Example with sub-requests derived from the request

{
  "resourceType" : "ServiceRequest",
  "id" : "subrequest",
  "basedOn" : [{
    "display" : "Original Request"
  }],
  "replaces" : [{
    "display" : "Previous allergy test"
  }],
  "requisition" : {
    "value" : "A13848392"
  },
  "status" : "active",
  "intent" : "instance-order",
  "priority" : "routine",
  "code" : {
    "concept" : {
      "coding" : [{
        "system" : "http://loinc.org",
        "code" : "35542-0"
      }],
      "text" : "Peanut IgG"
    }
  },
  "subject" : {
    "reference" : "Patient/dicom"
  },
  "occurrenceDateTime" : "2013-05-08T09:33:27+07:00",
  "requester" : {
    "reference" : "Practitioner/example",
    "display" : "Dr. Adam Careful"
  },
  "performerType" : {
    "coding" : [{
      "display" : "Qualified nurse"
    }],
    "text" : "Nurse"
  },
  "reason" : [{
    "concept" : {
      "text" : "Check for Peanut Allergy"
    }
  }],
  "bodySite" : [{
    "coding" : [{
      "display" : "Right arm"
    }],
    "text" : "Right arm"
  }]
}