<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="substance-category" />
  <text>
    <status value="generated" />
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p>The narrative has been removed to reduce the size of the distribution of the Hl7.Fhir.Specification library</p>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-ballot-status">
    <valueString value="Informative" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="2" />
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="oo" />
  </extension>
  <url value="http://hl7.org/fhir/substance-category" />
  <identifier>
    <system value="urn:ietf:rfc:3986" />
    <value value="urn:oid:2.16.840.1.113883.4.642.1.470" />
  </identifier>
  <version value="3.0.0" />
  <name value="Substance Category Codes" />
  <status value="draft" />
  <experimental value="true" />
  <publisher value="HL7 Orders and Observations Workgroup" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://www.hl7.org/Special/committees/orders/index.cfm" />
    </telecom>
  </contact>
  <description value="Substance category codes" />
  <caseSensitive value="true" />
  <valueSet value="http://hl7.org/fhir/ValueSet/substance-category" />
  <content value="complete" />
  <concept>
    <code value="allergen" />
    <display value="Allergen" />
    <definition value="A substance that causes an allergic reaction." />
  </concept>
  <concept>
    <code value="biological" />
    <display value="Biological Substance" />
    <definition value="A substance that is produced by or extracted from a biological source." />
  </concept>
  <concept>
    <code value="body" />
    <display value="Body Substance" />
    <definition value="A substance that comes directly from a human or an animal (e.g. blood, urine, feces, tears, etc.)." />
  </concept>
  <concept>
    <code value="chemical" />
    <display value="Chemical" />
    <definition value="Any organic or inorganic substance of a particular molecular identity, including -- (i) any combination of such substances occurring in whole or in part as a result of a chemical reaction or occurring in nature and (ii) any element or uncombined radical (http://www.epa.gov/opptintr/import-export/pubs/importguide.pdf)." />
  </concept>
  <concept>
    <code value="food" />
    <display value="Dietary Substance" />
    <definition value="A food, dietary ingredient, or dietary supplement for human or animal." />
  </concept>
  <concept>
    <code value="drug" />
    <display value="Drug or Medicament" />
    <definition value="A substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in man or other animals (Federal Food Drug and Cosmetic Act)." />
  </concept>
  <concept>
    <code value="material" />
    <display value="Material" />
    <definition value="A finished product which is not normally ingested, absorbed or injected (e.g. steel, iron, wood, plastic and paper)." />
  </concept>
</CodeSystem>