US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 8.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions
Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-simple-observation | Version: 8.0.0 | |||
Standards status: Trial-use | Maturity Level: 3 | Computable Name: USCoreSimpleObservationProfile | ||
Other Identifiers: OID:2.16.840.1.113883.4.642.40.2.42.54 | ||||
Copyright/Legal: Used by permission of HL7 International, all rights reserved Creative Commons License |
The US Core Simple Observation Profile inherits from the FHIR Observation resource; refer to it for scope and usage definitions. This US Core FHIR Profile captures any "simple" observations not covered by other US Core Observation profiles. It represents any observation not classified as vital signs, laboratory, imaging, or other specific observation types. This profile sets minimum expectations for the Observation resource to record, search, and retrieve observations such as a clinical observation or assertion about patient health status or other general observations. It specifies which core elements, extensions, vocabularies, and value sets SHALL be present and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.
Example Usage Scenarios:
The following are example usage scenarios for this profile:
The following data elements must always be present (Mandatory definition) or must be supported if the data is present in the sending system (Must Support definition). They are presented below in a simple human-readable explanation. Profile specific guidance and examples are provided as well. The Formal Views below provides the formal summary, definitions, and terminology requirements.
Each Observation Must Have:
Each Observation Must Support:
Additional USCDI Requirements:
This Additional USCDI Requirements element is not Mandatory or Must Support but is required for ONC Health IT certification testing and is included in the formal definition of the profile and the Observation examples.
*see guidance below
Profile Specific Implementation Guidance:
The Observation.category
element provides an efficient way of restricting search on observations to a given context such as sdoh, functional-status, or social history observations. Example searches are shown in the Quick Start section below. However, clients need to understand that data categorization is somewhat subjective. The categorization applied by the source may not align with the client's expectations. Clients may find it more useful to use queries based on a specific code or set of codes or to perform additional client-side filtering of query results.
Observation.derivedFrom
.*As documented here, when using `Observation.derivedFrom' to reference an Observation, the referenced Observation SHOULD be a US Core Observation.
Although none of the Observation.derivedFrom
references are flagged as Must Support, the server SHALL support at least one of them.
Usage:
Description of Profiles, Differentials, Snapshots and how the different presentations work.
This structure is derived from Observation
Name | Flags | Card. | Type | Description & Constraints |
---|---|---|---|---|
Observation | 0..* | Observation | assessment observation | |
status | S | 1..1 | code | registered | preliminary | final | amended + |
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this |
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets |
code | S | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) |
subject | S | 1..1 | Reference(US Core Patient Profile S | Group | Device | US Core Location Profile) | Who and/or what the observation is about |
effective[x] | S | 0..1 | Clinically relevant time/time-period for observation | |
effectiveDateTime | dateTime S | |||
effectivePeriod | Period | |||
effectiveTiming | Timing | |||
effectiveInstant | instant | |||
performer | S | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | Who is responsible for the observation |
value[x] | S | 0..1 | Actual result | |
valueQuantity | Quantity S | |||
valueCodeableConcept | CodeableConcept S | |||
valueString | string S | |||
valueBoolean | boolean S | |||
valueInteger | integer | |||
valueRange | Range | |||
valueRatio | Ratio | |||
valueSampledData | SampledData | |||
valueTime | time | |||
valueDateTime | dateTime | |||
valuePeriod | Period | |||
derivedFrom | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles or other resource the observation is made from | |
Documentation for this format |
Path | Conformance | ValueSet | URI |
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | |
Observation.code | preferred | LOINCCodes (a valid code from LOINC) |
Name | Flags | Card. | Type | Description & Constraints |
---|---|---|---|---|
Observation | C | 0..* | Observation | assessment 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 |
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 | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation. |
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. |
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets |
code | SΣ | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) |
subject | SΣ | 1..1 | Reference(US Core Patient Profile) | Who and/or what the observation is about |
effective[x] | SΣ | 0..1 | Clinically relevant time/time-period for observation | |
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) | Who is responsible for the observation |
value[x] | SΣC | 0..1 | Actual result | |
valueQuantity | Quantity | |||
valueCodeableConcept | CodeableConcept | |||
valueString | string | |||
valueBoolean | boolean | |||
derivedFrom | Σ | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles or other resource the observation is made from |
Documentation for this format |
Path | Conformance | ValueSet | URI |
Observation.status | required | ObservationStatushttp://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard | |
Observation.category | preferred | ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard | |
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | |
Observation.code | preferred | LOINCCodes (a valid code from LOINC)http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard |
Name | Flags | Card. | Type | Description & Constraints | ||||
---|---|---|---|---|---|---|---|---|
Observation | C | 0..* | Observation | assessment 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 | ||||
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.
| |||||
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 | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation. | ||||
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. | ||||
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets | ||||
code | SΣ | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) | ||||
subject | SΣ | 1..1 | Reference(US Core Patient Profile S | Group | Device | US Core Location Profile) | 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] | SΣ | 0..1 | Clinically relevant time/time-period for observation | |||||
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) | Who is responsible for the observation | ||||
value[x] | SΣC | 0..1 | Actual result | |||||
valueQuantity | Quantity S | |||||||
valueCodeableConcept | CodeableConcept S | |||||||
valueString | string S | |||||||
valueBoolean | boolean S | |||||||
valueInteger | integer | |||||||
valueRange | Range | |||||||
valueRatio | Ratio | |||||||
valueSampledData | SampledData | |||||||
valueTime | time | |||||||
valueDateTime | dateTime | |||||||
valuePeriod | Period | |||||||
dataAbsentReason | C | 0..1 | CodeableConcept | 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 | Σ | 0..* | Reference(Observation | QuestionnaireResponse | MolecularSequence) | Related resource that belongs to the Observation group | ||||
derivedFrom | Σ | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles 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 |
Path | Conformance | ValueSet | URI | |||
Observation.language | preferred | CommonLanguages
http://hl7.org/fhir/ValueSet/languages from the FHIR Standard | ||||
Observation.status | required | ObservationStatushttp://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard | ||||
Observation.category | preferred | ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard | ||||
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | ||||
Observation.code | preferred | LOINCCodes (a valid code from LOINC)http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard | ||||
Observation.dataAbsentReason | extensible | DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard | ||||
Observation.interpretation | extensible | ObservationInterpretationCodeshttp://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard | ||||
Observation.bodySite | example | SNOMEDCTBodyStructureshttp://hl7.org/fhir/ValueSet/body-site from the FHIR Standard | ||||
Observation.method | example | ObservationMethodshttp://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard | ||||
Observation.referenceRange.type | preferred | ObservationReferenceRangeMeaningCodeshttp://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard | ||||
Observation.referenceRange.appliesTo | example | ObservationReferenceRangeAppliesToCodeshttp://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 | DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard | ||||
Observation.component.interpretation | extensible | ObservationInterpretationCodeshttp://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard |
This structure is derived from Observation
Summary
Mandatory: 2 elements
Must-Support: 8 elements
Structures
This structure refers to these other structures:
Slices
This structure defines the following Slices:
Maturity: 3
Differential View
This structure is derived from Observation
Name | Flags | Card. | Type | Description & Constraints |
---|---|---|---|---|
Observation | 0..* | Observation | assessment observation | |
status | S | 1..1 | code | registered | preliminary | final | amended + |
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this |
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets |
code | S | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) |
subject | S | 1..1 | Reference(US Core Patient Profile S | Group | Device | US Core Location Profile) | Who and/or what the observation is about |
effective[x] | S | 0..1 | Clinically relevant time/time-period for observation | |
effectiveDateTime | dateTime S | |||
effectivePeriod | Period | |||
effectiveTiming | Timing | |||
effectiveInstant | instant | |||
performer | S | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | Who is responsible for the observation |
value[x] | S | 0..1 | Actual result | |
valueQuantity | Quantity S | |||
valueCodeableConcept | CodeableConcept S | |||
valueString | string S | |||
valueBoolean | boolean S | |||
valueInteger | integer | |||
valueRange | Range | |||
valueRatio | Ratio | |||
valueSampledData | SampledData | |||
valueTime | time | |||
valueDateTime | dateTime | |||
valuePeriod | Period | |||
derivedFrom | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles or other resource the observation is made from | |
Documentation for this format |
Path | Conformance | ValueSet | URI |
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | |
Observation.code | preferred | LOINCCodes (a valid code from LOINC) |
Key Elements View
Name | Flags | Card. | Type | Description & Constraints |
---|---|---|---|---|
Observation | C | 0..* | Observation | assessment 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 |
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 | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation. |
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. |
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets |
code | SΣ | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) |
subject | SΣ | 1..1 | Reference(US Core Patient Profile) | Who and/or what the observation is about |
effective[x] | SΣ | 0..1 | Clinically relevant time/time-period for observation | |
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) | Who is responsible for the observation |
value[x] | SΣC | 0..1 | Actual result | |
valueQuantity | Quantity | |||
valueCodeableConcept | CodeableConcept | |||
valueString | string | |||
valueBoolean | boolean | |||
derivedFrom | Σ | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles or other resource the observation is made from |
Documentation for this format |
Path | Conformance | ValueSet | URI |
Observation.status | required | ObservationStatushttp://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard | |
Observation.category | preferred | ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard | |
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | |
Observation.code | preferred | LOINCCodes (a valid code from LOINC)http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard |
Snapshot View
Name | Flags | Card. | Type | Description & Constraints | ||||
---|---|---|---|---|---|---|---|---|
Observation | C | 0..* | Observation | assessment 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 | ||||
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.
| |||||
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 | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation. | ||||
Slices for category | S | 1..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by pattern:$this Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories. | ||||
category:us-core | S | 0..* | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (required): Note that other codes are permitted, see Required Bindings When Slicing by Value Sets | ||||
code | SΣ | 1..1 | CodeableConcept | Type of observation (code / type) Binding: LOINCCodes (preferred) | ||||
subject | SΣ | 1..1 | Reference(US Core Patient Profile S | Group | Device | US Core Location Profile) | 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] | SΣ | 0..1 | Clinically relevant time/time-period for observation | |||||
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) | Who is responsible for the observation | ||||
value[x] | SΣC | 0..1 | Actual result | |||||
valueQuantity | Quantity S | |||||||
valueCodeableConcept | CodeableConcept S | |||||||
valueString | string S | |||||||
valueBoolean | boolean S | |||||||
valueInteger | integer | |||||||
valueRange | Range | |||||||
valueRatio | Ratio | |||||||
valueSampledData | SampledData | |||||||
valueTime | time | |||||||
valueDateTime | dateTime | |||||||
valuePeriod | Period | |||||||
dataAbsentReason | C | 0..1 | CodeableConcept | 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 | Σ | 0..* | Reference(Observation | QuestionnaireResponse | MolecularSequence) | Related resource that belongs to the Observation group | ||||
derivedFrom | Σ | 0..* | Reference(Observation | US Core DocumentReference Profile | US Core QuestionnaireResponse Profile | ImagingStudy | Media | MolecularSequence) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profiles 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 |
Path | Conformance | ValueSet | URI | |||
Observation.language | preferred | CommonLanguages
http://hl7.org/fhir/ValueSet/languages from the FHIR Standard | ||||
Observation.status | required | ObservationStatushttp://hl7.org/fhir/ValueSet/observation-status|4.0.1 from the FHIR Standard | ||||
Observation.category | preferred | ObservationCategoryCodeshttp://hl7.org/fhir/ValueSet/observation-category from the FHIR Standard | ||||
Observation.category:us-core | required | USCoreSimpleObservationCategoryhttp://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category from this IG | ||||
Observation.code | preferred | LOINCCodes (a valid code from LOINC)http://hl7.org/fhir/ValueSet/observation-codes from the FHIR Standard | ||||
Observation.dataAbsentReason | extensible | DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard | ||||
Observation.interpretation | extensible | ObservationInterpretationCodeshttp://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard | ||||
Observation.bodySite | example | SNOMEDCTBodyStructureshttp://hl7.org/fhir/ValueSet/body-site from the FHIR Standard | ||||
Observation.method | example | ObservationMethodshttp://hl7.org/fhir/ValueSet/observation-methods from the FHIR Standard | ||||
Observation.referenceRange.type | preferred | ObservationReferenceRangeMeaningCodeshttp://hl7.org/fhir/ValueSet/referencerange-meaning from the FHIR Standard | ||||
Observation.referenceRange.appliesTo | example | ObservationReferenceRangeAppliesToCodeshttp://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 | DataAbsentReasonhttp://hl7.org/fhir/ValueSet/data-absent-reason from the FHIR Standard | ||||
Observation.component.interpretation | extensible | ObservationInterpretationCodeshttp://hl7.org/fhir/ValueSet/observation-interpretation from the FHIR Standard |
This structure is derived from Observation
Summary
Mandatory: 2 elements
Must-Support: 8 elements
Structures
This structure refers to these other structures:
Slices
This structure defines the following Slices:
Maturity: 3
Other representations of profile: CSV, Excel, Schematron
Below is an overview of the required Server RESTful FHIR interactions for this profile - for example, search and read operations - when supporting the US Core interactions to access this profile's information (Profile Support + Interaction Support). Note that systems that support only US Core Profiles (Profile Only Support) are not required to support these interactions. See the US Core Server CapabilityStatement for a complete list of supported RESTful interactions for this IG.
Servers providing access to assessment data SHALL support these US Core SMART Scopes:
resource level scopes: <patient|user|system>/Observation.rs
granular scopes: <patient|user|system>.Observation.rs?category=http://hl7.org/fhir/us/core/CodeSystem/us-core-category|sdoh
The following search parameters and search parameter combinations SHALL be supported:
SHALL support searching using the combination of the patient
and category
search parameters:
GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and a category code = laboratory
(how to search by reference and how to search by token)
patient
and code
search parameters:
code
(e.g.code={system|}[code],{system|}[code],...
)GET [base]/Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and observation code(s). SHOULD support search by multiple report codes. The Observation code
parameter searches `Observation.code only. (how to search by reference and how to search by token)
patient
and category
and date
search parameters:
date
comparators: gt,lt,ge,le
date
(e.g.date=[date]&date=[date]]&...
)GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and date and a category code = laboratory
(how to search by reference and how to search by token and how to search by date)
The following search parameter combinations SHOULD be supported:
patient
and category
and status
search parameters:
status
(e.g.status={system|}[code],{system|}[code],...
)GET [base]/Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory&status={system|}[code]{,{system|}[code],...}
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and category = laboratory
and status (how to search by reference and how to search by token)
patient
and category
and _lastUpdated
search parameters:
_lastUpdated
comparators: gt,lt,ge,le
_lastUpdated
(e.g._lastUpdated=[date]&_lastUpdated=[date]]&...
)GET [base]/Observation?patient={Type/}[id]&category={system|}[code]&_lastUpdated={gt|lt|ge|le}[date]{&_lastUpdated={gt|lt|ge|le}[date]&...}
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and category and _lastUpdated. See the US Core General Guidance page for Searching Using lastUpdated. (how to search by reference and how to search by token and how to search by date)
patient
and code
and date
search parameters:
code
(e.g.code={system|}[code],{system|}[code],...
)date
comparators: gt,lt,ge,le
date
(e.g.date=[date]&date=[date]]&...
)GET [base]/Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}
Example:
Implementation Notes: Fetches a bundle of all Observation resources for the specified patient and date and report code(s). SHOULD support search by multiple report codes. (how to search by reference and how to search by token and how to search by date)