Timing Repeat

$10 / year

Timing Repeat indicates a set of rules that describe when the event is to occur or should occur again. Many timing schedules are determined by regular repetitions.


Timing Repeat have Length/Range of lengths, or (Start and/or end) limits which indicates either a duration for the length of the timing schedule, a range of possible length, or outer bounds for start and/or end limits of the timing schedule. Timing.repeat.duration indicates How long this thing happens for when it happens. If durationMax is present, this element indicates the lower bound of the allowed range of the duration. For some events the duration is part of the definition of the event (e.g. Intravenous (IV) infusions, where the duration is implicit in the specified quantity and rate). For others, it’s part of the timing specification (e.g. exercise). Some activities are not instantaneous and need to be maintained for a period of time.

Note, though, that some systems include timing details in something like ‘Dosage instructions’ which is wider than just Timing; those systems do not use the Timing data type. Other systems use a set of ‘common’ codes – including, but usually not limited to, widely understood acronyms such as “bis in die (BID)” which means in Latin, twice a day. If a Timing.code is provided, the code is understood to be a complete statement of whatever is specified in the structured timing data (except for Timing.repeat.bounds, which applies to the code), and either the code or the data may be used to interpret the Timing. A structured timing specification should be provided whenever possible, unless the code is BID, ter in die (TID) which in Latin means three times a day, quater in die (QID) which in Latin means four times a day, ante meridiem (AM) which in Latin means Before Midday or Post Meridiem (PM) which in Latin means After Midday, which have a ubiquitous meaning.

These codes shall be understood as having the formal meanings. Note that BID, etc. are defined as ‘at institutionally specified times’. For example, an institution may choose that BID is “always at 7am and 6pm”. If it is inappropriate for this choice to be made, the code BID should not be used. Instead, a distinct organization-specific code should be used in place of the HL7-defined BID code and/or a structured representation should be used (in this case, timeOfDay).

Date Created


Last Modified




Update Frequency


Temporal Coverage


Spatial Coverage

United States


John Snow Labs; Health Level Seven International;

Source License URL

Source License Requirements


Source Citation



FHIR, HL7, Medical Terminology, Processes Data, Processes Information, Processes Documentation, Health Information Exchange, Electronic Health Records, FHIR Smart, Smart on FHIR

Other Titles

FHIR Timing Repeat Datatype, Electronic Health Records Exchange Through FHIR

Concept_NameName of the concept in the FHIR structure.stringrequired : 1
Computer_Ready_NameA Computer-ready name (e.g. a token) that identifies the structure - suitable for code generation. Note that this name (and other names relevant for code generation, including element & slice names, codes etc) may collide with reserved words in the relevant target language, and code generators will need to handle this.string-
TypeThe type the structure describes.string-
Dollar_RefThe "$ref" string value contains a Uniform Resource Identifier (URI) which identifies the location of the JSON value being referenced.string-
DescriptionA free text natural language description of the structure and its use.string-
ItemsThe value of the keyword should be an object or an array of objects. If the keyword value is an object, then for the data array to be valid each item of the array should be valid according to the schema in this value.string-
EnumThe enum is used to restrict a value to a fixed set of values. It must be an array with at least one element, where each element is unique.string-
Timing_Repeat_count#/definitions/ElementExtensions for count
Timing_Repeat_period#/definitions/ElementExtensions for period
Timing_Repeat_offset#/definitions/ElementExtensions for offset
Timing_Repeat_countMax#/definitions/ElementExtensions for countMax
Timing_Repeat_duration#/definitions/ElementExtensions for duration
Timing_Repeat_frequency#/definitions/ElementExtensions for frequency
Timing_Repeat_periodMax#/definitions/ElementExtensions for periodMax
Timing_Repeat_periodUnit#/definitions/ElementExtensions for periodUnit
Timing_Repeat_durationMax#/definitions/ElementExtensions for durationMax
Timing_Repeat_durationUnit#/definitions/ElementExtensions for durationUnit
Related Data Packages