Medication
1.1.0 - STU Belgium flag

This page is part of the HL7 BE Medication IG (v1.1.0: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Data Type Profile: Medication Dosage

Official URL: https://www.ehealth.fgov.be/standards/fhir/medication/StructureDefinition/BeDosage Version: 1.1.0
Active as of 2025-10-10 Computable Name: BeDosage

Specifications for a medication dosage for use in Belgian profiles.

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
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... text SΣ 0..1 string Free text dosage instructions e.g. SIG
... patientInstruction SΣ 0..1 string Patient or consumer oriented instructions
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... event SΣ 0..* dateTime When the event occurs
.... code SΣ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.
... route Σ 0..1 CodeableConcept How drug should enter body
Binding: Route of Administration ValueSet (required)
... doseAndRate Σ 0..* Element Amount of medication administered
.... Slices for dose[x] Σ 0..1 Amount of medication per dose
Slice: Unordered, Closed by type:$this
..... doseRange Range
..... doseQuantity Quantity(SimpleQuantity)
..... dose[x]:doseRange SΣ 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity SΣ 0..1 SimpleQuantity Amount of medication per dose

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Dosage.timing.code Base preferred TimingAbbreviation 📍4.0.1 FHIR Std.
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()

This structure is derived from Dosage

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... text S 0..1 string Free text dosage instructions e.g. SIG
... patientInstruction S 0..1 string Patient or consumer oriented instructions
... timing
.... event S 0..* dateTime When the event occurs
.... code S 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
... doseAndRate
.... Slices for dose[x] 0..1 Range, SimpleQuantity(4.0.1) Amount of medication per dose
Slice: Unordered, Open by type:$this
..... dose[x]:doseRange S 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity S 0..1 SimpleQuantity Amount of medication per dose

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... text SΣ 0..1 string Free text dosage instructions e.g. SIG
... additionalInstruction Σ 0..* CodeableConcept Supplemental instruction or warnings to the patient - e.g. "with meals", "may cause drowsiness"
Binding: SNOMEDCTAdditionalDosageInstructions (example): A coded concept identifying additional instructions such as "take with water" or "avoid operating heavy machinery".
... patientInstruction SΣ 0..1 string Patient or consumer oriented instructions
... timing Σ 0..1 Timing When medication should be administered
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... event SΣ 0..* dateTime When the event occurs
.... repeat ΣC 0..1 Element When the event is to occur
Constraints: tim-1, tim-2, tim-4, tim-5, tim-6, tim-7, tim-8, tim-9, tim-10
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... bounds[x] Σ 0..1 Length/Range of lengths, or (Start and/or end) limits
...... boundsDuration Duration
...... boundsRange Range
...... boundsPeriod Period
..... count Σ 0..1 positiveInt Number of times to repeat
..... countMax Σ 0..1 positiveInt Maximum number of times to repeat
..... duration Σ 0..1 decimal How long when it happens
..... durationMax Σ 0..1 decimal How long when it happens (Max)
..... durationUnit Σ 0..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
..... frequency Σ 0..1 positiveInt Event occurs frequency times per period
..... frequencyMax Σ 0..1 positiveInt Event occurs up to frequencyMax times per period
..... period Σ 0..1 decimal Event occurs frequency times per period
..... periodMax Σ 0..1 decimal Upper limit of period (3-4 hours)
..... periodUnit Σ 0..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
..... dayOfWeek Σ 0..* code mon | tue | wed | thu | fri | sat | sun
Binding: DaysOfWeek (required)
..... timeOfDay Σ 0..* time Time of day for action
..... when Σ 0..* code Code for time period of occurrence
Binding: EventTiming (required): Real world event relating to the schedule.
..... offset Σ 0..1 unsignedInt Minutes from event (before or after)
.... code SΣ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.
... asNeeded[x] Σ 0..1 Take "as needed" (for x)
Binding: SNOMEDCTMedicationAsNeededReasonCodes (example): A coded concept identifying the precondition that should be met or evaluated prior to consuming or administering a medication dose. For example "pain", "30 minutes prior to sexual intercourse", "on flare-up" etc.
.... asNeededBoolean boolean
.... asNeededCodeableConcept CodeableConcept
... site Σ 0..1 CodeableConcept Body site to administer to
Binding: SNOMEDCTAnatomicalStructureForAdministrationSiteCodes (example): A coded concept describing the site location the medicine enters into or onto the body.
... route Σ 0..1 CodeableConcept How drug should enter body
Binding: Route of Administration ValueSet (required)
... method Σ 0..1 CodeableConcept Technique for administering medication
Binding: SNOMEDCTAdministrationMethodCodes (example): A coded concept describing the technique by which the medicine is administered.
... doseAndRate Σ 0..* Element Amount of medication administered
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... type Σ 0..1 CodeableConcept The kind of dose or rate specified
Binding: DoseAndRateType (example): The kind of dose or rate specified.
.... Slices for dose[x] Σ 0..1 Amount of medication per dose
Slice: Unordered, Closed by type:$this
..... doseRange Range
..... doseQuantity Quantity(SimpleQuantity)
..... dose[x]:doseRange SΣ 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity SΣ 0..1 SimpleQuantity Amount of medication per dose
.... rate[x] Σ 0..1 Amount of medication per unit of time
..... rateRatio Ratio
..... rateRange Range
..... rateQuantity Quantity(SimpleQuantity)
... maxDosePerPeriod Σ 0..1 Ratio Upper limit on medication per unit of time
... maxDosePerAdministration Σ 0..1 SimpleQuantity(4.0.1) Upper limit on medication per administration
... maxDosePerLifetime Σ 0..1 SimpleQuantity(4.0.1) Upper limit on medication per lifetime of the patient

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Dosage.additionalInstruction Base example SNOMED CT Additional Dosage Instructions 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​durationUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​periodUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​dayOfWeek Base required DaysOfWeek 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​when Base required EventTiming 📍4.0.1 FHIR Std.
Dosage.timing.code Base preferred TimingAbbreviation 📍4.0.1 FHIR Std.
Dosage.asNeeded[x] Base example SNOMED CT Medication As Needed Reason Codes 📍4.0.1 FHIR Std.
Dosage.site Base example SNOMED CT Anatomical Structure for Administration Site Codes 📍4.0.1 FHIR Std.
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG
Dosage.method Base example SNOMED CT Administration Method Codes 📍4.0.1 FHIR Std.
Dosage.doseAndRate.type Base example DoseAndRateType 📍4.0.1 FHIR Std.

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
tim-1 error Dosage.timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Dosage.timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Dosage.timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Dosage.timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Dosage.timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Dosage.timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Dosage.timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error Dosage.timing.repeat If there's an offset, there must be a when (and not C, CM, CD, CV) offset.empty() or (when.exists() and ((when in ('C' | 'CM' | 'CD' | 'CV')).not()))
tim-10 error Dosage.timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

This structure is derived from Dosage

Summary

Must-Support: 6 elements

Structures

This structure refers to these other structures:

Slices

This structure defines the following Slices:

  • The element 1 is sliced based on the value of Dosage.doseAndRate.dose[x]

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... text SΣ 0..1 string Free text dosage instructions e.g. SIG
... patientInstruction SΣ 0..1 string Patient or consumer oriented instructions
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... event SΣ 0..* dateTime When the event occurs
.... code SΣ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.
... route Σ 0..1 CodeableConcept How drug should enter body
Binding: Route of Administration ValueSet (required)
... doseAndRate Σ 0..* Element Amount of medication administered
.... Slices for dose[x] Σ 0..1 Amount of medication per dose
Slice: Unordered, Closed by type:$this
..... doseRange Range
..... doseQuantity Quantity(SimpleQuantity)
..... dose[x]:doseRange SΣ 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity SΣ 0..1 SimpleQuantity Amount of medication per dose

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Dosage.timing.code Base preferred TimingAbbreviation 📍4.0.1 FHIR Std.
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()

Differential View

This structure is derived from Dosage

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... text S 0..1 string Free text dosage instructions e.g. SIG
... patientInstruction S 0..1 string Patient or consumer oriented instructions
... timing
.... event S 0..* dateTime When the event occurs
.... code S 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
... doseAndRate
.... Slices for dose[x] 0..1 Range, SimpleQuantity(4.0.1) Amount of medication per dose
Slice: Unordered, Open by type:$this
..... dose[x]:doseRange S 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity S 0..1 SimpleQuantity Amount of medication per dose

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Dosage 0..* Dosage How the medication is/was taken or should be taken
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... text SΣ 0..1 string Free text dosage instructions e.g. SIG
... additionalInstruction Σ 0..* CodeableConcept Supplemental instruction or warnings to the patient - e.g. "with meals", "may cause drowsiness"
Binding: SNOMEDCTAdditionalDosageInstructions (example): A coded concept identifying additional instructions such as "take with water" or "avoid operating heavy machinery".
... patientInstruction SΣ 0..1 string Patient or consumer oriented instructions
... timing Σ 0..1 Timing When medication should be administered
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
.... event SΣ 0..* dateTime When the event occurs
.... repeat ΣC 0..1 Element When the event is to occur
Constraints: tim-1, tim-2, tim-4, tim-5, tim-6, tim-7, tim-8, tim-9, tim-10
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... bounds[x] Σ 0..1 Length/Range of lengths, or (Start and/or end) limits
...... boundsDuration Duration
...... boundsRange Range
...... boundsPeriod Period
..... count Σ 0..1 positiveInt Number of times to repeat
..... countMax Σ 0..1 positiveInt Maximum number of times to repeat
..... duration Σ 0..1 decimal How long when it happens
..... durationMax Σ 0..1 decimal How long when it happens (Max)
..... durationUnit Σ 0..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
..... frequency Σ 0..1 positiveInt Event occurs frequency times per period
..... frequencyMax Σ 0..1 positiveInt Event occurs up to frequencyMax times per period
..... period Σ 0..1 decimal Event occurs frequency times per period
..... periodMax Σ 0..1 decimal Upper limit of period (3-4 hours)
..... periodUnit Σ 0..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
..... dayOfWeek Σ 0..* code mon | tue | wed | thu | fri | sat | sun
Binding: DaysOfWeek (required)
..... timeOfDay Σ 0..* time Time of day for action
..... when Σ 0..* code Code for time period of occurrence
Binding: EventTiming (required): Real world event relating to the schedule.
..... offset Σ 0..1 unsignedInt Minutes from event (before or after)
.... code SΣ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.
... asNeeded[x] Σ 0..1 Take "as needed" (for x)
Binding: SNOMEDCTMedicationAsNeededReasonCodes (example): A coded concept identifying the precondition that should be met or evaluated prior to consuming or administering a medication dose. For example "pain", "30 minutes prior to sexual intercourse", "on flare-up" etc.
.... asNeededBoolean boolean
.... asNeededCodeableConcept CodeableConcept
... site Σ 0..1 CodeableConcept Body site to administer to
Binding: SNOMEDCTAnatomicalStructureForAdministrationSiteCodes (example): A coded concept describing the site location the medicine enters into or onto the body.
... route Σ 0..1 CodeableConcept How drug should enter body
Binding: Route of Administration ValueSet (required)
... method Σ 0..1 CodeableConcept Technique for administering medication
Binding: SNOMEDCTAdministrationMethodCodes (example): A coded concept describing the technique by which the medicine is administered.
... doseAndRate Σ 0..* Element Amount of medication administered
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... type Σ 0..1 CodeableConcept The kind of dose or rate specified
Binding: DoseAndRateType (example): The kind of dose or rate specified.
.... Slices for dose[x] Σ 0..1 Amount of medication per dose
Slice: Unordered, Closed by type:$this
..... doseRange Range
..... doseQuantity Quantity(SimpleQuantity)
..... dose[x]:doseRange SΣ 0..1 Range Amount of medication per dose
..... dose[x]:doseQuantity SΣ 0..1 SimpleQuantity Amount of medication per dose
.... rate[x] Σ 0..1 Amount of medication per unit of time
..... rateRatio Ratio
..... rateRange Range
..... rateQuantity Quantity(SimpleQuantity)
... maxDosePerPeriod Σ 0..1 Ratio Upper limit on medication per unit of time
... maxDosePerAdministration Σ 0..1 SimpleQuantity(4.0.1) Upper limit on medication per administration
... maxDosePerLifetime Σ 0..1 SimpleQuantity(4.0.1) Upper limit on medication per lifetime of the patient

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Dosage.additionalInstruction Base example SNOMED CT Additional Dosage Instructions 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​durationUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​periodUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​dayOfWeek Base required DaysOfWeek 📍4.0.1 FHIR Std.
Dosage.timing.repeat.​when Base required EventTiming 📍4.0.1 FHIR Std.
Dosage.timing.code Base preferred TimingAbbreviation 📍4.0.1 FHIR Std.
Dosage.asNeeded[x] Base example SNOMED CT Medication As Needed Reason Codes 📍4.0.1 FHIR Std.
Dosage.site Base example SNOMED CT Anatomical Structure for Administration Site Codes 📍4.0.1 FHIR Std.
Dosage.route Base required Route of Administration ValueSet 📦1.1.0 This IG
Dosage.method Base example SNOMED CT Administration Method Codes 📍4.0.1 FHIR Std.
Dosage.doseAndRate.type Base example DoseAndRateType 📍4.0.1 FHIR Std.

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
tim-1 error Dosage.timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Dosage.timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Dosage.timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Dosage.timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Dosage.timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Dosage.timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Dosage.timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error Dosage.timing.repeat If there's an offset, there must be a when (and not C, CM, CD, CV) offset.empty() or (when.exists() and ((when in ('C' | 'CM' | 'CD' | 'CV')).not()))
tim-10 error Dosage.timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

This structure is derived from Dosage

Summary

Must-Support: 6 elements

Structures

This structure refers to these other structures:

Slices

This structure defines the following Slices:

  • The element 1 is sliced based on the value of Dosage.doseAndRate.dose[x]

 

Other representations of profile: CSV, Excel, Schematron