Usage

Implementors are free to use the coded fields with the defined valuesets for inter-jurisdictional exchange, but coded values are not expected for death certificate submission. The underlying profile requires coded values for validity, so a null flavor value can be used as in Example1. Similarly the effective period is required, and null flavor values can be substituted. These constraints are expected to be relaxed in the ODH Usual Work profile prior to VRDR publication.

Note that the coded industry and occupation fields are bound to PHINVADs-hosted value sets. These are the only PHINVADs references in this IG. For NCHS provided coded values the specific vocabulary used will depend on the death year.

• Text Summary
• Differential Table
• Snapshot Table
• Snapshot Table (Must Support)
• All

This structure is derived from UsualWork

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	UsualWork	Usual Work
subject		1..1	Reference(Decedent)	The subject of an observation
valueCodeableConcept		0..1	CodeableConcept	Express the usual occupation using a coded value. If no coded value is available, use text. If the usual occupation is not available, explain using dataAbsentReason.
coding:occupationCDCCensus2018		0..1	Coding	Occupation Code
text		0..1	string	Occupation - Literal
component:odh-UsualIndustry		1..1	BackboneElement	UsualIndustry: The industry (type of business) in which the subject has worked for the longest duration while in the usual occupation. Express the usual industry using a coded value. If no coded value is available, use text. If the usual industry is not available, explain using dataAbsentReason.
valueCodeableConcept		0..1	CodeableConcept	Express the Industry using a coded value. If no coded value is available, use text. If the Industry is not available, explain using dataAbsentReason.
coding:industryCDCCensus2018		0..1	Coding	Industry Code
text		0..1	string	Industry - Literal
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Observation	I	0..*	UsualWork	Usual Work
id	Σ	0..1	string	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	Business Identifier for observation
basedOn	Σ	0..*	Reference(ServiceRequest)	The plan, proposal or order that is fulfilled in whole or in part by this observation
partOf	Σ	0..*	Reference(Procedure)	The larger procedure that this particular observation is a component or step
status	?!Σ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
category		0..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	1..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code
coding:Fixed_social-history	Σ	1..1	Coding	Social History
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: social-history
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
code	Σ	1..1	CodeableConcept	Type of observation (code / type) Binding: LOINCCodes (example): Codes identifying names of simple observations.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	1..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code
coding:Fixed_21843-8	Σ	1..1	Coding	History of Usual Occupation
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 21843-8
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
subject	Σ	1..1	Reference(Decedent)	The subject of an observation
focus	Σ	0..*	Reference(RelatedPerson)	What the observation is about, when it is not about the subject of record
encounter	Σ	0..1	Reference(Encounter)	Healthcare event during which this observation is made
Slices for effective[x]	Σ	0..1	Period	Clinically relevant time/time-period for observation Slice: Unordered, Closed by type:$this
effective[x]:effectivePeriod	Σ	0..1	Period	The period.start asserts when the usual occupation began. NOTE: If the period.start element is missing, the start of the usual occupation is not known. The period.end asserts when the usual occupation ended. If usual occupation is current, period.end should be omitted.
issued	Σ	0..1	instant	Date/Time this version was made available
performer	Σ	0..*	Reference(Practitioner | Organization | US Core Patient Profile | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	ΣI	0..1	CodeableConcept	Actual result Slice: Unordered, Closed by type:$this
value[x]:valueCodeableConcept	ΣI	0..1	CodeableConcept	Express the usual occupation using a coded value. If no coded value is available, use text. If the usual occupation is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	0..*	Coding	Code defined by a terminology system Slice: Unordered, Open by pattern:$this
coding:occupationCDCCensus2010	Σ	0..1	Coding	Occupation CDC Census 2010 Binding: Occupation CDC Census 2010 (required): Occupation CDC Census 2010
coding:occupationONETSOCDetailODH	Σ	0..1	Coding	Occupation ONETSOC Detail (ODH) Binding: Occupation ONETSOC Detail (ODH) (required): Occupation ONETSOC Detail (ODH)
coding:occupationCDCCensus2018	Σ	0..1	Coding	Occupation Code Binding: Occupation CDC Census 2018 (required): Occupation CDC Census 2018
text	Σ	0..1	string	Occupation - Literal
dataAbsentReason	I	0..1	CodeableConcept	The reason that there is no value available for the Occupation. Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
note		0..*	Annotation	Comments about the observation
derivedFrom	Σ	0..*	Reference(DocumentReference | Media | QuestionnaireResponse | Observation)	Related measurements the observation is made from
Slices for component	Σ	1..*	BackboneElement	Component results Slice: Unordered, Open by value:code
component:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Type of component observation (code / type) Binding: LOINCCodes (example): Codes identifying names of simple observations.
value[x]	Σ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	I	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:odh-UsualIndustry	Σ	1..1	BackboneElement	UsualIndustry: The industry (type of business) in which the subject has worked for the longest duration while in the usual occupation. Express the usual industry using a coded value. If no coded value is available, use text. If the usual industry is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	History of Usual industry Binding: LOINCCodes (example): Codes identifying names of simple observations. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 21844-6
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
value[x]	Σ	0..1	CodeableConcept	Express the Industry using a coded value. If no coded value is available, use text. If the Industry is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	0..*	Coding	Code defined by a terminology system Slice: Unordered, Open by pattern:$this
coding:industryCDCCensus2010	Σ	0..1	Coding	Industry CDC Census 2010 Binding: Industry CDC Census 2010 (required): Industry CDC Census 2010
coding:industryONETSOCDetailODH	Σ	0..1	Coding	Industry NAICS Detail (ODH) Binding: Industry NAICS Detail (ODH) (required): Industry NAICS Detail (ODH)
coding:industryCDCCensus2018	Σ	0..1	Coding	Industry Code Binding: Industry CDC Census 2018 (required): Industry CDC Census 2018
text	Σ	0..1	string	Industry - Literal
dataAbsentReason	I	0..1	CodeableConcept	The reason that there is no value available for the Industry. Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:odh-UsualOccupationDuration	Σ	0..1	BackboneElement	UsualOccupationDuration: The total of all periods of time (in years) the subject has spent in their Usual Occupation, not including intermittent period(s) when they were not working in that occupation (type of work).
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Usual occupation duration Binding: LOINCCodes (example): Codes identifying names of simple observations. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 74163-7
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
value[x]	Σ	0..1	Quantity	Actual component result
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	Σ	0..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	Σ	0..1	string	Unit representation
system	ΣI	0..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	Σ	0..1	code	Coded form of the unit Fixed Value: a
dataAbsentReason	I	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Observation	I	0..*	UsualWork	Usual Work
Documentation for this format

This structure is derived from UsualWork

Summary

Structures

This structure refers to these other structures:

• Decedent (http://hl7.org/fhir/us/vrdr/StructureDefinition/vrdr-decedent)

Differential View

This structure is derived from UsualWork

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	UsualWork	Usual Work
subject		1..1	Reference(Decedent)	The subject of an observation
valueCodeableConcept		0..1	CodeableConcept	Express the usual occupation using a coded value. If no coded value is available, use text. If the usual occupation is not available, explain using dataAbsentReason.
coding:occupationCDCCensus2018		0..1	Coding	Occupation Code
text		0..1	string	Occupation - Literal
component:odh-UsualIndustry		1..1	BackboneElement	UsualIndustry: The industry (type of business) in which the subject has worked for the longest duration while in the usual occupation. Express the usual industry using a coded value. If no coded value is available, use text. If the usual industry is not available, explain using dataAbsentReason.
valueCodeableConcept		0..1	CodeableConcept	Express the Industry using a coded value. If no coded value is available, use text. If the Industry is not available, explain using dataAbsentReason.
coding:industryCDCCensus2018		0..1	Coding	Industry Code
text		0..1	string	Industry - Literal
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints
Observation	I	0..*	UsualWork	Usual Work
id	Σ	0..1	string	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	Business Identifier for observation
basedOn	Σ	0..*	Reference(ServiceRequest)	The plan, proposal or order that is fulfilled in whole or in part by this observation
partOf	Σ	0..*	Reference(Procedure)	The larger procedure that this particular observation is a component or step
status	?!Σ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
category		0..1	CodeableConcept	Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	1..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code
coding:Fixed_social-history	Σ	1..1	Coding	Social History
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: social-history
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
code	Σ	1..1	CodeableConcept	Type of observation (code / type) Binding: LOINCCodes (example): Codes identifying names of simple observations.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	1..*	Coding	Code defined by a terminology system Slice: Unordered, Open by value:code
coding:Fixed_21843-8	Σ	1..1	Coding	History of Usual Occupation
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
system	Σ	1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version	Σ	0..1	string	Version of the system - if relevant
code	Σ	1..1	code	Symbol in syntax defined by the system Fixed Value: 21843-8
display	Σ	0..1	string	Representation defined by the system
userSelected	Σ	0..1	boolean	If this coding was chosen directly by the user
text	Σ	0..1	string	Plain text representation of the concept
subject	Σ	1..1	Reference(Decedent)	The subject of an observation
focus	Σ	0..*	Reference(RelatedPerson)	What the observation is about, when it is not about the subject of record
encounter	Σ	0..1	Reference(Encounter)	Healthcare event during which this observation is made
Slices for effective[x]	Σ	0..1	Period	Clinically relevant time/time-period for observation Slice: Unordered, Closed by type:$this
effective[x]:effectivePeriod	Σ	0..1	Period	The period.start asserts when the usual occupation began. NOTE: If the period.start element is missing, the start of the usual occupation is not known. The period.end asserts when the usual occupation ended. If usual occupation is current, period.end should be omitted.
issued	Σ	0..1	instant	Date/Time this version was made available
performer	Σ	0..*	Reference(Practitioner | Organization | US Core Patient Profile | RelatedPerson)	Who is responsible for the observation
Slices for value[x]	ΣI	0..1	CodeableConcept	Actual result Slice: Unordered, Closed by type:$this
value[x]:valueCodeableConcept	ΣI	0..1	CodeableConcept	Express the usual occupation using a coded value. If no coded value is available, use text. If the usual occupation is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	0..*	Coding	Code defined by a terminology system Slice: Unordered, Open by pattern:$this
coding:occupationCDCCensus2010	Σ	0..1	Coding	Occupation CDC Census 2010 Binding: Occupation CDC Census 2010 (required): Occupation CDC Census 2010
coding:occupationONETSOCDetailODH	Σ	0..1	Coding	Occupation ONETSOC Detail (ODH) Binding: Occupation ONETSOC Detail (ODH) (required): Occupation ONETSOC Detail (ODH)
coding:occupationCDCCensus2018	Σ	0..1	Coding	Occupation Code Binding: Occupation CDC Census 2018 (required): Occupation CDC Census 2018
text	Σ	0..1	string	Occupation - Literal
dataAbsentReason	I	0..1	CodeableConcept	The reason that there is no value available for the Occupation. Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
note		0..*	Annotation	Comments about the observation
derivedFrom	Σ	0..*	Reference(DocumentReference | Media | QuestionnaireResponse | Observation)	Related measurements the observation is made from
Slices for component	Σ	1..*	BackboneElement	Component results Slice: Unordered, Open by value:code
component:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Type of component observation (code / type) Binding: LOINCCodes (example): Codes identifying names of simple observations.
value[x]	Σ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	I	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
interpretation		0..*	CodeableConcept	High, low, normal, etc. Binding: ObservationInterpretationCodes (extensible): Codes identifying interpretations of observations.
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
component:odh-UsualIndustry	Σ	1..1	BackboneElement	UsualIndustry: The industry (type of business) in which the subject has worked for the longest duration while in the usual occupation. Express the usual industry using a coded value. If no coded value is available, use text. If the usual industry is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	History of Usual industry Binding: LOINCCodes (example): Codes identifying names of simple observations. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 21844-6
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
value[x]	Σ	0..1	CodeableConcept	Express the Industry using a coded value. If no coded value is available, use text. If the Industry is not available, explain using dataAbsentReason.
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
Slices for coding	Σ	0..*	Coding	Code defined by a terminology system Slice: Unordered, Open by pattern:$this
coding:industryCDCCensus2010	Σ	0..1	Coding	Industry CDC Census 2010 Binding: Industry CDC Census 2010 (required): Industry CDC Census 2010
coding:industryONETSOCDetailODH	Σ	0..1	Coding	Industry NAICS Detail (ODH) Binding: Industry NAICS Detail (ODH) (required): Industry NAICS Detail (ODH)
coding:industryCDCCensus2018	Σ	0..1	Coding	Industry Code Binding: Industry CDC Census 2018 (required): Industry CDC Census 2018
text	Σ	0..1	string	Industry - Literal
dataAbsentReason	I	0..1	CodeableConcept	The reason that there is no value available for the Industry. Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
component:odh-UsualOccupationDuration	Σ	0..1	BackboneElement	UsualOccupationDuration: The total of all periods of time (in years) the subject has spent in their Usual Occupation, not including intermittent period(s) when they were not working in that occupation (type of work).
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Usual occupation duration Binding: LOINCCodes (example): Codes identifying names of simple observations. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://loinc.org
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: 74163-7
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
value[x]	Σ	0..1	Quantity	Actual component result
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
value	Σ	0..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	Σ	0..1	string	Unit representation
system	ΣI	0..1	uri	System that defines coded unit form Fixed Value: http://unitsofmeasure.org
code	Σ	0..1	code	Coded form of the unit Fixed Value: a
dataAbsentReason	I	0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
Documentation for this format