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value="ChargeItem.code.coding.code" /> <min value="1" /> </element> <element id="ChargeItem.code.coding:feelevel"> <path value="ChargeItem.code.coding" /> <sliceName value="feelevel" /> <min value="0" /> <max value="1" /> <binding> <strength value="required" /> <valueSet value="http://fhir.essilorluxottica.com/fhir/ValueSet/el-chargeItem-feelevel-vs" /> </binding> </element> <element id="ChargeItem.code.coding:feelevel.system"> <path value="ChargeItem.code.coding.system" /> <min value="1" /> <patternUri value="http://fhir.essilorluxottica.com/fhir/CodeSystem/el-chargeItem-feelevel-cs" /> </element> <element id="ChargeItem.code.coding:feelevel.code"> <path value="ChargeItem.code.coding.code" /> <min value="1" /> </element> <element id="ChargeItem.context"> <path value="ChargeItem.context" /> <min value="1" /> </element> <element id="ChargeItem.performingOrganization"> <path value="ChargeItem.performingOrganization" /> <min value="1" /> </element> <element id="ChargeItem.quantity"> <path 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