## Union of http://hl7.org/fhir/us/home-lab-report/StructureDefinition/Observation-at-home-in-vitro-test-result-covid and http://hl7.org/fhir/us/home-lab-report/StructureDefinition/Observation-at-home-in-vitro-test-result-covid

This is the set of resources that conform to either of the profiles Observation - At-Home In-Vitro Test Result - COVID-19 (http://hl7.org/fhir/us/home-lab-report/StructureDefinition/Observation-at-home-in-vitro-test-result-covid) and Observation - At-Home In-Vitro Test Result - COVID-19 (http://hl7.org/fhir/us/home-lab-report/StructureDefinition/Observation-at-home-in-vitro-test-result-covid). E.g. what you have to deal with if you get resources conforming to one of them

### Structure

Name | Flags | Card. | Type | Description & Constraints
--- | --- | --- | --- | ---
Observation | C | 0..* |  | Measurements and simple assertions dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated dom-5: If a resource is contained in another resource, it SHALL NOT have a security label dom-6: A resource should have narrative for robust management 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
meta | Σ | 0..1 | Meta | Metadata about the resource ele-1: All FHIR elements must have a @value or children
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created ele-1: All FHIR elements must have a @value or children
language |  | 0..1 | code | Language of the resource content Binding: ?? (preferred): A human language. ele-1: All FHIR elements must have a @value or children
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation ele-1: All FHIR elements must have a @value or children
contained |  | 0..* | Resource | Contained, inline Resources
Extension-at-home-in-vitro-test-proctored-info |  | 0..1 | (Complex) | Extension - At-Home In-Vitro Test Proctored Information URL: http://hl7.org/fhir/us/home-lab-report/StructureDefinition/Extension-at-home-in-vitro-test-proctored-info ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
identifier | Σ | 0..* | Identifier | Business Identifier for observation ele-1: All FHIR elements must have a @value or children
basedOn | Σ | 0..* | Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest) | Fulfills plan, proposal or order ele-1: All FHIR elements must have a @value or children
partOf | Σ | 0..* | Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy) | Part of referenced event ele-1: All FHIR elements must have a @value or children
status | ?!S Σ | 1..1 | code | left: registered | preliminary | final | amended +; right: At-Home Test result status final. V2: OBR-25, OBX-11 Binding: ?? (required): Codes providing the status of an observation. ele-1: All FHIR elements must have a @value or children
category | S | 1..* | CodeableConcept | left: Classification of type of observation; right: (USCDI) Classification of type of observation Binding: ?? (preferred): Codes for high level observation categories. ele-1: All FHIR elements must have a @value or children
code | S Σ | 1..1 | CodeableConcept | left: Consult LIVD: https://www.cdc.gov/csels/dls/livd-codes.html to obtain the values to be used for each particular use case.; right: Consult LIVD: https://www.cdc.gov/csels/dls/livd-codes.html to obtain the values to be used for the COVID-19 use case. Binding: ?? (extensible): left: LOINC codes; right: Laboratory LOINC Codes ele-1: All FHIR elements must have a @value or children
subject | S Σ | 1..1 | Reference(Patient - At Home In Vitro Test | #sd-Patient-at-home-in-vitro-test-Patient-at-home-in-vitro-test) | left: Who and/or what the observation is about; right: (USCDI) Who and/or what the observation is about ele-1: All FHIR elements must have a @value or children
focus | Σ | 0..* | Reference(Resource) | What the observation is about, when it is not about the subject of record ele-1: All FHIR elements must have a @value or children
encounter | Σ | 0..1 | Reference(Encounter) | Healthcare event during which this observation is made ele-1: All FHIR elements must have a @value or children
effective[x] | S Σ C | 1..1 | dateTime | left: Clinically relevant time/time-period for observation; right: At-Home Test date of interpretation/result date. The effectiveTime SHALL be precise to at least the minute and SHALL include a time zone offset. NOTE: For multiplex tests, this field must match across all results. V2: OBX-7.1, OBX-19 ele-1: All FHIR elements must have a @value or children us-core-1: Datetime must be at least to day.
issued | S Σ | 0..1 | instant | left: Test result date released; right: At-Home Test result date released - when test item is done (in the at-home setting will mostly be the same as the Observation.effective[x], could be different when a proctor is involved - when the proctor releases the result). V2: OBR-22.1 ele-1: All FHIR elements must have a @value or children
performer | S Σ | 0..* | Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson) | If the performer is not the patient being tested, specify the person performing the test. ele-1: All FHIR elements must have a @value or children
value[x] | S Σ C | 1..1 | CodeableConcept | left: Consult LIVD: https://www.cdc.gov/csels/dls/livd-codes.html to obtain the values to be used for each particular use case.; right: Consult LIVD: https://www.cdc.gov/csels/dls/livd-codes.html to obtain the values to be used for the COVID-19 use case. ele-1: All FHIR elements must have a @value or children us-core-4: SHOULD use Snomed CT for coded Results us-core-3: SHALL use UCUM for coded quantity units.
dataAbsentReason | S | 0..1 | CodeableConcept | left: Why the result is missing; right: (USCDI) Why the result is missing Binding: ?? (extensible): Codes specifying why the result (Observation.value[x]) is missing. ele-1: All FHIR elements must have a @value or children
interpretation |  | 0..* | CodeableConcept | High, low, normal, etc. Binding: ?? (extensible): Codes identifying interpretations of observations. ele-1: All FHIR elements must have a @value or children
note |  | 0..* | Annotation | Comments about the observation ele-1: All FHIR elements must have a @value or children
bodySite |  | 0..1 | CodeableConcept | Observed body part Binding: ?? (example): Codes describing anatomical locations. May include laterality. ele-1: All FHIR elements must have a @value or children
method |  | 0..1 | CodeableConcept | How it was done Binding: ?? (example): Methods for simple observations. ele-1: All FHIR elements must have a @value or children
specimen | S | 1..1 | Reference(Specimen - At-Home In-Vitro Test - COVID-19 | #sd-Specimen-at-home-in-vitro-test-covid-Specimen-at-home-in-vitro-test-covid) | left: The Specimen SHALL be from at-home Covid sample.; right: The Specimen SHALL be from at-home COVID-19 sample. ele-1: All FHIR elements must have a @value or children
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
reference | Σ C | 0..1 | string | Literal reference, Relative, internal or absolute URL ele-1: All FHIR elements must have a @value or children
type | Σ | 0..1 | uri | Type the reference refers to (e.g. "Patient") Binding: ?? (extensible): Aa resource (or, for logical models, the URI of the logical model). ele-1: All FHIR elements must have a @value or children
identifier | Σ | 0..1 | Identifier | Logical reference, when literal reference is not known ele-1: All FHIR elements must have a @value or children
display | Σ | 0..1 | string | Text alternative for the resource ele-1: All FHIR elements must have a @value or children
device | S | 1..1 | Reference(Device - At-Home In-Vitro Test | #sd-Device-at-home-in-vitro-test-Device-at-home-in-vitro-test) | left: The referenced device SHALL be an home Covid test device.; right: The referenced device is an at-home COVID-19 test device. ele-1: All FHIR elements must have a @value or children
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
reference | Σ C | 0..1 | string | Literal reference, Relative, internal or absolute URL ele-1: All FHIR elements must have a @value or children
type | Σ | 0..1 | uri | Type the reference refers to (e.g. "Patient") Binding: ?? (extensible): Aa resource (or, for logical models, the URI of the logical model). ele-1: All FHIR elements must have a @value or children
identifier | Σ | 0..1 | Identifier | Logical reference, when literal reference is not known ele-1: All FHIR elements must have a @value or children
display | Σ | 0..1 | string | Text alternative for the resource ele-1: All FHIR elements must have a @value or children
referenceRange | C | 0..* | BackboneElement | Provides guide for interpretation ele-1: All FHIR elements must have a @value or children obs-3: Must have at least a low or a high or text
extension |  | 0..* | Extension | Additional content defined by implementations ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
low |  | 0..1 | ?? | Low Range, if relevant ele-1: All FHIR elements must have a @value or children
high |  | 0..1 | ?? | High Range, if relevant ele-1: All FHIR elements must have a @value or children
type |  | 0..1 | CodeableConcept | Reference range qualifier Binding: ?? (preferred): Code for the meaning of a reference range. ele-1: All FHIR elements must have a @value or children
appliesTo |  | 0..* | CodeableConcept | Reference range population Binding: ?? (example): Codes identifying the population the reference range applies to. ele-1: All FHIR elements must have a @value or children
age |  | 0..1 | Range | Applicable age range, if relevant ele-1: All FHIR elements must have a @value or children
text |  | 0..1 | string | Text based reference range in an observation ele-1: All FHIR elements must have a @value or children
hasMember | Σ | 0..* | Reference(Observation - At-Home In-Vitro Test Result | #sd-Observation-at-home-in-vitro-test-result-Observation-at-home-in-vitro-test-result) | Multiplex Assay tests that serve as a single test to diagnose infection caused by multiple viruses (e.g. CDC Flu SC2 Multiplex Assay for SARS-CoV-2, influenza A, and/or influenza B viruses) should be recorded using multiple Observation.hasMember elements. ele-1: All FHIR elements must have a @value or children
derivedFrom | Σ | 0..* | Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence) | Related measurements the observation is made from ele-1: All FHIR elements must have a @value or children
component | Σ | 0..* | BackboneElement | Component results ele-1: All FHIR elements must have a @value or children
extension |  | 0..* | Extension | Additional content defined by implementations ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both
code | Σ | 1..1 | CodeableConcept | Type of component observation (code / type) Binding: ?? (example): Codes identifying names of simple observations. ele-1: All FHIR elements must have a @value or children
value[x] | Σ | 0..1 |  | Actual component result ele-1: All FHIR elements must have a @value or children
valueQuantity |  |  | Quantity |
valueCodeableConcept |  |  | CodeableConcept |
valueString |  |  | string |
valueBoolean |  |  | boolean |
valueInteger |  |  | integer |
valueRange |  |  | Range |
valueRatio |  |  | Ratio |
valueSampledData |  |  | SampledData |
valueTime |  |  | time |
valueDateTime |  |  | dateTime |
valuePeriod |  |  | Period |
dataAbsentReason |  | 0..1 | CodeableConcept | Why the component result is missing Binding: ?? (extensible): Codes specifying why the result (Observation.value[x]) is missing. ele-1: All FHIR elements must have a @value or children
interpretation |  | 0..* | CodeableConcept | High, low, normal, etc. Binding: ?? (extensible): Codes identifying interpretations of observations. ele-1: All FHIR elements must have a @value or children
referenceRange |  | 0..* |  | Provides guide for interpretation of component result ele-1: All FHIR elements must have a @value or children
Documentation for this format