	Base	Dosage model
renderedDosageInstruction		0..1	string	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.
dosageDetails		0..*	Base	Details of single dosage scheme step
sequence		0..1	integer	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.
note		0..1	string	Patient oriented instructions as free text for this dosage step
doseAndRate		0..*	Base	Amount of medication administered per one dose (= one timing)
dose[x]		0..1		Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml) Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
doseQuantity			Quantity
doseRange			Range
rate[x]		0..1		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). Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
rateQuantity			Quantity
rateRatio			Ratio
repeat		0..1	Base	Repetition of the administration.
bounds[x]		0..1		Time bounds for the treatment (current dosage scheme), Quantity contains a number of time units (e.g 10 days), Period contains start and end date (e.g. 05.08.2023 - 10.08.2023). Binding Description: (preferred): UCUM
boundsQuantity			Quantity
boundsPeriod			Period
duration		0..1	Quantity	Duration of administration (e.g '5 minutes', '1 hour') Binding Description: (preferred): UCUM
frequency		0..1	Base	Frequency of intake/administration (e.g 'three times a day')
numberOfTimes		1..1	integer	Number of times per period (e.g '3 times')
period		1..1	Quantity	Duration to which the frequency applies (e.g '... / 1 day') Binding Description: (preferred): UCUM
dayOfWeek		0..*	CodeableConcept	The day of the week of administration, e.g Mon, Tue, etc
timeOfDay		0..*	time	Exact time of day of administration (e.g '10:00')
eventTime		0..*	CodeableConcept	Time period or event when the administration should happen ('before meal', 'immediately', 'morning')
asNeeded		0..1	boolean	Take as needed
bodySite		0..1	EHDSBodyStructure	Body site of administration
routeOfAdministration		0..1	CodeableConcept	Route of administration Binding Description: (preferred): EDQM Standard Terms
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
EHDSDosage.dosageDetails.​doseAndRate.dose[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​doseAndRate.rate[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.bounds[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.duration	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.frequency.period	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​routeOfAdministration	Base	preferred		Not State	Unknown

Summary

Mandatory: 0 element(2 nested mandatory elements)

Differential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSDosage		0..*	Base	Dosage model
renderedDosageInstruction		0..1	string	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.
dosageDetails		0..*	Base	Details of single dosage scheme step
sequence		0..1	integer	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.
note		0..1	string	Patient oriented instructions as free text for this dosage step
doseAndRate		0..*	Base	Amount of medication administered per one dose (= one timing)
dose[x]		0..1		Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml) Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
doseQuantity			Quantity
doseRange			Range
rate[x]		0..1		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). Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
rateQuantity			Quantity
rateRatio			Ratio
repeat		0..1	Base	Repetition of the administration.
bounds[x]		0..1		Time bounds for the treatment (current dosage scheme), Quantity contains a number of time units (e.g 10 days), Period contains start and end date (e.g. 05.08.2023 - 10.08.2023). Binding Description: (preferred): UCUM
boundsQuantity			Quantity
boundsPeriod			Period
duration		0..1	Quantity	Duration of administration (e.g '5 minutes', '1 hour') Binding Description: (preferred): UCUM
frequency		0..1	Base	Frequency of intake/administration (e.g 'three times a day')
numberOfTimes		1..1	integer	Number of times per period (e.g '3 times')
period		1..1	Quantity	Duration to which the frequency applies (e.g '... / 1 day') Binding Description: (preferred): UCUM
dayOfWeek		0..*	CodeableConcept	The day of the week of administration, e.g Mon, Tue, etc
timeOfDay		0..*	time	Exact time of day of administration (e.g '10:00')
eventTime		0..*	CodeableConcept	Time period or event when the administration should happen ('before meal', 'immediately', 'morning')
asNeeded		0..1	boolean	Take as needed
bodySite		0..1	EHDSBodyStructure	Body site of administration
routeOfAdministration		0..1	CodeableConcept	Route of administration Binding Description: (preferred): EDQM Standard Terms
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
EHDSDosage.dosageDetails.​doseAndRate.dose[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​doseAndRate.rate[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.bounds[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.duration	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.frequency.period	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​routeOfAdministration	Base	preferred		Not State	Unknown

Snapshot ViewView

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
EHDSDosage		0..*	Base	Dosage model
renderedDosageInstruction		0..1	string	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.
dosageDetails		0..*	Base	Details of single dosage scheme step
sequence		0..1	integer	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.
note		0..1	string	Patient oriented instructions as free text for this dosage step
doseAndRate		0..*	Base	Amount of medication administered per one dose (= one timing)
dose[x]		0..1		Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml) Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
doseQuantity			Quantity
doseRange			Range
rate[x]		0..1		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). Binding Description: (preferred): UCUM (units of measurement), EDQM Standard Terms (units of presentation)
rateQuantity			Quantity
rateRatio			Ratio
repeat		0..1	Base	Repetition of the administration.
bounds[x]		0..1		Time bounds for the treatment (current dosage scheme), Quantity contains a number of time units (e.g 10 days), Period contains start and end date (e.g. 05.08.2023 - 10.08.2023). Binding Description: (preferred): UCUM
boundsQuantity			Quantity
boundsPeriod			Period
duration		0..1	Quantity	Duration of administration (e.g '5 minutes', '1 hour') Binding Description: (preferred): UCUM
frequency		0..1	Base	Frequency of intake/administration (e.g 'three times a day')
numberOfTimes		1..1	integer	Number of times per period (e.g '3 times')
period		1..1	Quantity	Duration to which the frequency applies (e.g '... / 1 day') Binding Description: (preferred): UCUM
dayOfWeek		0..*	CodeableConcept	The day of the week of administration, e.g Mon, Tue, etc
timeOfDay		0..*	time	Exact time of day of administration (e.g '10:00')
eventTime		0..*	CodeableConcept	Time period or event when the administration should happen ('before meal', 'immediately', 'morning')
asNeeded		0..1	boolean	Take as needed
bodySite		0..1	EHDSBodyStructure	Body site of administration
routeOfAdministration		0..1	CodeableConcept	Route of administration Binding Description: (preferred): EDQM Standard Terms
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
EHDSDosage.dosageDetails.​doseAndRate.dose[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​doseAndRate.rate[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.bounds[x]	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.duration	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​repeat.frequency.period	Base	preferred		Not State	Unknown
EHDSDosage.dosageDetails.​routeOfAdministration	Base	preferred		Not State	Unknown

Summary

Mandatory: 0 element(2 nested mandatory elements)

Other representations of profile: CSV, Excel

Notes: