Dispense for Vicodin - in progress - PRN with pre-condition

{
  "resourceType" : "MedicationDispense",
  "id" : "meddisp0321",
  "status" : "in-progress",
  "medication" : {
    "concept" : {
      "coding" : [{
        "system" : "http://hl7.org/fhir/sid/ndc",
        "code" : "0074-3043-13",
        "display" : "Vicodin ES, 100 TABLET in 1 BOTTLE (0074-3043-13) (package)"
      }]
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "performer" : [{
    "actor" : {
      "reference" : "Practitioner/f006"
    }
  }],
  "authorizingPrescription" : [{
    "reference" : "MedicationRequest/medrx0321"
  }],
  "type" : {
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
      "code" : "RFP",
      "display" : "Refill - Part Fill"
    }]
  },
  "quantity" : {
    "value" : 30,
    "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
    "code" : "TAB"
  },
  "daysSupply" : {
    "value" : 10,
    "unit" : "Day",
    "system" : "http://unitsofmeasure.org",
    "code" : "d"
  },
  "whenPrepared" : "2015-01-15T10:20:00Z",
  "dosageInstruction" : [{
    "sequence" : 1,
    "text" : "1 tablet every four hours as needed for pain",
    "additionalInstruction" : [{
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "418914006",
        "display" : "Warning. May cause drowsiness. If affected do not drive or operate machinery. Avoid alcoholic drink (qualifier value)"
      }]
    }],
    "timing" : {
      "repeat" : {
        "frequency" : 1,
        "period" : 4,
        "periodUnit" : "h"
      }
    },
    "asNeededFor" : [{
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "203082005",
        "display" : "Fibromyalgia (disorder)"
      }]
    }],
    "route" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "26643006",
        "display" : "Oral Route"
      }]
    },
    "doseAndRate" : [{
      "type" : {
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
          "code" : "ordered",
          "display" : "Ordered"
        }]
      },
      "doseQuantity" : {
        "value" : 1,
        "unit" : "TAB",
        "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
        "code" : "TAB"
      }
    }]
  }]
}