2. Thanks, Internet! http://www.quickmeme.com/

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<value xsi:type="CD" nullFlavor="NA"/>
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<code code='413477004' displayName='Allergen or Pseudoallergen'
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</observation>
negationInd="true"

8. <observation classCode="OBS" moodCode="EVN" nullFlavor="ASKU">
<code code="106190000" displayName="Allergy"
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<value xsi:type="CD" nullFlavor="NA"/>
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<observation classCode="OBS" moodCode="EVN">
<code code="420134006" codeSystem="2.16.840.1.113883.5.4"
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<value code="420134006" codeSystem="2.16.840.1.113883.6.96"
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<code code="0" codeSystem="2.16.840.1.113883.6.69"
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