Example with sub-requests derived from the request

{
  "resourceType": "ServiceRequest",
  "id": "subrequest",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: subrequest</p><p><b>basedOn</b>: Original Request</p><p><b>replaces</b>: Previous allergy test</p><p><b>requisition</b>: A13848392</p><p><b>status</b>: active</p><p><b>intent</b>: instance-order</p><p><b>priority</b>: routine</p><p><b>code</b>: Peanut IgG <span>(Details : {LOINC code '35542-0' = 'Peanut IgG Ab [Mass/volume] in Serum)</span></p><p><b>subject</b>: <a>Patient/dicom</a></p><p><b>occurrence</b>: 08/05/2013 9:33:27 AM</p><p><b>requester</b>: <a>Dr. Adam Careful</a></p><p><b>performerType</b>: Nurse <span>(Details : {[not stated] code 'null' = 'null', given as 'Qualified nurse'})</span></p><p><b>reasonCode</b>: Check for Peanut Allergy <span>(Details )</span></p><p><b>bodySite</b>: Right arm <span>(Details : {[not stated] code 'null' = 'null', given as 'Right arm'})</span></p></div>"

  "resourceType" : "ServiceRequest",
  "id" : "subrequest",
  "basedOn" : [{
    "display" : "Original Request"
  }],
  "replaces" : [{
    "display" : "Previous allergy test"
  }],
  "requisition" : {
    "value" : "A13848392"

  },
  "basedOn": [
    {
      "display": "Original Request"
    }
  ],
  "replaces": [
    {
      "display": "Previous allergy test"

  "status" : "active",
  "intent" : "instance-order",
  "priority" : "routine",
  "code" : {
    "concept" : {
      "coding" : [{
        "system" : "http://loinc.org",
        "code" : "35542-0"
      }],
      "text" : "Peanut IgG"

    }
  ],
  "requisition": {
    "value": "A13848392"
  },
  "status": "active",
  "intent": "instance-order",
  "priority": "routine",
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "35542-0"
      }
    ],
    "text": "Peanut IgG"

  },
  "subject": {
    "reference": "Patient/dicom"

  "subject" : {
    "reference" : "Patient/dicom"

  },
  "occurrenceDateTime": "2013-05-08T09:33:27+07:00",
  "requester": {
    "reference": "Practitioner/example",
    "display": "Dr. Adam Careful"

  "occurrenceDateTime" : "2013-05-08T09:33:27+07:00",
  "requester" : {
    "reference" : "Practitioner/example",
    "display" : "Dr. Adam Careful"

  },
  "performerType": {
    "coding": [
      {
        "display": "Qualified nurse"
      }
    ],
    "text": "Nurse"

  "performerType" : {
    "coding" : [{
      "display" : "Qualified nurse"
    }],
    "text" : "Nurse"

  },
  "reasonCode": [
    {
      "text": "Check for Peanut Allergy"
    }
  ],
  "bodySite": [
    {
      "coding": [
        {
          "display": "Right arm"
        }
      ],
      "text": "Right arm"

  "reason" : [{
    "concept" : {
      "text" : "Check for Peanut Allergy"

    }
  ]

  }]

}