Medication Code - Patch - Fentanyl

{
  "resourceType" : "MedicationAdministration",
  "id" : "medadmin0312",
  "identifier" : [{
    "use" : "official",
    "system" : "http://www.bmc.nl/portal/administrations",
    "value" : "12345689"
  }],
  "status" : "completed",
  "medication" : {
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "333919005",
        "display" : "Fentanyl 25micrograms/hour patch (product)"
      }]
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "occurrencePeriod" : {
    "start" : "2015-01-15T22:03:00+01:00",
    "end" : "2015-01-16T02:03:00+01:00"
  },
  "performer" : [{
    "actor" : {
      "reference" : {
        "reference" : "Practitioner/f007",
        "display" : "Patrick Pump"
      }
    }
  }],
  "request" : {
    "reference" : "MedicationRequest/medrx0305"
  },
  "dosage" : {
    "text" : "apply one patch three times per week",
    "dose" : {
      "value" : 1,
      "unit" : "patch",
      "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
      "code" : "PATCH"
    }
  }
}