NCPI FHIR Implementation Guide v2 - Local Development build (v0.2.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Value of hashing the file
| Official URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-value | Version: 0.2.0 | |||
| Draft as of 2025-12-03 | Computable Name: HashValue | |||
Value of hashing the file
Context of Use
-
Element ID:
DocumentReference.extension
This extension may be used on the following element(s)
Usage info
Usages:
- Use this Extension: Provides a list of hashes for confirming file transfers
- Examples for this Extension: DocumentReference/GF-6BAD9S7D and DocumentReference/GSS123456-01-010-SG-2
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.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Value of hashing the file | |
  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://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-value" | |
 value[x] |
0..1 | string | Value of hashing the file | |
| Documentation for this format | ||||
This structure is derived from Extension
Differential View
This structure is derived from Extension
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Value of hashing the file | |
| 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://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/hash-value" | |
| value[x] |
0..1 | string | Value of hashing the file | |
| Documentation for this format | ||||
This structure is derived from Extension
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()
|