<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="spark1908" />
  <meta>
    <versionId value="spark2608" />
    <lastUpdated value="2016-02-02T11:53:49.275+00:00" />
  </meta>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="4" />
  </extension>
  <url value="http://hl7.no/fhir/StructureDefinition/hncObservation" />
  <name value="hncObservation" />
  <status value="draft" />
  <date value="2015-09-22T20:02:49+10:00" />
  <description value="Base StructureDefinition for Observation Resource " />
  <requirements value="Observations are a key aspect of healthcare.  This resource is used to capture those that do not require more sophisticated mechanisms." />
  <fhirVersion value="1.0.1" />
  <mapping>
    <identity value="v2" />
    <uri value="http://hl7.org/v2" />
    <name value="HL7 v2" />
  </mapping>
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM" />
  </mapping>
  <mapping>
    <identity value="w5" />
    <uri value="http://hl7.org/fhir/w5" />
    <name value="W5 Mapping" />
  </mapping>
  <kind value="resource" />
  <constrainedType value="Observation" />
  <abstract value="false" />
  <base value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <differential>
    <element>
      <path value="Observation" />
      <short value="Measurements and simple assertions" />
      <definition value="Measurements and simple assertions made about a patient, device or other subject." />
      <comments value="Used for simple observations such as device measurements, laboratory atomic results, vital signs, height, weight, smoking status, comments, etc.  Other resources are used to provide context for observations such as lab reports, etc." />
      <alias value="Vital Signs" />
      <alias value="Measurement" />
      <alias value="Results" />
      <alias value="Tests" />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Observation" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="OBX" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="Observation[classCode=OBS, moodCode=EVN]" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="clinical.diagnostics" />
      </mapping>
    </element>
    <element>
      <path value="Observation.identifier" />
      <short value="Unique Id for this particular observation" />
      <definition value="A unique identifier for the simple observation instance." />
      <requirements value="Allows observations to be distinguished and referenced." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="Identifier" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="OBX.21" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="id" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="id" />
      </mapping>
    </element>
    <element>
      <path value="Observation.category.coding.system" />
      <short value="Identity of the terminology system" />
      <definition value="The identification of the code system that defines the meaning of the symbol in the code." />
      <comments value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously." />
      <requirements value="Need to be unambiguous about the source of the definition of the symbol." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://hl7.org/fhir/observation-category" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.3" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="./codeSystem" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem" />
      </mapping>
    </element>
    <element>
      <path value="Observation.category.coding.code" />
      <short value="Symbol in syntax defined by the system" />
      <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)." />
      <requirements value="Need to refer to a particular code in the system." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="code" />
      </type>
      <fixedCode value="laboratory" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.1" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="./code" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code" />
      </mapping>
    </element>
    <element>
      <path value="Observation.category.coding.display" />
      <short value="Representation defined by the system" />
      <definition value="A representation of the meaning of the code in the system, following the rules of the system." />
      <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know  the system." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="string" />
      </type>
      <fixedString value="Laboratory" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.2 - but note this is not well followed" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="CV.displayName" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName" />
      </mapping>
    </element>
    <element>
      <path value="Observation.category.text" />
      <short value="Plain text representation of the concept" />
      <definition value="A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user." />
      <comments value="Very often the text is the same as a displayName of one of the codings." />
      <requirements value="The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="string" />
      </type>
      <fixedString value="Laboratory" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.9. But note many systems use C*E.2 for this" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="./originalText[mediaType/code=&quot;text/plain&quot;]/data" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText" />
      </mapping>
    </element>
    <element>
      <path value="Observation.code.coding" />
      <short value="NLK coding system: https://helsedirektoratet.no/helsefaglige-kodeverk/laboratoriekodeverket" />
      <definition value="A reference to a code defined by a terminology system." />
      <comments value="Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.  Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labelled as UserSelected = true." />
      <requirements value="Allows for translations and alternate encodings within a code system.  Also supports communication of the same instance to systems requiring different encodings." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Coding" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.1-8, C*E.10-22" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="union(., ./translation)" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding" />
      </mapping>
    </element>
    <element>
      <path value="Observation.code.coding.system" />
      <short value="NLK coding system" />
      <definition value="The identification of the code system that defines the meaning of the symbol in the code." />
      <comments value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously." />
      <requirements value="Need to be unambiguous about the source of the definition of the symbol." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="urn:oid:2.16.578.1.12.4.1.1.7280" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.3" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="./codeSystem" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem" />
      </mapping>
    </element>
    <element>
      <path value="Observation.subject" />
      <short value="Who and/or what this is about" />
      <definition value="The patient, or group of patients, location, or device whose characteristics (direct or indirect) are described by the observation and into whose record the observation is placed.  Comments: Indirect characteristics may be those of a specimen, fetus, donor,  other observer (for example a relative or EMT), or any observation made about the subject." />
      <comments value="One would expect this element to be a cardinality  of 1..1.  The only circumstance in which the subject can be missing is when the observation is made by a device that does not know the patient. In this case, the observation SHALL be matched to a patient through some context/channel matching technique, and at this point, the observation should be updated.  If the target of the observation is different than the subject, the general extension [observation-focal-subject](extension-observation-focal-subject.html).  may be used.  However, the distinction between the patient's own value for an observation versus that of the fetus, or the donor or blood product unit, etc., are often specified in the observation code." />
      <requirements value="Observations have no value if you don't know who or what they're about." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.no/fhir/StructureDefinition/LabPatientNorway" />
        <aggregation value="contained" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="PID-3" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="participation[typeCode=SBJ]" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="who.focus" />
      </mapping>
    </element>
    <element>
      <path value="Observation.encounter" />
      <short value="Healthcare event during which this observation is made" />
      <definition value="The healthcare event  (e.g. a patient and healthcare provider interaction) during which this observation is made." />
      <requirements value="For some observations it may be important to know the link between an observation and a particular encounter." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.org/fhir/StructureDefinition/Encounter" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="PV1" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN]" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="context" />
      </mapping>
    </element>
    <element>
      <path value="Observation.effective[x]" />
      <short value="Clinically relevant time/time-period for observation, samplingdate" />
      <definition value="The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the &quot;physiologically relevant time&quot;. This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself." />
      <comments value="At least a date should be present unless this observation is a historical report." />
      <requirements value="Knowing when an observation was deemed true is important to its relevance as well as determining trends." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="dateTime" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="OBX-14, and/or OBX-19 after v2.4  (depends on who observation made)" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="effectiveTime" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="when.done" />
      </mapping>
    </element>
    <element>
      <path value="Observation.performer" />
      <short value="Who is responsible for the observation" />
      <definition value="Who was responsible for asserting the observed value as &quot;true&quot;." />
      <requirements value="May give a degree of confidence in the observation and also indicates where follow-up questions should be directed." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.no/fhir/StructureDefinition/LabOrganizationNorway" />
        <aggregation value="contained" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="OBX.15 / (Practitioner)  OBX-16,  PRT-5:PRT-4='RO' /  (Device)  OBX-18 , PRT-10:PRT-4='EQUIP' / (Organization)  OBX-23,  PRT-8:PRT-4='PO'" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="participation[typeCode=PRF]" />
      </mapping>
      <mapping>
        <identity value="w5" />
        <map value="who.actor" />
      </mapping>
    </element>
    <element>
      <path value="Observation.value[x]" />
      <short value="Actual result a quantity and string" />
      <definition value="The information determined as a result of making the observation, if the information has a simple value." />
      <comments value="Normally, an observation will have either a value or a set of related observations. A few observations (e.g. Apgar score) may have both a value and related observations (for an Apgar score, the observations from which the measure is derived). If a value is present, the datatype for this element should be determined by Observation.code. This element has a variable name depending on the type as follows: valueQuantity, valueCodeableConcept, valueString, valueRange, valueRatio, valueSampledData, valueAttachment, valueTime, valueDateTime, or valuePeriod. (The name format is &quot;'value' + the type name&quot; with a capital on the first letter of the type).   If the data element is usually coded or if the type associated with the Observation.value defines a coded value, use CodeableConcept instead of string datatype even if the value is uncoded text.  A value set is bound to the ValueCodeableConcept element.  For boolean values use valueCodeableConcept and select codes from [HL7 Version 2 Table 0136](v2/0136/index.html). These &quot;yes/no&quot; concepts can be mapped to the display name &quot;true/false&quot; or other mutually exclusive terms that may be needed.   For further discussion and examples see the  [notes section](observation.html#4.20.4) below." />
      <requirements value="An observation exists to have a value, though it may not if it is in error, or it represents a group of observations." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Quantity" />
      </type>
      <type>
        <code value="string" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="OBX.2, OBX.5, OBX.6" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="value" />
      </mapping>
    </element>
    <element>
      <path value="Observation.dataAbsentReason" />
      <short value="Why the result is missing" />
      <definition value="Provides a reason why the expected value in the element Observation.value[x] is missing." />
      <comments value="Null or exceptional values can be represented two ways in FHIR Observations.  One way is to simply include them in the value set and represent the exceptions in the value.  For example, measurement values for a serology test could be  &quot;detected&quot;, &quot;not detected&quot;, &quot;inconclusive&quot;, or  &quot;specimen unsatisfactory&quot;.   The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values.  For example, the dataAbsentReason code &quot;error&quot; could be used when the measurement was not completed.  Because of these options, use-case agreements are required to interpret general observations for exceptional values." />
      <requirements value="For many results it is necessary to handle exceptional values in measurements." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <condition value="obs-6" />
      <binding>
        <strength value="extensible" />
        <description value="Codes specifying why the result (Observation.value[x]) is missing." />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/observation-valueabsentreason" />
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="v2" />
        <map value="N/A" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="value.nullFlavor" />
      </mapping>
    </element>
    <element>
      <path value="Observation.interpretation" />
      <short value="High, low, normal, uses existing values in source system" />
      <definition value="The assessment made based on the result of the observation.  Intended as a simple compact code often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result. Otherwise known as abnormal flag." />
      <requirements value="For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result." />
      <alias value="Abnormal Flag" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="extensible" />
        <description value="Codes identifying interpretations of observations with the content as displayd in Lab System." />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/observation-interpretation" />
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="v2" />
        <map value="OBX-8" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="interpretationCode" />
      </mapping>
    </element>
    <element>
      <path value="Observation.interpretation.coding" />
      <short value="Code defined by a terminology system" />
      <definition value="A reference to a code defined by a terminology system." />
      <comments value="Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.  Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labelled as UserSelected = true." />
      <requirements value="Allows for translations and alternate encodings within a code system.  Also supports communication of the same instance to systems requiring different encodings." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="Coding" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.1-8, C*E.10-22" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="union(., ./translation)" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding" />
      </mapping>
    </element>
    <element>
      <path value="Observation.comments" />
      <short value="Comments about result if available, example errors " />
      <definition value="May include statements about significant, unexpected or unreliable values, or information about the source of the value where this may be relevant to the interpretation of the result." />
      <requirements value="Need to be able to provide free text additional information." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="string" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="NTE.3 (partner NTE to OBX, or sometimes another (child?) OBX)" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="subjectOf.observationEvent[code=&quot;annotation&quot;].value" />
      </mapping>
    </element>
    <element>
      <path value="Observation.bodySite" />
      <short value="Observed body part" />
      <definition value="Indicates the site on the subject's body where the observation was made (i.e. the target site)." />
      <comments value="Only used if not implicit in code found in Observation.code.  If the use case requires BodySite to be handled as a separate resource instead of an inline coded element (e.g. to identify and track separately) then use the standard extension[ body-site-instance](extension-body-site-instance.html)." />
      <requirements value="Knowing where the observation is made is important for tracking if multiple sites are possible." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="example" />
        <description value="Codes describing anatomical locations. May include laterality." />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/body-site" />
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="v2" />
        <map value="OBX-20" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="targetSiteCode" />
      </mapping>
    </element>
    <element>
      <path value="Observation.bodySite.coding.system" />
      <short value="NLK coding system - Anatomisk-lokalisasjon" />
      <definition value="The identification of the code system that defines the meaning of the symbol in the code." />
      <comments value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...).  OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should de-reference to some definition that establish the system clearly and unambiguously." />
      <requirements value="Need to be unambiguous about the source of the definition of the symbol." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="urn:oid:2.16.578.1.12.4.1.1.8352" />
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="C*E.3" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="./codeSystem" />
      </mapping>
      <mapping>
        <identity value="orim" />
        <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem" />
      </mapping>
    </element>
    <element>
      <path value="Observation.method" />
      <short value="How it was done" />
      <definition value="Indicates the mechanism used to perform the observation." />
      <comments value="Only used if not implicit in code for Observation.code." />
      <requirements value="In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="example" />
        <description value="Methods for simple observations." />
        <valueSetReference>
          <reference value="http://hl7.org/fhir/ValueSet/observation-methods" />
        </valueSetReference>
      </binding>
      <mapping>
        <identity value="v2" />
        <map value="OBX-17" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="methodCode" />
      </mapping>
    </element>
    <element>
      <path value="Observation.specimen" />
      <short value="Specimen used for this observation" />
      <definition value="The specimen that was used when this observation was made." />
      <comments value="Observations are not made on specimens themselves; they are made on a subject, but usually by the means of a specimen. Note that although specimens are often involved, they are not always tracked and reported explicitly. Also note that observation resources may be used in contexts that track the specimen explicitly (e.g. Diagnostic Report)." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.no/fhir/StructureDefinition/LabSpecimenNorway" />
        <aggregation value="contained" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="SPM segment" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="participation[typeCode=SPC].specimen" />
      </mapping>
    </element>
    <element>
      <path value="Observation.device" />
      <short value="(Measurement) Device" />
      <definition value="The device used to generate the observation data." />
      <comments value="An extension should be used if further typing of the device is needed.  Devices used to support obtaining an observation can be represented using either extension or through the Observation.related element." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.org/fhir/StructureDefinition/Device" />
        <aggregation value="contained" />
      </type>
      <type>
        <code value="Reference" />
        <profile value="http://hl7.org/fhir/StructureDefinition/DeviceMetric" />
        <aggregation value="contained" />
      </type>
      <mapping>
        <identity value="v2" />
        <map value="OBX-17 / PRT -10" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="participation[typeCode=DEV]" />
      </mapping>
    </element>
    <element>
      <path value="Observation.related" />
      <short value="Resource related to this observation" />
      <definition value="A  reference to another resource (usually another Observation but could  also be a QuestionnaireAnswer) whose relationship is defined by the relationship type code." />
      <comments value="For a discussion on the ways Observations can assembled in groups together see [Notes below](observation.html#4.20.4)." />
      <requirements value="Normally, an observation will have either a value or a set of related observations. A few observations (e.g. Apgar score) may have both a value and a set of related observations or sometimes QuestionnaireResponse  from which the measure is derived." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="Relationships established by OBX-4 usage" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="outBoundRelationship" />
      </mapping>
    </element>
    <element>
      <path value="Observation.related.target" />
      <short value="Resource that is related to this one" />
      <definition value="A reference to the observation or [[[QuestionnaireResponse]]] resource that is related to this observation." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Reference" />
        <profile value="http://hl7.no/fhir/StructureDefinition/hncObservation" />
      </type>
      <type>
        <code value="Reference" />
        <profile value="http://hl7.org/fhir/StructureDefinition/QuestionnaireResponse" />
      </type>
      <mapping>
        <identity value="rim" />
        <map value=".targetObservation" />
      </mapping>
    </element>
    <element>
      <path value="Observation.component" />
      <short value="Component results" />
      <definition value="Some observations have multiple component observations.  These component observations are expressed as separate code value pairs that share the same attributes.  Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations." />
      <comments value="For a discussion on the ways Observations can assembled in groups together see [Notes below](observation.html#4.20.4)." />
      <requirements value="Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable).   However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation." />
      <min value="0" />
      <max value="0" />
      <type>
        <code value="BackboneElement" />
      </type>
      <isSummary value="true" />
      <mapping>
        <identity value="v2" />
        <map value="containment by OBX-4?" />
      </mapping>
      <mapping>
        <identity value="rim" />
        <map value="outBoundRelationship[typeCode=COMP]" />
      </mapping>
    </element>
  </differential>
</StructureDefinition>