http://hl7.org/fhir/StructureDefinition/event-recorded|5.2.0

Captures the recorded date of the event.
{
  "description": "Captures the recorded date of the event.",
  "package": "hl7.fhir.uv.extensions.r4@5.2.0",
  "date": "2018-08-22T00:00:00Z",
  "derivation": "constraint",
  "publisher": "HL7 International / FHIR Infrastructure",
  "fhirVersion": "4.0.1",
  "jurisdiction": [ {
    "coding": [ {
      "code": "001",
      "system": "http://unstats.un.org/unsd/methods/m49/m49.htm"
    } ]
  } ],
  "purpose": "This extension is defined to allow resources that do not have a suitable recorded date element to capture the time the event is recorded. For example, Communication resources in not-done status do not have an element to capture when the event was recorded.",
  "name": "EventRecorded",
  "mapping": [ {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": false,
  "resourceType": "StructureDefinition",
  "fhirversion": null,
  "title": "Event Recorded",
  "versionAlgorithmCoding": null,
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
    "valueCode": "can-bind"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 1,
    "_valueInteger": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical": "http://hl7.org/fhir/extensions/ImplementationGuide/hl7.fhir.uv.extensions"
      } ]
    }
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use",
    "_valueCode": {
      "extension": [ {
        "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical": "http://hl7.org/fhir/extensions/ImplementationGuide/hl7.fhir.uv.extensions"
      } ]
    }
  } ],
  "status": "active",
  "id": "08c0d1a6-851f-5e72-b250-c50ae0c1d0db",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/event-recorded",
  "identifier": null,
  "context": [ {
    "type": "element",
    "expression": "Communication"
  } ],
  "versionAlgorithmString": null,
  "fhir_id": null,
  "version": "5.2.0",
  "contact": [ {
    "name": "FHIR Infrastructure WG",
    "telecom": [ {
      "value": "http://www.hl7.org/Special/committees/fiwg",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}