Class Observation

Measurements and simple assertions made about a patient, device or other subject.

Inheritance
System.Object
Resource
DomainResource
Observation
Implements
Inherited Members
Namespace: fhirCsR2.Models
Assembly: fhirCsR2.dll
Syntax
public class Observation : DomainResource, IFhirJsonSerializable

Properties

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_Comments

Extension container element for Comments

Declaration
public Element _Comments { get; set; }
Property Value
Type Description
Element
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_EffectiveDateTime

Extension container element for EffectiveDateTime

Declaration
public Element _EffectiveDateTime { get; set; }
Property Value
Type Description
Element
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_Issued

Extension container element for Issued

Declaration
public Element _Issued { get; set; }
Property Value
Type Description
Element
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_Status

Extension container element for Status

Declaration
public Element _Status { get; set; }
Property Value
Type Description
Element
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_ValueDateTime

Extension container element for ValueDateTime

Declaration
public Element _ValueDateTime { get; set; }
Property Value
Type Description
Element
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_ValueString

Extension container element for ValueString

Declaration
public Element _ValueString { get; set; }
Property Value
Type Description
Element
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_ValueTime

Extension container element for ValueTime

Declaration
public Element _ValueTime { get; set; }
Property Value
Type Description
Element
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BodySite

Knowing where the observation is made is important for tracking if multiple sites are possible.

Declaration
public CodeableConcept BodySite { get; set; }
Property Value
Type Description
CodeableConcept
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Category

A code that classifies the general type of observation being made. This is used for searching, sorting and display purposes.

Declaration
public CodeableConcept Category { get; set; }
Property Value
Type Description
CodeableConcept
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Code

Knowing what kind of observation is being made is essential to understanding the observation.

Declaration
public CodeableConcept Code { get; set; }
Property Value
Type Description
CodeableConcept
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Comments

Need to be able to provide free text additional information.

Declaration
public string Comments { get; set; }
Property Value
Type Description
System.String
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Component

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.

Declaration
public List<ObservationComponent> Component { get; set; }
Property Value
Type Description
fhirCsR2.Models.List<ObservationComponent>
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DataAbsentReason

For many results it is necessary to handle exceptional values in measurements.

Declaration
public CodeableConcept DataAbsentReason { get; set; }
Property Value
Type Description
CodeableConcept
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Device

The device used to generate the observation data.

Declaration
public Reference Device { get; set; }
Property Value
Type Description
Reference
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EffectiveDateTime

Knowing when an observation was deemed true is important to its relevance as well as determining trends.

Declaration
public string EffectiveDateTime { get; set; }
Property Value
Type Description
System.String
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EffectivePeriod

Knowing when an observation was deemed true is important to its relevance as well as determining trends.

Declaration
public Period EffectivePeriod { get; set; }
Property Value
Type Description
Period
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Encounter

For some observations it may be important to know the link between an observation and a particular encounter.

Declaration
public Reference Encounter { get; set; }
Property Value
Type Description
Reference
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Identifier

Allows observations to be distinguished and referenced.

Declaration
public List<Identifier> Identifier { get; set; }
Property Value
Type Description
fhirCsR2.Models.List<Identifier>
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Interpretation

For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.

Declaration
public CodeableConcept Interpretation { get; set; }
Property Value
Type Description
CodeableConcept
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Issued

The date and time this observation was made available to providers, typically after the results have been reviewed and verified.

Declaration
public string Issued { get; set; }
Property Value
Type Description
System.String
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Method

In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results.

Declaration
public CodeableConcept Method { get; set; }
Property Value
Type Description
CodeableConcept
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Performer

May give a degree of confidence in the observation and also indicates where follow-up questions should be directed.

Declaration
public List<Reference> Performer { get; set; }
Property Value
Type Description
fhirCsR2.Models.List<Reference>
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ReferenceRange

Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.

Declaration
public List<ObservationReferenceRange> ReferenceRange { get; set; }
Property Value
Type Description
fhirCsR2.Models.List<ObservationReferenceRange>
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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.

Declaration
public List<ObservationRelated> Related { get; set; }
Property Value
Type Description
fhirCsR2.Models.List<ObservationRelated>
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ResourceType

Resource Type Name

Declaration
public override string ResourceType { get; }
Property Value
Type Description
System.String
Overrides
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Specimen

The specimen that was used when this observation was made.

Declaration
public Reference Specimen { get; set; }
Property Value
Type Description
Reference
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Status

Need to track the status of individual results. Some results are finalized before the whole report is finalized.

Declaration
public string Status { get; set; }
Property Value
Type Description
System.String
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Subject

Observations have no value if you don't know who or what they're about.

Declaration
public Reference Subject { get; set; }
Property Value
Type Description
Reference
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ValueAttachment

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public Attachment ValueAttachment { get; set; }
Property Value
Type Description
Attachment
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ValueCodeableConcept

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public CodeableConcept ValueCodeableConcept { get; set; }
Property Value
Type Description
CodeableConcept
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ValueDateTime

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public string ValueDateTime { get; set; }
Property Value
Type Description
System.String
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ValuePeriod

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public Period ValuePeriod { get; set; }
Property Value
Type Description
Period
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ValueQuantity

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public Quantity ValueQuantity { get; set; }
Property Value
Type Description
Quantity
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ValueRange

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public Range ValueRange { get; set; }
Property Value
Type Description
Range
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ValueRatio

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public Ratio ValueRatio { get; set; }
Property Value
Type Description
Ratio
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ValueSampledData

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public SampledData ValueSampledData { get; set; }
Property Value
Type Description
SampledData
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ValueString

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public string ValueString { get; set; }
Property Value
Type Description
System.String
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ValueTime

An observation exists to have a value, though it may not if it is in error, or it represents a group of observations.

Declaration
public string ValueTime { get; set; }
Property Value
Type Description
System.String

Methods

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DeserializeJson(ref Utf8JsonReader, JsonSerializerOptions)

Deserialize a JSON object

Declaration
public void DeserializeJson(ref Utf8JsonReader reader, JsonSerializerOptions options)
Parameters
Type Name Description
Utf8JsonReader reader
JsonSerializerOptions options
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DeserializeJsonProperty(ref Utf8JsonReader, JsonSerializerOptions, String)

Deserialize a JSON property

Declaration
public void DeserializeJsonProperty(ref Utf8JsonReader reader, JsonSerializerOptions options, string propertyName)
Parameters
Type Name Description
Utf8JsonReader reader
JsonSerializerOptions options
System.String propertyName
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SerializeJson(Utf8JsonWriter, JsonSerializerOptions, Boolean)

Serialize to a JSON object

Declaration
public void SerializeJson(Utf8JsonWriter writer, JsonSerializerOptions options, bool includeStartObject = true)
Parameters
Type Name Description
Utf8JsonWriter writer
JsonSerializerOptions options
System.Boolean includeStartObject

Implements