HL7 Czech Imaging Report IG
0.1.0-ballot - ci-build CZ

HL7 Czech Imaging Report IG, published by HL7 Czech Republic. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7-cz/img/ and changes regularly. See the Directory of published versions

## Extension: Extension: HL7IDR DiagnosticReport Comparison Study

Official URL: https://hl7.cz/fhir/img/StructureDefinition/HL7IDRComparisonStudy | Version: 0.1.0-ballot | Highlight text changes?
Draft as of 2026-05-26 | Computable Name: HL7IDRComparisonStudiesExt

Studies used for comparison in part of diagnostic reporting

Context of Use

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

- Element ID: `DiagnosticReport`

Usage info

Usages:

- Use this Extension: Diagnostic Report: Imaging Report (CZ)

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

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

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension: HL7IDR DiagnosticReport Comparison Study
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://hl7.cz/fhir/img/StructureDefinition/HL7IDRComparisonStudy"
value[x] |  | 0..1 | Reference(Imaging Study (CZ) | Basic-ImagingSelection: General) | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension: HL7IDR DiagnosticReport Comparison Study
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://hl7.cz/fhir/img/StructureDefinition/HL7IDRComparisonStudy"
value[x] |  | 0..1 | Reference(Imaging Study (CZ) | Basic-ImagingSelection: General) | Value of extension
Documentation for this format

#### 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()`

Summary

Simple Extension with the type Reference: Studies used for comparison in part of diagnostic reporting

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension: HL7IDR DiagnosticReport Comparison Study
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "https://hl7.cz/fhir/img/StructureDefinition/HL7IDRComparisonStudy"
value[x] |  | 0..1 | Reference(Imaging Study (CZ) | Basic-ImagingSelection: General) | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension: HL7IDR DiagnosticReport Comparison Study
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://hl7.cz/fhir/img/StructureDefinition/HL7IDRComparisonStudy"
value[x] |  | 0..1 | Reference(Imaging Study (CZ) | Basic-ImagingSelection: General) | Value of extension
Documentation for this format

#### 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()`

Summary

Simple Extension with the type Reference: Studies used for comparison in part of diagnostic reporting

Other representations of profile: CSV, Excel, Schematron