Health eData 1 Sandbox
0.1.0 - CI Build

Health eData 1 Sandbox, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/argonautproject/USCDIV7/ and changes regularly. See the Directory of published versions

## Resource Profile: US Core Observation Patient Accommodation Profile

Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-accommodation | Version: 0.1.0
Active as of 2026-05-13 | Maturity Level: 3 | Computable Name: USCoreObservationAccommodationProfile
Other Identifiers: OID:2.16.840.1.113883.4.642.40.2.42.73
Copyright/Legal: Used by permission of HL7 International, all rights reserved Creative Commons License

The US Core Observation Patient Accommodation Profile inherits from the FHIR Observation resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI) Accommodation Data Element of the Patient Demographics/Information Data Class. It sets minimum expectations for the Observation resource to record, search, and fetch information about modifications, tools, technologies, and other supports necessary to enable a patient to access care. Examples include, but are not limited to, sign language interpreters, wheelchair accessibility requirements, and sensory accommodation. It specifies which core elements, extensions, vocabularies, and value sets SHALL be present in the resource 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 the US Core Observation profile:

- Query for Observation resources belonging to a Patient
- [Record or update] a Patient Observation

### Mandatory and Must Support Data Elements

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:

1. a status
2. patient accommodation code
3. a patient

Each Observation Must Support:

1. classification of type of observation
2. clinically relevant time or time period for the observation
3. coded or free text patient accommodation

Additional USCDI Requirements:

These [Additional USCDI Requirements] elements are not Mandatory or Must Support but are required for ONC Health IT certification testing and are included in the formal definition of the profile and the Observation examples.

1. 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: who is responsible for the observation

### Profile Specific Implementation Guidance

This section provides detailed implementation guidance for the US Core Profile to support implementation and certification.

### Liquid Script to Generate StructureDefinition All Nice N Pretty Like

{% include structure-table.md sd=sd source="differential" show_must_support=true show_uscdi=true %}

## USCoreObservationAccommodationProfile — US Core Observation Patient Accommodation Profile

The US Core Observation Patient Accommodation Profile inherits from the FHIR Observation resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI) Accommodation Data Element of the Patient Demographics/Information Data Class. It sets minimum expectations for the Observation resource to record, search, and fetch information about modifications, tools, technologies, and other supports necessary to enable a patient to access care. Examples include, but are not limited to, sign language interpreters, wheelchair accessibility requirements, and sensory accommodation. It specifies which core elements, extensions, vocabularies, and value sets SHALL be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.

- URL: `http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-accommodation`
- Version: 0.1.0
- Status: active
- Kind: resource
- Type: `Observation`
- Base Definition: `http://hl7.org/fhir/StructureDefinition/Observation`
- Derivation: constraint

### Elements (differential)

Element | Must Support | Add'l USCDI | Cardinality | Type | Description
--- | --- | --- | --- | --- | ---
`Observation` |  |  | 0..* |  | US Core Observation Patient Accommodation Profile Measurements and simple assertions made about a patient, device or other subject.
↳ `status` | ✅ |  | 1..1 | `code` | registered | preliminary | final | amended + The status of the result value. Binding: `http://hl7.org/fhir/ValueSet/observation-status\|4.0.1` (required) — Codes providing the status of an observation.
↳ `category` | ✅ |  | 0..* | `CodeableConcept` | Classification of type of observation A code that classifies the general type of observation being made. Binding: `http://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category` (preferred) — FHIR and US Core codes for high level observation categories. Slicing: discriminator `value@$this` — rules: open
↳ `category` slice: `us-core` | ✅ |  | 0..1 | `CodeableConcept` | Classification of type of observation A code that classifies the general type of observation being made. Binding: `http://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category` (preferred) — FHIR and US Core codes for high level observation categories. Pattern (CodeableConcept): `http://hl7.org/fhir/us/core/CodeSystem/us-core-category#accommodation`
↳ `code` | ✅ |  | 1..1 | `CodeableConcept` | Patient accommodation code Describes what was observed. Sometimes this is called the observation "name". Binding: `http://hl7.org/fhir/ValueSet/observation-codes\|4.0.1` (example) — Codes identifying names of simple observations. Pattern (CodeableConcept): `http://hl7.org/fhir/us/core/CodeSystem/us-core-category#accommodation`
↳ `subject` | ✅ |  | 1..1 | `Reference` target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient | Who and/or what the observation is about The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation.
↳ `effective[x]` | ✅ |  | 0..1 | `dateTime` `Period` `Timing` `instant` | Clinically relevant time/time-period for observation The time or time-period the observed value is asserted as being true.
↳ `performer` |  | ✅ | 0..* | `Reference` target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient target: http://hl7.org/fhir/StructureDefinition/PractitionerRole target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-careteam target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson | Who is responsible for the observation Who was responsible for asserting the observed value as "true".
↳ `value[x]` | ✅ |  | 0..1 | `string` `CodeableConcept` | Actual result The information determined as a result of making the observation, if the information has a simple value.

    ## USCoreObservationAccommodationProfile — US Core Observation Patient Accommodation Profile

    The US Core Observation Patient Accommodation Profile inherits from the FHIR [Observation](https://hl7.org/fhir/R4/observation.html) resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI) *Accommodation Data Element of the Patient Demographics/Information Data Class*. It sets minimum expectations for the Observation resource to record, search, and fetch information about modifications, tools, technologies, and other supports necessary to enable a patient to access care. Examples include, but are not limited to, sign language interpreters, wheelchair accessibility requirements, and sensory accommodation. It specifies which core elements, extensions, vocabularies, and value sets **SHALL** be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.

    - **URL:** `http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-accommodation`
    - **Version:** 0.1.0
    - **Status:** active
    - **Kind:** resource
    - **Type:** `Observation`
    - **Base Definition:** `http://hl7.org/fhir/StructureDefinition/Observation`
    - **Derivation:** constraint

    ### Elements (differential)

    | Element | Must Support | Add'l USCDI | Cardinality | Type | Description |
    |---|:---:|:---:|---|---|---|
    | `Observation` |  |  | 0..* |  | **US Core Observation Patient Accommodation Profile**<br/>Measurements and simple assertions made about a patient, device or other subject. |
    | <span style="padding-left: 1.5em;">↳</span> `status` | ✅ |  | 1..1 | `code` | **registered \| preliminary \| final \| amended +**<br/>The status of the result value.<br/><span style="font-size: 0.85em;">**Binding:** `http://hl7.org/fhir/ValueSet/observation-status\|4.0.1` (required) — Codes providing the status of an observation.</span> |
    | <span style="padding-left: 1.5em;">↳</span> `category` | ✅ |  | 0..* | `CodeableConcept` | **Classification of  type of observation**<br/>A code that classifies the general type of observation being made.<br/><span style="font-size: 0.85em;">**Binding:** `http://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category` (preferred) — FHIR and US Core codes for high level observation categories.</span><br/><span style="font-size: 0.85em;">**Slicing:** discriminator `value@$this` — rules: open</span> |
    | <span style="padding-left: 1.5em;">↳</span> `category`<br/><span style="font-size: 0.85em;">slice: `us-core`</span> | ✅ |  | 0..1 | `CodeableConcept` | **Classification of  type of observation**<br/>A code that classifies the general type of observation being made.<br/><span style="font-size: 0.85em;">**Binding:** `http://hl7.org/fhir/us/core/ValueSet/us-core-simple-observation-category` (preferred) — FHIR and US Core codes for high level observation categories.</span><br/><span style="font-size: 0.85em;">**Pattern (CodeableConcept):** `http://hl7.org/fhir/us/core/CodeSystem/us-core-category#accommodation`</span> |
    | <span style="padding-left: 1.5em;">↳</span> `code` | ✅ |  | 1..1 | `CodeableConcept` | **Patient accommodation code**<br/>Describes what was observed. Sometimes this is called the observation "name".<br/><span style="font-size: 0.85em;">**Binding:** `http://hl7.org/fhir/ValueSet/observation-codes\|4.0.1` (example) — Codes identifying names of simple observations.</span><br/><span style="font-size: 0.85em;">**Pattern (CodeableConcept):** `http://hl7.org/fhir/us/core/CodeSystem/us-core-category#accommodation`</span> |
    | <span style="padding-left: 1.5em;">↳</span> `subject` | ✅ |  | 1..1 | `Reference`<br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient</span> | **Who and/or what the observation is about**<br/>The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation. |
    | <span style="padding-left: 1.5em;">↳</span> `effective[x]` | ✅ |  | 0..1 | `dateTime`<br/>`Period`<br/>`Timing`<br/>`instant` | **Clinically relevant time/time-period for observation**<br/>The time or time-period the observed value is asserted as being true. |
    | <span style="padding-left: 1.5em;">↳</span> `performer` |  | ✅ | 0..* | `Reference`<br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner</span><br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization</span><br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient</span><br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/StructureDefinition/PractitionerRole</span><br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-careteam</span><br/><span style="font-size: 0.85em;">target: http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson</span> | **Who is responsible for the observation**<br/>Who was responsible for asserting the observed value as "true". |
    | <span style="padding-left: 1.5em;">↳</span> `value[x]` | ✅ |  | 0..1 | `string`<br/>`CodeableConcept` | **Actual result**<br/>The information determined as a result of making the observation, if the information has a simple value. |

Usages:

- Examples for this Profile: Observation/accommodation-asl, Observation/accommodation-service-animal and Observation/accommodation-wheelchair

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

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

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

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation | C | 0..* | Observation | US Core Observation Patient Accommodation Profile Constraints: obs-6, obs-7
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
status | ?!S Σ | 1..1 | code | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
code | S Σ | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
subject | S Σ | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | Who and/or what the observation is about
effective[x] | S Σ | 0..1 |  | Clinically relevant time/time-period for observation
effectiveDateTime |  |  | dateTime S |
effectivePeriod |  |  | Period |
effectiveTiming |  |  | Timing |
effectiveInstant |  |  | instant |
performer | Σ | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S Σ C | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Observation.status | Base | required | ObservationStatus | 📍4.0.1 | FHIR Std.
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Observation | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Observation | 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 | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Observation | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
obs-6 | error | Observation | dataAbsentReason SHALL only be present if Observation.value[x] is not present | `dataAbsentReason.empty() or value.empty()`
obs-7 | error | Observation | If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present | `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()`

This structure is derived from Observation

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation |  | 0..* | Observation | US Core Observation Patient Accommodation Profile
status | S | 1..1 | code | registered | preliminary | final | amended +
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
code | S | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
subject | S | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | 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 |  | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation | C | 0..* | Observation | US Core Observation Patient Accommodation Profile Constraints: obs-6, obs-7
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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 | ?!S Σ | 1..1 | code | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
code | S Σ | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
subject | S Σ | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | 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] | S Σ | 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 | Σ | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S Σ C | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
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 Constraints: obs-3
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(4.0.1) | Low Range, if relevant
high | C | 0..1 | SimpleQuantity(4.0.1) | 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(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence) | Related measurements 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 | Status | Usage | ValueSet | Version | Source
Observation.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
Observation.status | Base | required | ObservationStatus | 📍4.0.1 | FHIR Std.
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.
Observation.dataAbsentReason | Base | extensible | DataAbsentReason | 📍4.0.1 | FHIR Std.
Observation.interpretation | Base | extensible | Observation Interpretation Codes | 📍4.0.1 | FHIR Std.
Observation.bodySite | Base | example | SNOMED CT Body Structures | 📍4.0.1 | FHIR Std.
Observation.method | Base | example | Observation Methods | 📍4.0.1 | FHIR Std.
Observation.referenceRange.​type | Base | preferred | Observation Reference Range Meaning Codes | 📍4.0.1 | FHIR Std.
Observation.referenceRange.​appliesTo | Base | example | Observation Reference Range Applies To Codes | 📍4.0.1 | FHIR Std.
Observation.component.​code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.
Observation.component.​dataAbsentReason | Base | extensible | DataAbsentReason | 📍4.0.1 | FHIR Std.
Observation.component.​interpretation | Base | extensible | Observation Interpretation Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Observation | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Observation | 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 | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Observation | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
obs-3 | error | Observation.referenceRange | Must have at least a low or a high or text | `low.exists() or high.exists() or text.exists()`
obs-6 | error | Observation | dataAbsentReason SHALL only be present if Observation.value[x] is not present | `dataAbsentReason.empty() or value.empty()`
obs-7 | error | Observation | If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present | `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()`

This structure is derived from Observation

Summary

Mandatory: 1 element
Must-Support: 7 elements

Structures

This structure refers to these other structures:

- US Core Patient Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient)
- US Core Practitioner Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner)
- US Core Organization Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization)
- US Core CareTeam Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-careteam)
- US Core RelatedPerson Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson)

Slices

This structure defines the following Slices:

- The element 1 is sliced based on the value of Observation.category

Maturity: 3

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation | C | 0..* | Observation | US Core Observation Patient Accommodation Profile Constraints: obs-6, obs-7
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
status | ?!S Σ | 1..1 | code | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
code | S Σ | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
subject | S Σ | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | Who and/or what the observation is about
effective[x] | S Σ | 0..1 |  | Clinically relevant time/time-period for observation
effectiveDateTime |  |  | dateTime S |
effectivePeriod |  |  | Period |
effectiveTiming |  |  | Timing |
effectiveInstant |  |  | instant |
performer | Σ | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S Σ C | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Observation.status | Base | required | ObservationStatus | 📍4.0.1 | FHIR Std.
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Observation | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Observation | 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 | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Observation | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
obs-6 | error | Observation | dataAbsentReason SHALL only be present if Observation.value[x] is not present | `dataAbsentReason.empty() or value.empty()`
obs-7 | error | Observation | If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present | `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()`

Differential View

This structure is derived from Observation

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation |  | 0..* | Observation | US Core Observation Patient Accommodation Profile
status | S | 1..1 | code | registered | preliminary | final | amended +
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
code | S | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
subject | S | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | 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 |  | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Observation | C | 0..* | Observation | US Core Observation Patient Accommodation Profile Constraints: obs-6, obs-7
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 This profile does not constrain the narrative in regard to content, language, or traceability to data elements
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 | ?!S Σ | 1..1 | code | registered | preliminary | final | amended + Binding: ObservationStatus (required): Codes providing the status of an observation.
Slices for category | S | 0..* | CodeableConcept | Classification of type of observation Slice: Unordered, Open by value:$this Binding: US Core Simple Observation Category (preferred): FHIR and US Core codes for high level observation categories.
category:us-core | S | 0..1 | CodeableConcept | Classification of type of observation Binding: US Core Simple Observation Category (preferred): FHIR and US Core 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
code | S Σ | 1..1 | CodeableConcept | Patient accommodation code 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://hl7.org/fhir/us/core/CodeSystem/us-core-category
version |  | 0..1 | string | Version of the system - if relevant
code |  | 1..1 | code | Symbol in syntax defined by the system Fixed Value: accommodation
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
subject | S Σ | 1..1 | Reference(US Core Patient Profile(9.0.0-ballot)) | 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] | S Σ | 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 | Σ | 0..* | Reference(US Core Practitioner Profile | US Core Organization Profile | US Core Patient Profile(9.0.0-ballot) | PractitionerRole | US Core CareTeam Profile | US Core RelatedPerson Profile) | 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who is responsible for the observation
value[x] | S Σ C | 0..1 |  | Actual result
valueString |  |  | string S |
valueCodeableConcept |  |  | CodeableConcept S |
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 Constraints: obs-3
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(4.0.1) | Low Range, if relevant
high | C | 0..1 | SimpleQuantity(4.0.1) | 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(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence) | Related measurements 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 | Status | Usage | ValueSet | Version | Source
Observation.language | Base | preferred | Common Languages | 📍4.0.1 | FHIR Std.
Observation.status | Base | required | ObservationStatus | 📍4.0.1 | FHIR Std.
Observation.category | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.category:us-core | Base | preferred | US Core Simple Observation Category | 📦9.0.0-ballot | US Core v9.0
Observation.code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.
Observation.dataAbsentReason | Base | extensible | DataAbsentReason | 📍4.0.1 | FHIR Std.
Observation.interpretation | Base | extensible | Observation Interpretation Codes | 📍4.0.1 | FHIR Std.
Observation.bodySite | Base | example | SNOMED CT Body Structures | 📍4.0.1 | FHIR Std.
Observation.method | Base | example | Observation Methods | 📍4.0.1 | FHIR Std.
Observation.referenceRange.​type | Base | preferred | Observation Reference Range Meaning Codes | 📍4.0.1 | FHIR Std.
Observation.referenceRange.​appliesTo | Base | example | Observation Reference Range Applies To Codes | 📍4.0.1 | FHIR Std.
Observation.component.​code | Base | example | LOINC Codes | 📍4.0.1 | FHIR Std.
Observation.component.​dataAbsentReason | Base | extensible | DataAbsentReason | 📍4.0.1 | FHIR Std.
Observation.component.​interpretation | Base | extensible | Observation Interpretation Codes | 📍4.0.1 | FHIR Std.

#### Constraints

Id | Grade | Path(s) | Description | Expression
dom-2 | error | Observation | If the resource is contained in another resource, it SHALL NOT contain nested Resources | `contained.contained.empty()`
dom-3 | error | Observation | 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 | `contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`
dom-4 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated | `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`
dom-5 | error | Observation | If a resource is contained in another resource, it SHALL NOT have a security label | `contained.meta.security.empty()`
dom-6 | best practice | Observation | A resource should have narrative for robust management | `text.`div`.exists()`
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`
obs-3 | error | Observation.referenceRange | Must have at least a low or a high or text | `low.exists() or high.exists() or text.exists()`
obs-6 | error | Observation | dataAbsentReason SHALL only be present if Observation.value[x] is not present | `dataAbsentReason.empty() or value.empty()`
obs-7 | error | Observation | If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present | `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()`

This structure is derived from Observation

Summary

Mandatory: 1 element
Must-Support: 7 elements

Structures

This structure refers to these other structures:

- US Core Patient Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient)
- US Core Practitioner Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner)
- US Core Organization Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization)
- US Core CareTeam Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-careteam)
- US Core RelatedPerson Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson)

Slices

This structure defines the following Slices:

- The element 1 is sliced based on the value of Observation.category

Maturity: 3

Other representations of profile: CSV, Excel, Schematron