Dosage with a Pre-Condition - Alprazolam

{
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  "text" : {
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    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: MedicationAdministration</b><a name=\"medadmin0311\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource MedicationAdministration &quot;medadmin0311&quot; </p></div><p><b>status</b>: completed</p><h3>Medications</h3><table class=\"grid\"><tr><td>-</td><td><b>Reference</b></td></tr><tr><td>*</td><td><a name=\"med0304\"> </a><blockquote><p/><p><a name=\"med0304\"> </a></p><p><b>code</b>: Alprazolam 0.25mg Oral Tablet <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/5.1.0/CodeSystem-v3-rxNorm.html\">RxNorm</a>#308047)</span></p></blockquote></td></tr></table><p><b>subject</b>: <a href=\"patient-example-a.html\">Patient/pat1: Donald Duck</a> &quot;Donald DUCK&quot;</p><p><b>occurence</b>: 2015-01-15T22:03:00+01:00 --&gt; 2015-01-16T02:03:00+01:00</p><blockquote><p><b>performer</b></p><h3>Actors</h3><table class=\"grid\"><tr><td>-</td><td><b>Reference</b></td></tr><tr><td>*</td><td><a href=\"practitioner-example-f007-sh.html\">Practitioner/f007: Patrick Pump</a> &quot;Simone HEPS&quot;</td></tr></table></blockquote><h3>Reasons</h3><table class=\"grid\"><tr><td>-</td><td><b>Concept</b></td></tr><tr><td>*</td><td>Dysmenorrhea <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#266599000)</span></td></tr></table><p><b>request</b>: <a href=\"medicationrequest0305.html\">MedicationRequest/medrx0305</a></p><h3>Dosages</h3><table class=\"grid\"><tr><td>-</td><td><b>Text</b></td><td><b>Route</b></td><td><b>Dose</b></td></tr><tr><td>*</td><td>0.25mg PO every 6-12 hours as needed for menses from Jan 15-20, 2015.  Do not exceed more than 4mg per day</td><td>Oral Route <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#26643006)</span></td><td>1 TAB<span style=\"background: LightGoldenRodYellow\"> (Details: http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm code TAB = 'Tablet')</span></td></tr></table></div>"
  },
  "contained" : [{
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        "code" : "308047",
        "display" : "Alprazolam 0.25mg Oral Tablet"
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    }
  }],
  "status" : "completed",
  "medication" : {
    "reference" : {
      "reference" : "#med0304"
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  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "occurencePeriod" : {
    "start" : "2015-01-15T22:03:00+01:00",
    "end" : "2015-01-16T02:03:00+01:00"
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  "performer" : [{
    "actor" : {
      "reference" : {
        "reference" : "Practitioner/f007",
        "display" : "Patrick Pump"
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    }
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  "reason" : [{
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
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        "display" : "Dysmenorrhea"
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    }
  }],
  "request" : {
    "reference" : "MedicationRequest/medrx0305"
  },
  "dosage" : {
    "text" : "0.25mg PO every 6-12 hours as needed for menses from Jan 15-20, 2015.  Do not exceed more than 4mg per day",
    "route" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "26643006",
        "display" : "Oral Route"
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    "dose" : {
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      "unit" : "TAB",
      "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
      "code" : "TAB"
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