R4 Draft for Comment

This page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions

Substanceamount.profile.xml

Modeling and Methodology Work GroupMaturity Level: N/ABallot Status: Informative

Raw XML (canonical form)

StructureDefinition for SubstanceAmount

<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="SubstanceAmount"/> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
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          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="The logical name of the element">Name</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Information about the use of the element">Flags</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Minimum and Maximum # of times the the element can appear in the instance">Card.</a> 
          </th> 
          <th class="hierarchy" style="width: 100px">
            <a href="formats.html#table" title="Reference to the type of the element">Type</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Additional information about the element">Description &amp; Constraints</a> 
            <span style="float: right">
              <a href="formats.html#table" title="Legend for this format">
                <img alt="doco" src="help16.png" style="background-color: inherit"/> 
              </a> 
            </span> 
          </th> 
        </tr> 
        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <a href="datatypes-definitions.html#SubstanceAmount" title="SubstanceAmount : Chemical substances are a single substance type whose primary defining
             element is the molecular structure. Chemical substances shall be defined on the basis
             of their complete covalent molecular structure; the presence of a salt (counter-ion) and/or
             solvates (water, alcohols) is also captured. Purity, grade, physical form or particle
             size are not taken into account in the definition of a chemical substance or in the assignment
             of a Substance ID.">SubstanceAmount</a> 
            <a name="SubstanceAmount"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
            <a href="versions.html#std-process" style="padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold; color:
             black; background-color: #efefef" title="Ballot Status = Draft">D</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="element.html">Element</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Chemical substances are a single substance type whose primary defining element is the
             molecular structure. Chemical substances shall be defined on the basis of their complete
             covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water,
             alcohols) is also captured. Purity, grade, physical form or particle size are not taken
             into account in the definition of a chemical substance or in the assignment of a Substance
             ID
            <br/>  Elements defined in Ancestors: 
            <a href="element.html#Element" title="unique id for the element within a resource (for internal references). This may be any
             string value that does not contain spaces.">id</a> , 
            <a href="element.html#Element" title="May be used to represent additional information that is not part of the basic definition
             of the element. In order to make the use of extensions safe and manageable, there is a
             strict set of governance  applied to the definition and use of extensions. Though any
             implementer is allowed to define an extension, there is a set of requirements that SHALL
             be met as part of the definition of the extension.">extension</a> 
          </td> 
        </tr> 

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            <a href="datatypes-definitions.html#SubstanceAmount.amount_x_" title="SubstanceAmount.amount[x] : Used to capture quantitative values for a variety of elements.
             If only limits are given, the arithmetic mean would be the average. If only a single definite
             value for a given element is given, it would be captured in this field.">amount[x]</a> 
            <a name="SubstanceAmount.amount_x_"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Used to capture quantitative values for a variety of elements. If only limits are given,
             the arithmetic mean would be the average. If only a single definite value for a given
             element is given, it would be captured in this field</td> 
        </tr> 

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            <span title="A measured amount (or an amount that can potentially be measured). Note that measured
             amounts include amounts that are not precisely quantified, including amounts involving
             arbitrary units and floating currencies.">amountQuantity</span> 
          </td> 
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            <a href="datatypes.html#Quantity">Quantity</a> 
          </td> 
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            <span title="A set of ordered Quantities defined by a low and high limit.">amountRange</span> 
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            <a href="datatypes.html#Range">Range</a> 
          </td> 
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            <span title="A sequence of Unicode characters">amountString</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <a href="datatypes.html#string">string</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px"/> 
        </tr> 

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            <a href="datatypes-definitions.html#SubstanceAmount.amountType" title="SubstanceAmount.amountType : Most elements that require a quantitative value will also
             have a field called amount type. Amount type should always be specified because the actual
             value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative
             amounts of substances or molecular fragments it is essential to indicate whether the amount
             refers to a mole ratio or weight ratio. For any given element an effort should be made
             to use same the amount type for all related definitional elements.">amountType</a> 
            <a name="SubstanceAmount.amountType"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#CodeableConcept">CodeableConcept</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Most elements that require a quantitative value will also have a field called amount type.
             Amount type should always be specified because the actual value of the amount is often
             dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular
             fragments it is essential to indicate whether the amount refers to a mole ratio or weight
             ratio. For any given element an effort should be made to use same the amount type for
             all related definitional elements</td> 
        </tr> 

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
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            <a href="datatypes-definitions.html#SubstanceAmount.amountText" title="SubstanceAmount.amountText : A textual comment on a numeric value.">amountText</a> 
            <a name="SubstanceAmount.amountText"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">A textual comment on a numeric value</td> 
        </tr> 

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAMQfAOvGUf7ztuvPMf/78/fkl/Pbg+u8Rvjqteu2Pf3zxPz36Pz0z+vTmPzurPvuw
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            FEhIdcAYJdYASFRUQhQkLCwkOFwcdEBAXhVabE52ecDahKy0oIQA7" style="background-color: white; background-color: inherit" title="Element"/>  
            <a href="datatypes-definitions.html#SubstanceAmount.referenceRange" title="SubstanceAmount.referenceRange : Reference range of possible or expected values.">referenceRange</a> 
            <a name="SubstanceAmount.referenceRange"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="element.html">Element</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Reference range of possible or expected values</td> 
        </tr> 

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/>  
            <a href="datatypes-definitions.html#SubstanceAmount.referenceRange.lowLimit" title="SubstanceAmount.referenceRange.lowLimit : Lower limit possible or expected.">lowLimit</a> 
            <a name="SubstanceAmount.referenceRange.lowLimit"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#Quantity">Quantity</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Lower limit possible or expected</td> 
        </tr> 

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            <img alt="." class="hierarchy" src="data: image/png;base64,R0lGODlhEAAQAOZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
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            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///////yH5BAEAAH8ALAAAAAAQABAAAAfNgH+Cg36FfoOIhH4JBxBghYl/hQ
            kNAV0IVT5GkJKLCwtQaSsSdx9aR26Gcwt2IkQaNRI6dBERIzCFDSgWSW8WCDkbBnoOQ3uFARc/JQJfCAZlT0x4ZFyFBxdNQT9ZCBN
            WKQoKUQ+FEDgcdTIAV14YDmg2CgSFA0hmQC5TLE4VRTdrKJAoxOeFCzZSwsw4U6BCizwUQhQyEaAPiAwCVNCY0FCNnA6GPAwYoETI
            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/>  
            <a href="datatypes-definitions.html#SubstanceAmount.referenceRange.highLimit" title="SubstanceAmount.referenceRange.highLimit : Upper limit possible or expected.">highLimit</a> 
            <a name="SubstanceAmount.referenceRange.highLimit"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; background-color: white" title="This element is included in summaries">Σ</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="datatypes.html#Quantity">Quantity</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">Upper limit possible or expected</td> 
        </tr> 

        <tr> 
          <td class="hierarchy" colspan="5">
            <br/>  
            <a href="formats.html#table" title="Legend for this format">
              <img alt="doco" src="help16.png" style="background-color: inherit"/>  Documentation for this format
            </a> 
          </td> 
        </tr> 
      </table> 
    </div> 
  </text> 
  <url value="http://hl7.org/fhir/StructureDefinition/SubstanceAmount"/> 
  <name value="SubstanceAmount"/> 
  <status value="draft"/> 
  <date value="2017-12-20T15:52:34+11:00"/> 
  <publisher value="HL7 FHIR Standard"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
  </contact> 
  <description value="Base StructureDefinition for SubstanceAmount Type: Chemical substances are a single substance
   type whose primary defining element is the molecular structure. Chemical substances shall
   be defined on the basis of their complete covalent molecular structure; the presence of
   a salt (counter-ion) and/or solvates (water, alcohols) is also captured. Purity, grade,
   physical form or particle size are not taken into account in the definition of a chemical
   substance or in the assignment of a Substance ID."/> 
  <fhirVersion value="3.2.0"/> 
  <mapping> 
    <identity value="w5"/> 
    <uri value="http://hl7.org/fhir/w5"/> 
    <name value="W5 Mapping"/> 
  </mapping> 
  <mapping> 
    <identity value="rim"/> 
    <uri value="http://hl7.org/v3"/> 
    <name value="RIM Mapping"/> 
  </mapping> 
  <kind value="complex-type"/> 
  <abstract value="false"/> 
  <type value="SubstanceAmount"/> 
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Element"/> 
  <derivation value="specialization"/> 
  <snapshot> 
    <element id="SubstanceAmount">
      <path value="SubstanceAmount"/> 
      <short value="Chemical substances are a single substance type whose primary defining element is the
       molecular structure. Chemical substances shall be defined on the basis of their complete
       covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water,
       alcohols) is also captured. Purity, grade, physical form or particle size are not taken
       into account in the definition of a chemical substance or in the assignment of a Substance
       ID"/> 
      <definition value="Chemical substances are a single substance type whose primary defining element is the
       molecular structure. Chemical substances shall be defined on the basis of their complete
       covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water,
       alcohols) is also captured. Purity, grade, physical form or particle size are not taken
       into account in the definition of a chemical substance or in the assignment of a Substance
       ID."/> 
      <min value="0"/> 
      <max value="*"/> 
      <condition value="ele-1"/> 
      <constraint> 
        <key value="ele-1"/> 
        <severity value="error"/> 
        <human value="All FHIR elements must have a @value or children"/> 
        <expression value="hasValue() | (children().count() &gt; id.count())"/> 
        <xpath value="@value|f:*|h:div"/> 
        <source value="Element"/> 
      </constraint> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
      <mapping> 
        <identity value="w5"/> 
        <map value="clinical.medication"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.id">
      <path value="SubstanceAmount.id"/> 
      <representation value="xmlAttr"/> 
      <short value="xml:id (or equivalent in JSON)"/> 
      <definition value="unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces."/> 
      <min value="0"/> 
      <max value="1"/> 
      <base> 
        <path value="Element.id"/> 
        <min value="0"/> 
        <max value="1"/> 
      </base> 
      <type> 
        <code value="string"/> 
      </type> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.extension">
      <path value="SubstanceAmount.extension"/> 
      <slicing> 
        <discriminator> 
          <type value="value"/> 
          <path value="url"/> 
        </discriminator> 
        <description value="Extensions are always sliced by (at least) url"/> 
        <rules value="open"/> 
      </slicing> 
      <short value="Additional Content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. In order to make the use of extensions safe and manageable, there is a
       strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone."/> 
      <alias value="extensions"/> 
      <alias value="user content"/> 
      <min value="0"/> 
      <max value="*"/> 
      <base> 
        <path value="Element.extension"/> 
        <min value="0"/> 
        <max value="*"/> 
      </base> 
      <type> 
        <code value="Extension"/> 
      </type> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.amount[x]">
      <path value="SubstanceAmount.amount[x]"/> 
      <short value="Used to capture quantitative values for a variety of elements. If only limits are given,
       the arithmetic mean would be the average. If only a single definite value for a given
       element is given, it would be captured in this field"/> 
      <definition value="Used to capture quantitative values for a variety of elements. If only limits are given,
       the arithmetic mean would be the average. If only a single definite value for a given
       element is given, it would be captured in this field."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <type> 
        <code value="Range"/> 
      </type> 
      <type> 
        <code value="string"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.amountType">
      <path value="SubstanceAmount.amountType"/> 
      <short value="Most elements that require a quantitative value will also have a field called amount type.
       Amount type should always be specified because the actual value of the amount is often
       dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular
       fragments it is essential to indicate whether the amount refers to a mole ratio or weight
       ratio. For any given element an effort should be made to use same the amount type for
       all related definitional elements"/> 
      <definition value="Most elements that require a quantitative value will also have a field called amount type.
       Amount type should always be specified because the actual value of the amount is often
       dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular
       fragments it is essential to indicate whether the amount refers to a mole ratio or weight
       ratio. For any given element an effort should be made to use same the amount type for
       all related definitional elements."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="CodeableConcept"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.amountText">
      <path value="SubstanceAmount.amountText"/> 
      <short value="A textual comment on a numeric value"/> 
      <definition value="A textual comment on a numeric value."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="string"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange">
      <path value="SubstanceAmount.referenceRange"/> 
      <short value="Reference range of possible or expected values"/> 
      <definition value="Reference range of possible or expected values."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Element"/> 
      </type> 
      <constraint> 
        <key value="ele-1"/> 
        <severity value="error"/> 
        <human value="All FHIR elements must have a @value or children"/> 
        <expression value="hasValue() | (children().count() &gt; id.count())"/> 
        <xpath value="@value|f:*|h:div"/> 
        <source value="Element"/> 
      </constraint> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange.id">
      <path value="SubstanceAmount.referenceRange.id"/> 
      <representation value="xmlAttr"/> 
      <short value="xml:id (or equivalent in JSON)"/> 
      <definition value="unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces."/> 
      <min value="0"/> 
      <max value="1"/> 
      <base> 
        <path value="Element.id"/> 
        <min value="0"/> 
        <max value="1"/> 
      </base> 
      <type> 
        <code value="string"/> 
      </type> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.referenceRange.extension">
      <path value="SubstanceAmount.referenceRange.extension"/> 
      <slicing> 
        <discriminator> 
          <type value="value"/> 
          <path value="url"/> 
        </discriminator> 
        <description value="Extensions are always sliced by (at least) url"/> 
        <rules value="open"/> 
      </slicing> 
      <short value="Additional Content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. In order to make the use of extensions safe and manageable, there is a
       strict set of governance  applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone."/> 
      <alias value="extensions"/> 
      <alias value="user content"/> 
      <min value="0"/> 
      <max value="*"/> 
      <base> 
        <path value="Element.extension"/> 
        <min value="0"/> 
        <max value="*"/> 
      </base> 
      <type> 
        <code value="Extension"/> 
      </type> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.referenceRange.lowLimit">
      <path value="SubstanceAmount.referenceRange.lowLimit"/> 
      <short value="Lower limit possible or expected"/> 
      <definition value="Lower limit possible or expected."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange.highLimit">
      <path value="SubstanceAmount.referenceRange.highLimit"/> 
      <short value="Upper limit possible or expected"/> 
      <definition value="Upper limit possible or expected."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
  </snapshot> 
  <differential> 
    <element id="SubstanceAmount">
      <path value="SubstanceAmount"/> 
      <short value="Chemical substances are a single substance type whose primary defining element is the
       molecular structure. Chemical substances shall be defined on the basis of their complete
       covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water,
       alcohols) is also captured. Purity, grade, physical form or particle size are not taken
       into account in the definition of a chemical substance or in the assignment of a Substance
       ID"/> 
      <definition value="Chemical substances are a single substance type whose primary defining element is the
       molecular structure. Chemical substances shall be defined on the basis of their complete
       covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water,
       alcohols) is also captured. Purity, grade, physical form or particle size are not taken
       into account in the definition of a chemical substance or in the assignment of a Substance
       ID."/> 
      <min value="0"/> 
      <max value="*"/> 
      <mapping> 
        <identity value="w5"/> 
        <map value="clinical.medication"/> 
      </mapping> 
    </element> 
    <element id="SubstanceAmount.amount[x]">
      <path value="SubstanceAmount.amount[x]"/> 
      <short value="Used to capture quantitative values for a variety of elements. If only limits are given,
       the arithmetic mean would be the average. If only a single definite value for a given
       element is given, it would be captured in this field"/> 
      <definition value="Used to capture quantitative values for a variety of elements. If only limits are given,
       the arithmetic mean would be the average. If only a single definite value for a given
       element is given, it would be captured in this field."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <type> 
        <code value="Range"/> 
      </type> 
      <type> 
        <code value="string"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.amountType">
      <path value="SubstanceAmount.amountType"/> 
      <short value="Most elements that require a quantitative value will also have a field called amount type.
       Amount type should always be specified because the actual value of the amount is often
       dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular
       fragments it is essential to indicate whether the amount refers to a mole ratio or weight
       ratio. For any given element an effort should be made to use same the amount type for
       all related definitional elements"/> 
      <definition value="Most elements that require a quantitative value will also have a field called amount type.
       Amount type should always be specified because the actual value of the amount is often
       dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular
       fragments it is essential to indicate whether the amount refers to a mole ratio or weight
       ratio. For any given element an effort should be made to use same the amount type for
       all related definitional elements."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="CodeableConcept"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.amountText">
      <path value="SubstanceAmount.amountText"/> 
      <short value="A textual comment on a numeric value"/> 
      <definition value="A textual comment on a numeric value."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="string"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange">
      <path value="SubstanceAmount.referenceRange"/> 
      <short value="Reference range of possible or expected values"/> 
      <definition value="Reference range of possible or expected values."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Element"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange.lowLimit">
      <path value="SubstanceAmount.referenceRange.lowLimit"/> 
      <short value="Lower limit possible or expected"/> 
      <definition value="Lower limit possible or expected."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
    <element id="SubstanceAmount.referenceRange.highLimit">
      <path value="SubstanceAmount.referenceRange.highLimit"/> 
      <short value="Upper limit possible or expected"/> 
      <definition value="Upper limit possible or expected."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Quantity"/> 
      </type> 
      <isSummary value="true"/> 
    </element> 
  </differential> 
</StructureDefinition> 

Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.