http://hl7.org/fhir/StructureDefinition/largeValue|5.2.0

The value of an integer that exceeds the bounds of the base int type.
NameFlagsCardTypeDescription & Constraints
Extension
0..1A value larger than the bounds of the base integer datatype
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueDecimal *
1..?decimal