<?xml version="1.0" encoding="UTF-8"?>
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/*
  Copyright (c) 2011+, HL7, Inc.
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  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
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     this list of conditions and the following disclaimer in the documentation 
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     endorse or promote products derived from this software without specific 
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  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
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  Generated on Tue, May 19, 2026 20:26+0000 for FHIR v6.0.0-ballot4 

  Note: the schemas &amp; schematrons do not contain all of the rules about what makes resources
  valid. Implementers will still need to be familiar with the content of the specification and with
  any profiles that apply to the resources in order to make a conformant implementation.

-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://hl7.org/fhir" xmlns:xhtml="http://www.w3.org/1999/xhtml" targetNamespace="http://hl7.org/fhir" elementFormDefault="qualified" version="1.0">
  <xs:include schemaLocation="fhir-base.xsd"/>
  <xs:element name="ServiceRequest" type="ServiceRequest">
    <xs:annotation>
      <xs:documentation xml:lang="en">A record of a request for service such as diagnostic investigations, treatments, or operations to be performed. When the ServiceRequest is active, it represents an authorization to perform the service.</xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name="ServiceRequest">
    <xs:annotation>
      <xs:documentation xml:lang="en">A record of a request for service such as diagnostic investigations, treatments, or operations to be performed. When the ServiceRequest is active, it represents an authorization to perform the service.</xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="DomainResource">
        <xs:sequence>
          <xs:element name="identifier" minOccurs="0" maxOccurs="unbounded" type="Identifier">
            <xs:annotation>
              <xs:documentation xml:lang="en">Identifiers assigned to this order instance by the orderer and/or the receiver and/or order fulfiller.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="basedOn" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Plan/proposal/order fulfilled by this request.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="replaces" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The request takes the place of the referenced completed or terminated request(s).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="requisition" minOccurs="0" maxOccurs="1" type="Identifier">
            <xs:annotation>
              <xs:documentation xml:lang="en">A shared identifier common to all service requests that were authorized more or less simultaneously by a single author, representing the composite or group identifier.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="status" minOccurs="1" maxOccurs="1" type="RequestStatus">
            <xs:annotation>
              <xs:documentation xml:lang="en">The status of the order.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="statusReason" minOccurs="0" maxOccurs="unbounded" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Provides reason why the service request status is what it is. The statusReason can be used to explain the service request status.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="intent" minOccurs="1" maxOccurs="1" type="RequestIntent">
            <xs:annotation>
              <xs:documentation xml:lang="en">Whether the request is a proposal, plan, an original order or a reflex order.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="category" minOccurs="0" maxOccurs="unbounded" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">A code that classifies the service for searching, sorting and display purposes (e.g. &quot;Surgical Procedure&quot;).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="priority" minOccurs="0" maxOccurs="1" type="RequestPriority">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates how quickly the ServiceRequest should be addressed with respect to other requests.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="doNotPerform" minOccurs="0" maxOccurs="1" type="boolean">
            <xs:annotation>
              <xs:documentation xml:lang="en">Set this to true if the record is saying that the service/procedure should NOT be performed.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="code" minOccurs="0" maxOccurs="1" type="CodeableReference">
            <xs:annotation>
              <xs:documentation xml:lang="en">A code or reference that identifies a particular service (i.e., procedure, diagnostic investigation, or panel of investigations) that has been requested.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="orderDetail" type="ServiceRequest.OrderDetail" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">Additional details and instructions about how the services are to be delivered. For example, an order for a urinary catheter may have an order detail for an external or indwelling catheter, or an order for a bandage may require additional instructions specifying how the bandage should be applied. Questions or additional information to be gathered from a patient may be included here.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:choice minOccurs="0" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">An amount of service being requested.</xs:documentation>
            </xs:annotation>
            <xs:element name="quantityQuantity" type="Quantity"/>
            <xs:element name="quantityRatio" type="Ratio"/>
            <xs:element name="quantityRange" type="Range"/>
          </xs:choice>
          <xs:element name="subject" minOccurs="1" maxOccurs="1" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">On whom or what the service is to be performed. This is usually a human patient, but can also be requested on animals, groups of humans or animals, devices such as dialysis machines, or even locations (typically for environmental scans).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="focus" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The actual focus of a service request when it is not the subject of record representing something or someone associated with the subject such as a spouse, parent, fetus, or donor. The focus of a service request could also be an existing condition,  an intervention, the subject's diet,  another service request on the subject,  or a body structure such as tumor or implanted device.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="encounter" minOccurs="0" maxOccurs="1" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">An encounter that provides additional information about the healthcare context in which this request is made.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:choice minOccurs="0" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">The date/time at which the requested service should occur.</xs:documentation>
            </xs:annotation>
            <xs:element name="occurrenceDateTime" type="dateTime"/>
            <xs:element name="occurrencePeriod" type="Period"/>
            <xs:element name="occurrenceTiming" type="Timing"/>
          </xs:choice>
          <xs:element name="asNeeded" minOccurs="0" maxOccurs="1" type="boolean">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates that the service (e.g., procedure, lab test) should be performed when needed (Boolean option).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="asNeededFor" minOccurs="0" maxOccurs="unbounded" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates specific criteria that need to be met to perform the service (e.g., lab results or symptoms).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="authoredOn" minOccurs="0" maxOccurs="1" type="dateTime">
            <xs:annotation>
              <xs:documentation xml:lang="en">When the request transitioned to being actionable.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="requester" minOccurs="0" maxOccurs="1" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The individual who initiated the request and has responsibility for its activation.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="performerType" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Desired type of performer for doing the requested service.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="performer" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The desired performer for doing the requested service.  For example, the surgeon, dermatopathologist, endoscopist, etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="location" minOccurs="0" maxOccurs="unbounded" type="CodeableReference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The preferred location(s) where the procedure should actually happen in coded or free text form. E.g. at home or nursing day care center.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="reason" minOccurs="0" maxOccurs="unbounded" type="CodeableReference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The reason or the indication for requesting the service (e.g., procedure, lab test).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="insurance" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be needed for delivering the requested service.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="supportingInfo" minOccurs="0" maxOccurs="unbounded" type="CodeableReference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Additional clinical information about the patient or specimen that may influence the services or their interpretations. This information includes diagnosis, clinical findings and other observations. In laboratory ordering these are typically referred to as 'ask at order entry questions (AOEs).' This includes observations explicitly requested by the producer (filler) to provide context or supporting information needed to complete the order. For example, reporting the amount of inspired oxygen for blood gas measurements.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="bodyStructure" minOccurs="0" maxOccurs="1" type="CodeableReference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Anatomic location where the procedure should be performed. This is the target site.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="note" minOccurs="0" maxOccurs="unbounded" type="Annotation">
            <xs:annotation>
              <xs:documentation xml:lang="en">Any other notes and comments made about the service request. For example, internal billing notes.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="patientInstruction" type="ServiceRequest.PatientInstruction" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">Instructions in terms that are understood by the patient or consumer.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="relevantHistory" minOccurs="0" maxOccurs="unbounded" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">Key events in the history of the request.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="ServiceRequest.OrderDetail">
    <xs:annotation>
      <xs:documentation xml:lang="en">A record of a request for service such as diagnostic investigations, treatments, or operations to be performed. When the ServiceRequest is active, it represents an authorization to perform the service.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:choice minOccurs="0" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates the context of the order details by reference.</xs:documentation>
            </xs:annotation>
            <xs:element name="parameterFocusCodeableConcept" type="CodeableConcept"/>
            <xs:element name="parameterFocusReference" type="Reference"/>
            <xs:element name="parameterFocusCanonical" type="canonical"/>
          </xs:choice>
          <xs:element name="parameter" type="ServiceRequest.Parameter" minOccurs="1" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">The parameter details for the service being requested.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="ServiceRequest.Parameter">
    <xs:annotation>
      <xs:documentation xml:lang="en">A record of a request for service such as diagnostic investigations, treatments, or operations to be performed. When the ServiceRequest is active, it represents an authorization to perform the service.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="code" minOccurs="1" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">A value representing the additional detail or instructions for the order (e.g., catheter insertion, body elevation, descriptive device configuration and/or setting instructions).</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:choice minOccurs="1" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates a value for the order detail.</xs:documentation>
            </xs:annotation>
            <xs:element name="valueQuantity" type="Quantity"/>
            <xs:element name="valueRatio" type="Ratio"/>
            <xs:element name="valueRange" type="Range"/>
            <xs:element name="valueBoolean" type="boolean"/>
            <xs:element name="valueCodeableConcept" type="CodeableConcept"/>
            <xs:element name="valueString" type="string"/>
            <xs:element name="valuePeriod" type="Period"/>
          </xs:choice>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="ServiceRequest.PatientInstruction">
    <xs:annotation>
      <xs:documentation xml:lang="en">A record of a request for service such as diagnostic investigations, treatments, or operations to be performed. When the ServiceRequest is active, it represents an authorization to perform the service.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:choice minOccurs="0" maxOccurs="1" >
            <xs:annotation>
              <xs:documentation xml:lang="en">Instructions in terms that are understood by the patient or consumer.</xs:documentation>
            </xs:annotation>
            <xs:element name="instructionMarkdown" type="markdown"/>
            <xs:element name="instructionReference" type="Reference"/>
          </xs:choice>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:schema>
