http://hl7.org/fhir/StructureDefinition/Count|4.0.1

Base StructureDefinition for Count Type: A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies.
element_idtypes
Count
Count
Count.id
Count.extension
Count.value
Count.comparator
Count.unit
Count.system
Count.code