Quality Measure Implementation Guide
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Quality Measure Implementation Guide, published by HL7 International / Clinical Quality Information. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-cqm/ and changes regularly. See the Directory of published versions

Data Type Profile: CQM DataType Timing

Official URL: http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-datatype-timing Version: 1.0.0
Standards status: Trial-use Active as of 2026-03-12 Maturity Level: 4 Computable Name: CQMDataTypeTiming
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.42.37

Quality Measure IG constraints on the Timing datatype used in reportingTiming.

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description Differentials, Snapshots, and other representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... repeat ΣC 1..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
.... frequency Σ 1..1 positiveInt Event occurs frequency times per period
.... period Σ 1..1 decimal Event occurs frequency times per period
.... periodUnit Σ 1..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
.... timeOfDay SΣ 0..1 time Time of day for action

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Timing.repeat.periodUnit Base required UnitsOfTime 📍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 Timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error 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 Timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... repeat 1..1 Element When the event is to occur
.... frequency 1..1 positiveInt Event occurs frequency times per period
.... period 1..1 decimal Event occurs frequency times per period
.... periodUnit 1..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
.... timeOfDay S 0..1 time Time of day for action

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... 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
... repeat ΣC 1..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 1..1 positiveInt Event occurs frequency times per period
.... frequencyMax Σ 0..1 positiveInt Event occurs up to frequencyMax times per period
.... period Σ 1..1 decimal Event occurs frequency times per period
.... periodMax Σ 0..1 decimal Upper limit of period (3-4 hours)
.... periodUnit Σ 1..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 SΣ 0..1 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 Σ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Timing.repeat.durationUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Timing.repeat.periodUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Timing.repeat.dayOfWeek Base required DaysOfWeek 📍4.0.1 FHIR Std.
Timing.repeat.when Base required EventTiming 📍4.0.1 FHIR Std.
Timing.code Base preferred TimingAbbreviation 📍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 Timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error 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 Timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

Summary

Mandatory: 4 elements
Must-Support: 1 element

Maturity: 4

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
... repeat ΣC 1..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
.... frequency Σ 1..1 positiveInt Event occurs frequency times per period
.... period Σ 1..1 decimal Event occurs frequency times per period
.... periodUnit Σ 1..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
Binding: UnitsOfTime (required): A unit of time (units from UCUM).
.... timeOfDay SΣ 0..1 time Time of day for action

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Timing.repeat.periodUnit Base required UnitsOfTime 📍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 Timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error 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 Timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

Differential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... repeat 1..1 Element When the event is to occur
.... frequency 1..1 positiveInt Event occurs frequency times per period
.... period 1..1 decimal Event occurs frequency times per period
.... periodUnit 1..1 code s | min | h | d | wk | mo | a - unit of time (UCUM)
.... timeOfDay S 0..1 time Time of day for action

doco Documentation for this format

Snapshot ViewView

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Timing 0..* Timing A timing schedule that specifies an event that may occur multiple times
... 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
... repeat ΣC 1..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 1..1 positiveInt Event occurs frequency times per period
.... frequencyMax Σ 0..1 positiveInt Event occurs up to frequencyMax times per period
.... period Σ 1..1 decimal Event occurs frequency times per period
.... periodMax Σ 0..1 decimal Upper limit of period (3-4 hours)
.... periodUnit Σ 1..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 SΣ 0..1 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 Σ 0..1 CodeableConcept BID | TID | QID | AM | PM | QD | QOD | +
Binding: TimingAbbreviation (preferred): Code for a known / defined timing pattern.

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Timing.repeat.durationUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Timing.repeat.periodUnit Base required UnitsOfTime 📍4.0.1 FHIR Std.
Timing.repeat.dayOfWeek Base required DaysOfWeek 📍4.0.1 FHIR Std.
Timing.repeat.when Base required EventTiming 📍4.0.1 FHIR Std.
Timing.code Base preferred TimingAbbreviation 📍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 Timing.repeat if there's a duration, there needs to be duration units duration.empty() or durationUnit.exists()
tim-2 error Timing.repeat if there's a period, there needs to be period units period.empty() or periodUnit.exists()
tim-4 error Timing.repeat duration SHALL be a non-negative value duration.exists() implies duration >= 0
tim-5 error Timing.repeat period SHALL be a non-negative value period.exists() implies period >= 0
tim-6 error Timing.repeat If there's a periodMax, there must be a period periodMax.empty() or period.exists()
tim-7 error Timing.repeat If there's a durationMax, there must be a duration durationMax.empty() or duration.exists()
tim-8 error Timing.repeat If there's a countMax, there must be a count countMax.empty() or count.exists()
tim-9 error 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 Timing.repeat If there's a timeOfDay, there cannot be a when, or vice versa timeOfDay.empty() or when.empty()

Summary

Mandatory: 4 elements
Must-Support: 1 element

Maturity: 4

 

Other representations of profile: CSV, Excel, Schematron