This page is part of the FHIR Specification (v0.0.82: DSTU 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2
StructureDefinition for Period
<StructureDefinition xmlns="http://hl7.org/fhir"> <id value="Period"/> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"><!-- Snipped for brevity --></div> </text> <url value="http://hl7.org/fhir/StructureDefinition/Period"/> <name value="Period"/> <publisher value="HL7 FHIR Standard"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact> <description value="Base StructureDefinition for Period Resource"/> <status value="draft"/> <date value="2015-03-27T00:13:00+11:00"/> <mapping> <identity value="v2"/> <uri value="http://hl7.org/v2"/> <name value="HL7 v2"/> </mapping> <mapping> <identity value="rim"/> <uri value="http://hl7.org/v3"/> <name value="RIM"/> </mapping> <type value="type"/> <abstract value="false"/> <base value="http://hl7.org/fhir/StructureDefinition/Element"/> <snapshot> <element> <path value="Period"/> <short value="Time range defined by start and end date/time"/> <definition value="A time period defined by a start and end date and optionally time."/> <comments value="This is not a duration - that's a measure of time (a separate type), but a duration that occurs at a fixed value of time. A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times"). If a duration might be required, specify the type as Interval|Duration."/> <min value="1"/> <max value="1"/> <type> <code value="Period"/> </type> <constraint> <key value="per-1"/> <name value="Start <= End"/> <severity value="error"/> <human value="If present, start SHALL have a lower value than end"/> <xpath value="not(exists(f:start)) or not(exists(f:end)) or (f:start/@value <= f:end/@value)"/> </constraint> <mapping> <identity value="v2"/> <map value="DR"/> </mapping> <mapping> <identity value="rim"/> <map value="IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed ="true" and highClosed="true"]"/> </mapping> </element> <element> <path value="Period.id"/> <representation value="xmlAttr"/> <short value="xml:id (or equivalent in JSON)"/> <definition value="unique id for the element within a resource (for internal references)."/> <min value="0"/> <max value="1"/> <type> <code value="id"/> </type> <mapping> <identity value="rim"/> <map value="n/a"/> </mapping> </element> <element> <path value="Period.extension"/> <short value="Additional Content defined by implementations"/> <definition value="May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/> <comments value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/> <alias value="extensions"/> <alias value="user content"/> <min value="0"/> <max value="*"/> <type> <code value="Extension"/> </type> <mapping> <identity value="rim"/> <map value="n/a"/> </mapping> </element> <element> <path value="Period.start"/> <short value="Starting time with inclusive boundary"/> <definition value="The start of the period. The boundary is inclusive."/> <comments value="If the low element is missing, the meaning is that the low boundary is not known."/> <min value="0"/> <max value="1"/> <type> <code value="dateTime"/> </type> <condition value="per-1"/> <mapping> <identity value="v2"/> <map value="DR.1"/> </mapping> <mapping> <identity value="rim"/> <map value="./low"/> </mapping> </element> <element> <path value="Period.end"/> <short value="End time with inclusive boundary, if not ongoing"/> <definition value="The end of the period. If the end of the period is missing, it means that the period is ongoing."/> <comments value="The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has a end value of 2012-02-03."/> <min value="0"/> <max value="1"/> <type> <code value="dateTime"/> </type> <condition value="per-1"/> <mapping> <identity value="v2"/> <map value="DR.2"/> </mapping> <mapping> <identity value="rim"/> <map value="./high"/> </mapping> </element> </snapshot> <differential> <element> <path value="Period"/> <short value="Time range defined by start and end date/time"/> <definition value="A time period defined by a start and end date and optionally time."/> <comments value="This is not a duration - that's a measure of time (a separate type), but a duration that occurs at a fixed value of time. A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times"). If a duration might be required, specify the type as Interval|Duration."/> <min value="1"/> <max value="1"/> <type> <code value="Element"/> </type> <constraint> <key value="per-1"/> <name value="Start <= End"/> <severity value="error"/> <human value="If present, start SHALL have a lower value than end"/> <xpath value="not(exists(f:start)) or not(exists(f:end)) or (f:start/@value <= f:end/@value)"/> </constraint> <mapping> <identity value="v2"/> <map value="DR"/> </mapping> <mapping> <identity value="rim"/> <map value="IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed ="true" and highClosed="true"]"/> </mapping> </element> <element> <path value="Period.start"/> <short value="Starting time with inclusive boundary"/> <definition value="The start of the period. The boundary is inclusive."/> <comments value="If the low element is missing, the meaning is that the low boundary is not known."/> <min value="0"/> <max value="1"/> <type> <code value="dateTime"/> </type> <condition value="per-1"/> <mapping> <identity value="v2"/> <map value="DR.1"/> </mapping> <mapping> <identity value="rim"/> <map value="./low"/> </mapping> </element> <element> <path value="Period.end"/> <short value="End time with inclusive boundary, if not ongoing"/> <definition value="The end of the period. If the end of the period is missing, it means that the period is ongoing."/> <comments value="The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has a end value of 2012-02-03."/> <min value="0"/> <max value="1"/> <type> <code value="dateTime"/> </type> <condition value="per-1"/> <mapping> <identity value="v2"/> <map value="DR.2"/> </mapping> <mapping> <identity value="rim"/> <map value="./high"/> </mapping> </element> </differential> </StructureDefinition>
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.