C-CDA on FHIR
2.0.0-ballot - STU 2 Ballot

C-CDA on FHIR, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ccda-on-fhir/ and changes regularly. See the Directory of published versions

## Extension: Informant Extension

Official URL: http://hl7.org/fhir/us/ccda/StructureDefinition/InformantExtension | Version: 2.0.0-ballot
Standards status: Trial-use | Computable Name: InformantExtension

The C-CDA on FHIR Informant Extension describes an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.

Context of Use

This extension may be used on the following element(s)

- Element ID: `Composition`

Usage info

Usages:

- Use this Extension: US Realm Header
- Examples for this Extension: Composition/Procedure-Note-Example

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

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

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

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
url |  | 1..1 | uri | "http://hl7.org/fhir/us/ccda/StructureDefinition/InformantExtension"
Slices for valueReference |  |  |  | Content/Rules for all slices
valueReference:valueReference | S | 1..1 | Reference(US Core Practitioner Profile | US Core PractitionerRole Profile | US Core Patient Profile | RelatedPerson) | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org/fhir/us/ccda/StructureDefinition/InformantExtension"
Slices for value[x] |  | 1..1 | Reference() | Value of extension Slice: Unordered, Closed by type:$this
value[x]:valueReference | S | 1..1 | Reference(US Core Practitioner Profile | US Core PractitionerRole Profile | US Core Patient Profile | RelatedPerson) | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Reference: The C-CDA on FHIR Informant Extension describes an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
url |  | 1..1 | uri | "http://hl7.org/fhir/us/ccda/StructureDefinition/InformantExtension"
Slices for valueReference |  |  |  | Content/Rules for all slices
valueReference:valueReference | S | 1..1 | Reference(US Core Practitioner Profile | US Core PractitionerRole Profile | US Core Patient Profile | RelatedPerson) | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org/fhir/us/ccda/StructureDefinition/InformantExtension"
Slices for value[x] |  | 1..1 | Reference() | Value of extension Slice: Unordered, Closed by type:$this
value[x]:valueReference | S | 1..1 | Reference(US Core Practitioner Profile | US Core PractitionerRole Profile | US Core Patient Profile | RelatedPerson) | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type Reference: The C-CDA on FHIR Informant Extension describes an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.

Other representations of profile: CSV, Excel, Schematron

#### Constraints

Id | Grade | Path(s) | Details | Requirements
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() |