{
  "resourceType" : "DocumentReference",
  "masterIdentifier" : " Identifier ", 
  "identifier" : [" Identifier "], 
  "subject" : " Reference(Patient|Practitioner|Group|Device) ", 
  "type" : " CodeableConcept ", 
  "class" : " CodeableConcept ", 
  "author" : [" Reference(Practitioner|Organization|Device|Patient|RelatedPerson) "], 
  "custodian" : " Reference(Organization) ", 
  "authenticator" : " Reference(Practitioner|Organization) ", 
  "created" : "<dateTime>", 
  "indexed" : "<instant>", 
  "status" : "<code>", 
  "docStatus" : " CodeableConcept ", 
  "relatesTo" : [{ 
    "code" : "<code>", 
    "target" : " Reference(DocumentReference) " 
  }],
  "description" : "<string>",
  "securityLabel" : [" CodeableConcept "],
  "content" : [{
    "attachment" : " Attachment ", 
    "format" : [" Coding "] 
  }],
  "context" : { 
    "encounter" : " Reference(Encounter) ", 
    "event" : [" CodeableConcept "], 
    "period" : " Period ", 
    "facilityType" : " CodeableConcept ", 
    "practiceSetting" : " CodeableConcept ", 
    "sourcePatientInfo" : " Reference(Patient) ", 
    "related" : [{ 
      "identifier" : " Identifier ", 
      "ref" : " Reference(Any) " 
    }]
  }
}