instance-specific billing information for a device with time-dependent tax rate (id = "device")

<?xml version="1.0" encoding="UTF-8"?>

<ChargeItemDefinition xmlns="http://hl7.org/fhir"> 
  <id value="device"/> 
  <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"><p> <b> Generated Narrative: ChargeItemDefinition</b> <a name="device"> </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 ChargeItemDefinition &quot;device&quot; </p> </div> <p> <b> url</b> : <code> http://sap.org/ChargeItemDefinition/device-123</code> </p> <p> <b> identifier</b> : id: urn:oid:2.16.840.1.113883.4.642.29.2</p> <p> <b> status</b> : active</p> <p> <b> description</b> : Financial details for  custom made device</p> <p> <b> instance</b> : <a href="broken-link.html">Device/12345</a> </p> <blockquote> <p> <b> applicability</b> </p> <h3> Conditions</h3> <table class="grid"><tr> <td> -</td> <td> <b> Description</b> </td> <td> <b> Language</b> </td> <td> <b> Expression</b> </td> </tr> <tr> <td> *</td> <td> Verify ChargeItem pertains to Device 12345</td> <td> text/fhirpath</td> <td> <span title="  syntax of expression may be incorrect, but you get the idea ">%context.service.suppliedItem.reference='Device/12345'</span> </td> </tr> </table> </blockquote> <blockquote> <p> <b> propertyGroup</b> </p> <blockquote> <p> <b> priceComponent</b> </p> <p> <b> type</b> : base</p> <p> <b> code</b> : Verkaufspreis (netto) <span style="background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki"> (billing-attributes#VK)</span> </p> </blockquote> </blockquote> <blockquote> <p> <b> propertyGroup</b> </p> <blockquote> <p> <b> applicability</b> </p> </blockquote> <h3> PriceComponents</h3> <table class="grid"><tr> <td> -</td> <td> <b> Type</b> </td> <td> <b> Code</b> </td> <td> <b> Factor</b> </td> </tr> <tr> <td> *</td> <td> tax</td> <td> Mehrwersteuersatz <span style="background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki"> (billing-attributes#MWST)</span> </td> <td> 1.19</td> </tr> </table> </blockquote> <blockquote> <p> <b> propertyGroup</b> </p> <blockquote> <p> <b> applicability</b> </p> </blockquote> <h3> PriceComponents</h3> <table class="grid"><tr> <td> -</td> <td> <b> Type</b> </td> <td> <b> Code</b> </td> <td> <b> Factor</b> </td> </tr> <tr> <td> *</td> <td> tax</td> <td> Mehrwersteuersatz <span style="background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki"> (billing-attributes#MWST)</span> </td> <td> 1.07</td> </tr> </table> </blockquote> </div> </text> <url value="http://sap.org/ChargeItemDefinition/device-123"/> 
  <identifier> 
    <system value="urn:ietf:rfc:3986"/> 
    <value value="urn:oid:2.16.840.1.113883.4.642.29.2"/> 
  </identifier> 
  <status value="active"/>  
  <description value="Financial details for  custom made device"/> 
  <instance> 
    <reference value="Device/12345"/> 
  </instance> 
      <!--    definition only applicable if the ChargeItem pertains to the device this   
    -->  
  <applicability> 
    <condition> 
      <description value="Verify ChargeItem pertains to Device 12345"/> 
      <language value="text/fhirpath"/> 
          <!--    syntax of expression may be incorrect, but you get the idea   -->
      <expression value="%context.service.suppliedItem.reference='Device/12345'"/> 
    </condition> 
  </applicability> 
      <!--    the base price for this device is constant, so no additional rules apply   -->
  <propertyGroup> 
    <priceComponent> 
      <type value="base"/> 
      <code> 
        <coding> 
          <system value="http://fhir.de/CodeSystem/billing-attributes"/> 
          <code value="VK"/> 
          <display value="Verkaufspreis (netto)"/> 
        </coding> 
      </code> 
      <amount> 
        <value value="67.44"/> 
        <currency value="EUR"/> 
      </amount> 
    </priceComponent> 
  </propertyGroup> 
      <!--    the tax applicable to this device changes after 2018-04-01   -->
  <propertyGroup> 
    <applicability> 
      <condition> 
        <description value="Gültigkeit Steuersatz"/> 
        <language value="text/fhirpath"/> 
            <!--    syntax of expression may be incorrect, but you get the idea   -->
        <expression value="%context.occurenceDateTime &gt; '2018-04-01'"/> 
      </condition> 
    </applicability> 
    <priceComponent> 
      <type value="tax"/> 
      <code> 
        <coding> 
          <system value="http://fhir.de/CodeSystem/billing-attributes"/> 
          <code value="MWST"/> 
          <display value="Mehrwersteuersatz"/> 
        </coding> 
      </code> 
      <factor value="1.19"/> 
    </priceComponent> 
  </propertyGroup> 
  <propertyGroup> 
    <applicability> 
      <condition> 
        <description value="Gültigkeit Steuersatz"/> 
        <language value="text/fhirpath"/> 
            <!--    syntax of expression may be incorrect, but you get the idea   -->
        <expression value="%context.occurenceDateTime &lt;= '2018-04-01'"/> 
      </condition> 
    </applicability> 
    <priceComponent> 
      <type value="tax"/> 
      <code> 
        <coding> 
          <system value="http://fhir.de/CodeSystem/billing-attributes"/> 
          <code value="MWST"/> 
          <display value="Mehrwersteuersatz"/> 
        </coding> 
      </code> 
      <factor value="1.07"/> 
    </priceComponent> 
  </propertyGroup> 
</ChargeItemDefinition>