http://hl7.org/fhir/StructureDefinition/device-lastmaintenancetime|5.2.0

DateTime of the last time the device was subject to maintenance.

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	dateTime
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	dateTime