Open Health Hub FHIR Implementation Guide
0.1.0 - v0.1.0

Open Health Hub FHIR Implementation Guide - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

## Extension: Encrypted Attachment Extension

Official URL: https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/encrypted-attachment | Version: 0.1.0
Active as of 2025-12-03 | Computable Name: EncryptedAttachment

Extension containing encrypted attachment value

Context of Use

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

- FHIRPath QuestionnaireResponse.repeat(item).answer.value.ofType(Attachment)

Usage info

Usages:

- Use this Extension: Encrypted Questionnaire Response Profile

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.

- Text Summary
- Differential Table
- Snapshot Table
- All

This structure is derived from Extension

Summary

Simple Extension with the type string: Extension containing encrypted attachment value

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Encrypted Attachment Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/encrypted-attachment"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Encrypted Attachment Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/encrypted-attachment"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: Extension containing encrypted attachment value

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Encrypted Attachment Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/encrypted-attachment"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Encrypted Attachment Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "https://api.openhealthhub.com/OpenHealthhub/fhir/4/StructureDefinition/encrypted-attachment"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Other representations of profile: CSV, Excel, Schematron

#### Constraints

Id | Grade | Path(s) | Description | Expression
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()`