AU eRequesting Implementation Guide
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## Extension: AU eRequesting Display Sequence

Official URL: http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-displaysequence | Version: 0.4.0-preview
Standards status: Draft | Maturity Level: 0 | Computable Name: AUeRequestingDisplaySequence
Copyright/Legal: Used by permission of HL7 International, all rights reserved Creative Commons License. HL7 Australia© 2024+; Licensed Under Creative Commons No Rights Reserved.

This extension applies to the AU eRequesting Diagnostic Request profile and any derived ServiceRequest profiles. The display sequence is an integer assigned to an individual test or service in a ServiceRequest that matches the sequence as seen on a paper request form. The ability to sort on sequenceNumber more easily allows for reconciliation of paper and digital requesting data by the filler, especially for collection centre staff within a pathology collection centre.

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

- Element ID ServiceRequest

Usages:

- Use this Extension: AU eRequesting Diagnostic Request
- Examples for this Extension: ServiceRequest/order-bg-abs, ServiceRequest/order-fbc-1, ServiceRequest/order-glu-1, ServiceRequest/order-ironstudies... Show 3 more, ServiceRequest/order-obsus-1, ServiceRequest/order-urinemcs-1 and ServiceRequest/order-xray-1

### Formal Views of Extension Content

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

- Differential Table
- Snapshot Table
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Display sequence
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-displaysequence"
value[x] |  | 1..1 | integer | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Display sequence
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-displaysequence"
value[x] |  | 1..1 | integer | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type integer: This extension applies to the AU eRequesting Diagnostic Request profile and any derived ServiceRequest profiles. The display sequence is an integer assigned to an individual test or service in a ServiceRequest that matches the sequence as seen on a paper request form. The ability to sort on sequenceNumber more easily allows for reconciliation of paper and digital requesting data by the filler, especially for collection centre staff within a pathology collection centre.

Maturity: 0

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Display sequence
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-displaysequence"
value[x] |  | 1..1 | integer | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Display sequence
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-displaysequence"
value[x] |  | 1..1 | integer | Value of extension
Documentation for this format

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() |