description: Base StructureDefinition for Timing Type
package_name: hl7.fhir.r3.core
derivation: specialization
name: Timing
type: Timing
elements:
  event: {short: When the event occurs, type: dateTime, array: true, isSummary: true, index: 0}
  repeat:
    constraint:
      tim-8: {human: 'If there''s a countMax, there must be a count', severity: error, expression: countMax.empty() or count.exists()}
      tim-2: {human: 'if there''s a period, there needs to be period units', severity: error, expression: period.empty() or periodUnit.exists()}
      tim-5: {human: period SHALL be a non-negative value, severity: error, expression: period.exists() implies period >= 0}
      tim-7: {human: 'If there''s a durationMax, there must be a duration', severity: error, expression: durationMax.empty() or duration.exists()}
      tim-4: {human: duration SHALL be a non-negative value, severity: error, expression: duration.exists() implies duration >= 0}
      tim-1: {human: 'if there''s a duration, there needs to be duration units', severity: error, expression: duration.empty() or durationUnit.exists()}
      tim-10: {human: 'If there''s a timeOfDay, there cannot be be a when, or vice versa', severity: error, expression: timeOfDay.empty() or when.empty()}
      tim-9: {human: 'If there''s an offset, there must be a when (and not C, CM, CD, CV)', severity: error, expression: offset.empty() or (when.exists() and ((when in ('C' | 'CM' | 'CD' | 'CV')).not()))}
      tim-6: {human: 'If there''s a periodMax, there must be a period', severity: error, expression: periodMax.empty() or period.exists()}
    short: When the event is to occur
    type: Element
    isSummary: true
    index: 1
    elements:
      boundsRange: {short: 'Length/Range of lengths, or (Start and/or end) limits', type: Range, choiceOf: bounds, isSummary: true, index: 5}
      frequencyMax: {short: Event occurs up to frequencyMax times per period, type: integer, isSummary: true, index: 13}
      boundsPeriod: {short: 'Length/Range of lengths, or (Start and/or end) limits', type: Period, choiceOf: bounds, isSummary: true, index: 6}
      when: {short: Regular life events the event is tied to, type: code, array: true, isSummary: true, index: 19}
      offset: {short: Minutes from event (before or after), type: unsignedInt, isSummary: true, index: 20}
      periodUnit: {short: s | min | h | d | wk | mo | a - unit of time (UCUM), type: code, isSummary: true, index: 16}
      frequency: {short: Event occurs frequency times per period, type: integer, defaultValueInteger: 1, isSummary: true, index: 12}
      durationMax: {short: How long when it happens (Max), type: decimal, isSummary: true, index: 10}
      duration: {short: How long when it happens, type: decimal, isSummary: true, index: 9}
      bounds:
        short: Length/Range of lengths, or (Start and/or end) limits
        choices: [boundsDuration, boundsRange, boundsPeriod]
        isSummary: true
        index: 3
      boundsDuration: {short: 'Length/Range of lengths, or (Start and/or end) limits', type: Duration, choiceOf: bounds, isSummary: true, index: 4}
      durationUnit: {short: s | min | h | d | wk | mo | a - unit of time (UCUM), type: code, isSummary: true, index: 11}
      dayOfWeek: {short: mon | tue | wed | thu | fri | sat | sun, type: code, array: true, isSummary: true, index: 17}
      count: {short: Number of times to repeat, type: integer, isSummary: true, index: 7}
      periodMax: {short: Upper limit of period (3-4 hours), type: decimal, isSummary: true, index: 15}
      period: {short: Event occurs frequency times per period, type: decimal, isSummary: true, index: 14}
      countMax: {short: Maximum number of times to repeat, type: integer, isSummary: true, index: 8}
      timeOfDay: {short: Time of day for action, type: time, array: true, isSummary: true, index: 18}
  code: {short: BID | TID | QID | AM | PM | QD | QOD | Q4H | Q6H +, type: CodeableConcept, isSummary: true, index: 21}
package_version: 3.0.2
class: complex-type
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/Timing
base: http://hl7.org/fhir/StructureDefinition/Element
version: null