FHIR Extensions Pack
5.3.0 - May 2026 International flag

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.3.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

Extension: Dosage - Minimum Gap Between Doses

Official URL: http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose Version: 5.3.0
Standards status: Draft Maturity Level: 1 Computable Name: DosageMinimumGapBetweenDose
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1594

The minimum amount of time that must pass between administering the specified dose amount.

This is an draft extension definition; the committee is seeking implementation feedback, and the definition or contents of the extension may change in future versions

Context of Use

This extension may be used on the following element(s)

Usage info

Usages:

  • This Extension is not used by any profiles in this Implementation Guide

You can also check for usages in the FHIR IG Statistics

Changes since version 5.2.0:

  • The resource metadata has changed (experimental)

    • Formal Views of Extension Content

    Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

    This structure is derived from Extension

    Summary

    Complex Extension: The minimum amount of time that must pass between administering the specified dose amount.

    • offset: Duration: Specifies the offset before or after the goal is met to follow the instructions.
    • goal: string, Reference: The specific goal to meet to follow the dosage instructions.
    • offset: Duration: Specifies the offset before or after the trigger happens to follow the instructions.
    • trigger: string, Reference: The event that causes the dosage instruction to be followed.
    • doesNotOccur: boolean: If set to 'true', indicates that the condition must not be present for the dosage instructions to be followed.
    • condition: Reference: The event that causes the dosage instruction to be followed.

    Maturity: 1

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Time that must pass between doses
    ... Slices for extension Content/Rules for all slices
    .... extension:meetGoal 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:offset 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:goal 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "goal"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Goal)
    ..... url 1..1 uri "meetGoal"
    ..... value[x] 0..0 Value of extension
    .... extension:whenTrigger 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:offset 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:trigger 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "trigger"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Procedure | ActivityDefinition | ObservationDefinition)
    ..... url 1..1 uri "whenTrigger"
    ..... value[x] 0..0 Value of extension
    .... extension:precondition 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:doesNotOccur 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "doesNotOccur"
    ....... value[x] 1..1 boolean Value of extension
    ...... extension:condition 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "condition"
    ....... value[x] 1..1 Reference(ActivityDefinition | ObservationDefinition) Value of extension
    ..... url 1..1 uri "precondition"
    ..... value[x] 0..0 Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose"
    ... value[x] 0..0 Value of extension

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Time that must pass between doses
    ... id 0..1 id Unique id for inter-element referencing
    ... Slices for extension 0..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    .... extension:meetGoal 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:offset 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:goal 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "goal"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Goal)
    ..... url 1..1 uri "meetGoal"
    .... extension:whenTrigger 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:offset 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:trigger 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "trigger"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Procedure | ActivityDefinition | ObservationDefinition)
    ..... url 1..1 uri "whenTrigger"
    .... extension:precondition 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:doesNotOccur 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "doesNotOccur"
    ....... value[x] 1..1 boolean Value of extension
    ...... extension:condition 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "condition"
    ....... value[x] 1..1 Reference(ActivityDefinition | ObservationDefinition) Value of extension
    ..... url 1..1 uri "precondition"
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose"

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Complex Extension: The minimum amount of time that must pass between administering the specified dose amount.

    • offset: Duration: Specifies the offset before or after the goal is met to follow the instructions.
    • goal: string, Reference: The specific goal to meet to follow the dosage instructions.
    • offset: Duration: Specifies the offset before or after the trigger happens to follow the instructions.
    • trigger: string, Reference: The event that causes the dosage instruction to be followed.
    • doesNotOccur: boolean: If set to 'true', indicates that the condition must not be present for the dosage instructions to be followed.
    • condition: Reference: The event that causes the dosage instruction to be followed.

    Maturity: 1

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Time that must pass between doses
    ... Slices for extension Content/Rules for all slices
    .... extension:meetGoal 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:offset 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:goal 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "goal"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Goal)
    ..... url 1..1 uri "meetGoal"
    ..... value[x] 0..0 Value of extension
    .... extension:whenTrigger 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:offset 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:trigger 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "trigger"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Procedure | ActivityDefinition | ObservationDefinition)
    ..... url 1..1 uri "whenTrigger"
    ..... value[x] 0..0 Value of extension
    .... extension:precondition 0..* Extension Extension
    ..... extension 1..* Extension Extension
    ..... Slices for extension Content/Rules for all slices
    ...... extension:doesNotOccur 0..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "doesNotOccur"
    ....... value[x] 1..1 boolean Value of extension
    ...... extension:condition 1..1 Extension Extension
    ....... extension 0..0 Extension
    ....... url 1..1 uri "condition"
    ....... value[x] 1..1 Reference(ActivityDefinition | ObservationDefinition) Value of extension
    ..... url 1..1 uri "precondition"
    ..... value[x] 0..0 Value of extension
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose"
    ... value[x] 0..0 Value of extension

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
    .. Extension 0..1 Extension Time that must pass between doses
    ... id 0..1 id Unique id for inter-element referencing
    ... Slices for extension 0..* Extension Additional content defined by implementations
    Slice: Unordered, Open by value:url
    .... extension:meetGoal 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:offset 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:goal 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "goal"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Goal)
    ..... url 1..1 uri "meetGoal"
    .... extension:whenTrigger 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:offset 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "offset"
    ....... value[x] 1..1 Duration Value of extension
    ...... extension:trigger 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "trigger"
    ....... value[x] 1..1 Value of extension
    ........ valueString string
    ........ valueReference Reference(Procedure | ActivityDefinition | ObservationDefinition)
    ..... url 1..1 uri "whenTrigger"
    .... extension:precondition 0..* Extension Extension
    ..... id 0..1 id Unique id for inter-element referencing
    ..... Slices for extension 1..* Extension Extension
    Slice: Unordered, Open by value:url
    ...... extension:doesNotOccur 0..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "doesNotOccur"
    ....... value[x] 1..1 boolean Value of extension
    ...... extension:condition 1..1 Extension Extension
    ....... id 0..1 id Unique id for inter-element referencing
    ....... extension 0..0 Extension
    Slice: Unordered, Open by value:url
    ....... url 1..1 uri "condition"
    ....... value[x] 1..1 Reference(ActivityDefinition | ObservationDefinition) Value of extension
    ..... url 1..1 uri "precondition"
    ... url 1..1 uri "http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose"

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    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()

    R4B

    The extension is unchanged in R4B

    R4

    The extension is unchanged in R4

    R3

    The extension is represented a little differently in R3:

    • Remove the target profile http://hl7.org/fhir/StructureDefinition/ObservationDefinition from the element Extension.extension:whenTrigger.extension:trigger.value[x]
    • Remove the target profile http://hl7.org/fhir/StructureDefinition/ObservationDefinition from the element Extension.extension:precondition.extension:condition.value[x]
    Name Flags Card. Type Description & Constraints      Filter: Filters doco
    . . Extension 0..1 Extension Time that must pass between doses
    . . . Slices for extension Content/Rules for all slices
    . . . . extension:meetGoal 0..* Extension Extension
    . . . . . extension 1.. * Extension Extension
    . . . . . Slices for extension Content/Rules for all slices
    . . . . . . extension:offset 0..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "offset"
    . . . . . . . value[x] 1.. 1 Duration Value of extension
    . . . . . . extension:goal 1..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "goal"
    . . . . . . . value[x] 1.. 1 Value of extension
    . . . . . . . . valueString string
    . . . . . . . . valueReference Reference ( Goal )
    . . . . . url 1 .. 1 uri "meetGoal"
    . . . . . value[x] 0 .. 0 Value of extension
    . . . . extension:whenTrigger 0..* Extension Extension
    . . . . . extension 1.. * Extension Extension
    . . . . . Slices for extension Content/Rules for all slices
    . . . . . . extension:offset 0..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "offset"
    . . . . . . . value[x] 1.. 1 Duration Value of extension
    . . . . . . extension:trigger 1..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "trigger"
    . . . . . . . value[x] 1.. 1 Value of extension
    . . . . . . . . valueString string
    . . . . . . . . valueReference Reference ( Procedure | ActivityDefinition )
    . . . . . url 1 .. 1 uri "whenTrigger"
    . . . . . value[x] 0 .. 0 Value of extension
    . . . . extension:precondition 0..* Extension Extension
    . . . . . extension 1.. * Extension Extension
    . . . . . Slices for extension Content/Rules for all slices
    . . . . . . extension:doesNotOccur 0..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "doesNotOccur"
    . . . . . . . value[x] 1.. 1 boolean Value of extension
    . . . . . . extension:condition 1..1 Extension Extension
    . . . . . . . extension 0 .. 0 Extension
    . . . . . . . url 1 .. 1 uri "condition"
    . . . . . . . value[x] 1.. 1 Reference ( ActivityDefinition ) Value of extension
    . . . . . url 1 .. 1 uri "precondition"
    . . . . . value[x] 0 .. 0 Value of extension
    . . . url 1 .. 1 uri "http://hl7.org/fhir/StructureDefinition/dosage-minimumGapBetweenDose"
    . . . value[x] 0 .. 0 Value of extension

    doco Documentation for this format

    Search Parameters for this Extension

    (none found)