http://hl7.org/fhir/StructureDefinition/allergyintolerance-abatement|5.2.0

The date or estimated date that the allergy or intolerance resolved. This is called abatement because of the many overloaded connotations associated with resolution.
NameFlagsCardTypeDescription & Constraints
Extension
0..1When the allergy or intolerance resolved
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueDateTime *
1..?dateTime
 
 
valueAge *
1..?Age
 
 
valuePeriod *
1..?Period
 
 
valueRange *
1..?Range
 
 
valueString *
1..?string