Liquid Medication - Phenytoin with link to prior prescription

{
  "resourceType": "MedicationRequest",
  "id": "medrx0312",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: medrx0312</p><p><b>identifier</b>: 12345689 (OFFICIAL)</p><p><b>status</b>: active</p><p><b>intent</b>: order</p><p><b>medication</b>: Phenytoin 25mg/ml oral suspension <span>(Details : {RxNorm code '1313112' = 'Phenytoin 25 MG/ML Oral Suspension', given as 'Phenytoin 25mg/ml oral suspension'})</span></p><p><b>subject</b>: <a>Donald Duck</a></p><p><b>authoredOn</b>: 15/01/2015</p><p><b>requester</b>: <a>Patrick Pump</a></p><p><b>reasonCode</b>: Status epilepticus (disorder) <span>(Details : {SNOMED CT code '230456007' = 'Status epilepticus', given as 'Status epilepticus (disorder)'})</span></p><p><b>note</b>: Patient should be counselled to ensure good dental hygiene</p><p><b>dosageInstruction</b>: </p><h3>DispenseRequests</h3><table><tr><td>-</td><td><b>ValidityPeriod</b></td><td><b>NumberOfRepeatsAllowed</b></td><td><b>Quantity</b></td><td><b>ExpectedSupplyDuration</b></td></tr><tr><td>*</td><td>15/01/2015 --&gt; 15/01/2016</td><td>3</td><td>360 mL<span> (Details: UCUM code mL = 'mL')</span></td><td>30 days<span> (Details: UCUM code d = 'd')</span></td></tr></table><h3>Substitutions</h3><table><tr><td>-</td><td><b>Allowed[x]</b></td><td><b>Reason</b></td></tr><tr><td>*</td><td>true</td><td>Continuing therapy <span>(Details : {http://terminology.hl7.org/CodeSystem/v3-ActReason code 'CT' = 'continuing therapy', given as 'Continuing therapy'})</span></td></tr></table><p><b>priorPrescription</b>: <a>MedicationRequest/medrx0304</a></p></div>"

  "resourceType" : "MedicationRequest",
  "id" : "medrx0312",
  "identifier" : [{
    "use" : "official",
    "system" : "http://www.bmc.nl/portal/prescriptions",
    "value" : "12345689"
  }],
  "priorPrescription" : {
    "reference" : "MedicationRequest/medrx0304"

  },
  "identifier": [
    {
      "use": "official",
      "system": "http://www.bmc.nl/portal/prescriptions",
      "value": "12345689"

  "status" : "active",
  "intent" : "order",
  "medication" : {
    "concept" : {
      "coding" : [{
        "system" : "http://www.nlm.nih.gov/research/umls/rxnorm",
        "code" : "1313112",
        "display" : "phenytoin 25 MG/ML Oral Suspension"
      }]

    }
  ],
  "status": "active",
  "intent": "order",
  "medicationCodeableConcept": {
    "coding": [
      {
        "system": "http://www.nlm.nih.gov/research/umls/rxnorm",
        "code": "1313112",
        "display": "Phenytoin 25mg/ml oral suspension"
      }
    ]

  },
  "subject": {
    "reference": "Patient/pat1",
    "display": "Donald Duck"

  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"

  },
  "authoredOn": "2015-01-15",
  "requester": {
    "reference": "Practitioner/f007",
    "display": "Patrick Pump"

  "authoredOn" : "2015-01-15",
  "requester" : {
    "reference" : "Practitioner/f007",
    "display" : "Patrick Pump"

  },
  "reasonCode": [
    {
      "coding": [
        {
          "system": "http://snomed.info/sct",
          "code": "230456007",
          "display": "Status epilepticus (disorder)"
        }
      ]
    }
  ],
  "note": [
    {
      "text": "Patient should be counselled to ensure good dental hygiene"

  "reason" : [{
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "230456007",
        "display" : "Status epilepticus (finding)"
      }]

    }
  ],
  "dosageInstruction": [
    {
      "sequence": 1,
      "text": "100mg (4ml) three times daily",
      "timing": {
        "repeat": {
          "frequency": 3,
          "period": 1,
          "periodUnit": "d"
        }
      },
      "route": {
        "coding": [
          {
            "system": "http://snomed.info/sct",
            "code": "26643006",
            "display": "Oral Route (qualifier value)"
          }
        ]

  }],
  "note" : [{
    "text" : "Patient should be counselled to ensure good dental hygiene"
  }],
  "dosageInstruction" : [{
    "sequence" : 1,
    "text" : "100mg (4ml) three times daily",
    "timing" : {
      "repeat" : {
        "frequency" : 3,
        "period" : 1,
        "periodUnit" : "d"
      }
    },
    "route" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "26643006",
        "display" : "Oral Route (qualifier value)"
      }]
    },
    "doseAndRate" : [{
      "type" : {
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
          "code" : "ordered",
          "display" : "Ordered"
        }]

      },
      "doseAndRate": [
        {
          "type": {
            "coding": [
              {
                "system": "http://terminology.hl7.org/CodeSystem/dose-rate-type",
                "code": "ordered",
                "display": "Ordered"
              }
            ]
          },
          "doseQuantity": {
            "value": 100,
            "unit": "mg",
            "system": "http://unitsofmeasure.org",
            "code": "mg"
          }
        }
      ]
    }
  ],
  "dispenseRequest": {
    "validityPeriod": {
      "start": "2015-01-15",
      "end": "2016-01-15"

      "doseQuantity" : {
        "value" : 100,
        "unit" : "mg",
        "system" : "http://unitsofmeasure.org",
        "code" : "mg"
      }
    }]
  }],
  "dispenseRequest" : {
    "validityPeriod" : {
      "start" : "2015-01-15",
      "end" : "2016-01-15"

    },
    "numberOfRepeatsAllowed": 3,
    "quantity": {
      "value": 360,
      "unit": "mL",
      "system": "http://unitsofmeasure.org",
      "code": "mL"

    "numberOfRepeatsAllowed" : 3,
    "quantity" : {
      "value" : 360,
      "unit" : "mL",
      "system" : "http://unitsofmeasure.org",
      "code" : "mL"

    },
    "expectedSupplyDuration": {
      "value": 30,
      "unit": "days",
      "system": "http://unitsofmeasure.org",
      "code": "d"

    "expectedSupplyDuration" : {
      "value" : 30,
      "unit" : "days",
      "system" : "http://unitsofmeasure.org",
      "code" : "d"

    }
  },
  "substitution": {
    "allowedBoolean": true,
    "reason": {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
          "code": "CT",
          "display": "Continuing therapy"
        }
      ]

  "substitution" : {
    "allowedBoolean" : true,
    "reason" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/v3-ActReason",
        "code" : "CT",
        "display" : "Continuing therapy"
      }]

    }
  },
  "priorPrescription": {
    "reference": "MedicationRequest/medrx0304"

  }
}