Patient reports they used the given patches over the last 30 days.

{
  "resourceType" : "MedicationStatement",
  "id" : "example008",
  "contained" : [{
    "resourceType" : "Medication",
    "id" : "med0309",
    "code" : {
      "coding" : [{
        "system" : "http://hl7.org/fhir/sid/ndc",
        "code" : "358793",
        "display" : "Nigroglycerin patch"
      }]
    },
    "doseForm" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "376251004",
        "display" : "Nitroglycerin 200 microgram/hour prolonged-release transdermal patch"
      }]
    }
  }],
  "status" : "recorded",
  "medication" : {
    "reference" : {
      "reference" : "#med0309"
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "note" : [{
    "text" : "Patient reports they used the given patches over the last 30 days"
  }],
  "dosage" : [{
    "doseAndRate" : [{
      "doseQuantity" : {
        "value" : 1,
        "unit" : "patch",
        "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
        "code" : "TPATH24"
      }
    }]
  }]
}