At-Home In-Vitro Test Report, published by HL7 International / Orders and Observations. This guide is not an authorized publication; it is the continuous build for version 1.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/home-lab-report/ and changes regularly. See the Directory of published versions

• Content
• Detailed Descriptions
• Mappings
• Examples
• XML
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Resource Profile: Observation - Patient Question Answer

This profile constrains the FHIR Observation Resource to represent an answer given to a question asked of the patient by the app when recording or uploading their test results.

Usage:

• Refer to this Resource Profile: Extension - At-Home In-Vitro Test Supporting Info
• Examples for this Resource Profile: Observation/observation-patient-answer-congregate-s-trevor, Observation/observation-patient-answer-employed-healthcare-s-trevor, Observation/observation-patient-answer-first-test-s-trevor, Observation/observation-patient-answer-hospitalized-s-trevor... Show 4 more, Observation/observation-patient-answer-pregnancy-s-trevor, Observation/observation-patient-answer-symptom-onset-covid-p-noelle, Observation/observation-patient-answer-symptoms-present-covid-p-noelle and Observation/observation-patient-answer-symptoms-present-covid-s-trevor

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

• Differential Table
• Key Elements Table
• Snapshot Table
• Statistics/References
• All

This structure is derived from USCoreObservationScreeningAssessmentProfile

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation
code		1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
value[x]		1..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period	Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet	URI
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present us-core-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present us-core-3: SHALL use UCUM for coded quantity units.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SΣ	1..1	code	(USCDI) registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category	S	1..*	CodeableConcept	(USCDI) Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:survey	S	1..1	CodeableConcept	(USCDI) Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
code		1..1	code	Symbol in syntax defined by the system Fixed Value: survey
category:screening-assessment	S	0..*	CodeableConcept	(USCDI) Classification of type of observation Binding: US Core Screening Assessment Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets
code	SΣ	1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) Who and/or what the observation is about
effective[x]	SΣC	0..1		(USCDI) Clinically relevant time/time-period for observation us-core-1: Datetime must be at least to day.
effectiveDateTime			dateTime
performer	SΣ	0..*	Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile)	(USCDI) Who is responsible for the observation
value[x]	SΣC	1..1		Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
dataAbsentReason	SC	0..1	CodeableConcept	(USCDI) Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
hasMember	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile)	(USCDI) Reference to panel members or multi-select responses or multi-select responses
derivedFrom	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile | US Core QuestionnaireResponse Profile)	(USCDI) Related Observation(s) or other resource the observation is made from
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.status	required	ObservationStatus http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:survey	preferred	Pattern: survey http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:screening-assessment	required	USCoreScreeningAssessmentObservationCategory http://hl7.org/fhir/us/core/ValueSet/us-core-screening-assessment-observation-category
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present us-core-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present us-core-3: SHALL use UCUM for coded quantity units.
id	Σ	0..1	id	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(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)	Fulfills plan, proposal or order
partOf	Σ	0..*	Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	(USCDI) registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category	S	1..*	CodeableConcept	(USCDI) Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:survey	S	1..1	CodeableConcept	(USCDI) Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. 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://terminology.hl7.org/CodeSystem/observation-category
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: survey
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
category:screening-assessment	S	0..*	CodeableConcept	(USCDI) Classification of type of observation Binding: US Core Screening Assessment Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets
code	SΣ	1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) Who and/or what the observation is about
focus	Σ	0..*	Reference(Resource)	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
effective[x]	SΣC	0..1		(USCDI) Clinically relevant time/time-period for observation us-core-1: Datetime must be at least to day.
effectiveDateTime			dateTime S
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	Σ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile)	(USCDI) Who is responsible for the observation
value[x]	SΣC	1..1		Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
valueQuantity			Quantity S
valueCodeableConcept			CodeableConcept S
valueString			string S
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	(USCDI) Why the 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.
note		0..*	Annotation	Comments about the observation
bodySite		0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (example): Codes describing anatomical locations. May include laterality.
method		0..1	CodeableConcept	How it was done Binding: ObservationMethods (example): Methods for simple observations.
specimen		0..1	Reference(Specimen)	Specimen used for this observation
device		0..1	Reference(Device | DeviceMetric)	(Measurement) Device
referenceRange	C	0..*	BackboneElement	Provides guide for interpretation obs-3: Must have at least a low or a high or text
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
low	C	0..1	SimpleQuantity	Low Range, if relevant
high	C	0..1	SimpleQuantity	High Range, if relevant
type		0..1	CodeableConcept	Reference range qualifier Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age		0..1	Range	Applicable age range, if relevant
text		0..1	string	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile S | QuestionnaireResponse | MolecularSequence)	(USCDI) Reference to panel members or multi-select responses or multi-select responses
derivedFrom	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile S | US Core QuestionnaireResponse Profile S | US Core DocumentReference Profile | ImagingStudy | Media | MolecularSequence)	(USCDI) Related Observation(s) or other resource the observation is made from
component	Σ	0..*	BackboneElement	Component results
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	C	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
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Observation.status	required	ObservationStatus http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:survey	preferred	Pattern: survey http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:screening-assessment	required	USCoreScreeningAssessmentObservationCategory http://hl7.org/fhir/us/core/ValueSet/us-core-screening-assessment-observation-category
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.bodySite	example	SNOMEDCTBodyStructures http://hl7.org/fhir/ValueSet/body-site from the FHIR Standard
Observation.method	example	ObservationMethods http://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard
Observation.referenceRange.type	preferred	ObservationReferenceRangeMeaningCodes http://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard
Observation.referenceRange.appliesTo	example	ObservationReferenceRangeAppliesToCodes http://hl7.org/fhir/ValueSet/referencerange-appliesto from the FHIR Standard
Observation.component.code	example	LOINCCodes (a valid code from LOINC) http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard

This structure is derived from USCoreObservationScreeningAssessmentProfile

Summary

Mandatory: 1 element

Differential View

This structure is derived from USCoreObservationScreeningAssessmentProfile

Name	Flags	Card.	Type	Description & Constraints
Observation		0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation
code		1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
value[x]		1..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period	Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet	URI
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov

Key Elements View

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present us-core-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present us-core-3: SHALL use UCUM for coded quantity units.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
status	?!SΣ	1..1	code	(USCDI) registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category	S	1..*	CodeableConcept	(USCDI) Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:survey	S	1..1	CodeableConcept	(USCDI) Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
code		1..1	code	Symbol in syntax defined by the system Fixed Value: survey
category:screening-assessment	S	0..*	CodeableConcept	(USCDI) Classification of type of observation Binding: US Core Screening Assessment Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets
code	SΣ	1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) Who and/or what the observation is about
effective[x]	SΣC	0..1		(USCDI) Clinically relevant time/time-period for observation us-core-1: Datetime must be at least to day.
effectiveDateTime			dateTime
performer	SΣ	0..*	Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile)	(USCDI) Who is responsible for the observation
value[x]	SΣC	1..1		Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
dataAbsentReason	SC	0..1	CodeableConcept	(USCDI) Why the result is missing Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.
hasMember	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile)	(USCDI) Reference to panel members or multi-select responses or multi-select responses
derivedFrom	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile | US Core QuestionnaireResponse Profile)	(USCDI) Related Observation(s) or other resource the observation is made from
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.status	required	ObservationStatus http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:survey	preferred	Pattern: survey http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:screening-assessment	required	USCoreScreeningAssessmentObservationCategory http://hl7.org/fhir/us/core/ValueSet/us-core-screening-assessment-observation-category
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard

Snapshot View

Name	Flags	Card.	Type	Description & Constraints
Observation	C	0..*	USCoreObservationScreeningAssessmentProfile	Survey Observation obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present us-core-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present us-core-3: SHALL use UCUM for coded quantity units.
id	Σ	0..1	id	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(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)	Fulfills plan, proposal or order
partOf	Σ	0..*	Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	(USCDI) registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category	S	1..*	CodeableConcept	(USCDI) Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.
category:survey	S	1..1	CodeableConcept	(USCDI) Classification of type of observation Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. 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://terminology.hl7.org/CodeSystem/observation-category
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: survey
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
category:screening-assessment	S	0..*	CodeableConcept	(USCDI) Classification of type of observation Binding: US Core Screening Assessment Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets
code	SΣ	1..1	CodeableConcept	Questions asked of the patient by the app when recording or uploading their at-home in-vitro test results. V2: OBX-3.1, OBX-3.2, OBX-3.3, OBX-3.7 Binding: At Home In Vitro Patient Questions (extensible): Clinical Focus: This set of values contains concepts representing questions asked of the patient by the app when recording or uploading their at-home in-vitro test results.
subject	SΣ	1..1	Reference(US Core Patient Profile)	(USCDI) Who and/or what the observation is about
focus	Σ	0..*	Reference(Resource)	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
effective[x]	SΣC	0..1		(USCDI) Clinically relevant time/time-period for observation us-core-1: Datetime must be at least to day.
effectiveDateTime			dateTime S
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	Σ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile)	(USCDI) Who is responsible for the observation
value[x]	SΣC	1..1		Answer given to a question asked of the patient by the app when recording or uploading their test results. V2: OBX-5
valueQuantity			Quantity S
valueCodeableConcept			CodeableConcept S
valueString			string S
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
dataAbsentReason	SC	0..1	CodeableConcept	(USCDI) Why the 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.
note		0..*	Annotation	Comments about the observation
bodySite		0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (example): Codes describing anatomical locations. May include laterality.
method		0..1	CodeableConcept	How it was done Binding: ObservationMethods (example): Methods for simple observations.
specimen		0..1	Reference(Specimen)	Specimen used for this observation
device		0..1	Reference(Device | DeviceMetric)	(Measurement) Device
referenceRange	C	0..*	BackboneElement	Provides guide for interpretation obs-3: Must have at least a low or a high or text
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
low	C	0..1	SimpleQuantity	Low Range, if relevant
high	C	0..1	SimpleQuantity	High Range, if relevant
type		0..1	CodeableConcept	Reference range qualifier Binding: ObservationReferenceRangeMeaningCodes (preferred): Code for the meaning of a reference range.
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age		0..1	Range	Applicable age range, if relevant
text		0..1	string	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile S | QuestionnaireResponse | MolecularSequence)	(USCDI) Reference to panel members or multi-select responses or multi-select responses
derivedFrom	SΣ	0..*	Reference(US Core Observation Screening Assessment Profile S | US Core QuestionnaireResponse Profile S | US Core DocumentReference Profile | ImagingStudy | Media | MolecularSequence)	(USCDI) Related Observation(s) or other resource the observation is made from
component	Σ	0..*	BackboneElement	Component results
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	C	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
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Observation.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Observation.status	required	ObservationStatus http://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard
Observation.category	preferred	ObservationCategoryCodes http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:survey	preferred	Pattern: survey http://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard
Observation.category:screening-assessment	required	USCoreScreeningAssessmentObservationCategory http://hl7.org/fhir/us/core/ValueSet/us-core-screening-assessment-observation-category
Observation.code	extensible	AtHomeInVitroPatientQuestions http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1099.55 from https://vsac.nlm.nih.gov
Observation.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard
Observation.bodySite	example	SNOMEDCTBodyStructures http://hl7.org/fhir/ValueSet/body-site from the FHIR Standard
Observation.method	example	ObservationMethods http://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard
Observation.referenceRange.type	preferred	ObservationReferenceRangeMeaningCodes http://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard
Observation.referenceRange.appliesTo	example	ObservationReferenceRangeAppliesToCodes http://hl7.org/fhir/ValueSet/referencerange-appliesto from the FHIR Standard
Observation.component.code	example	LOINCCodes (a valid code from LOINC) http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard
Observation.component.dataAbsentReason	extensible	DataAbsentReason http://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard
Observation.component.interpretation	extensible	ObservationInterpretationCodes http://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard

This structure is derived from USCoreObservationScreeningAssessmentProfile

Summary

Mandatory: 1 element

Other representations of profile: CSV, Excel, Schematron