AU eRequesting Implementation Guide
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## Extension: AU eRequesting Fasting Precondition

Official URL: http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-fastingprecondition | Version: 0.4.0-preview
Standards status: Draft | Maturity Level: 0 | Computable Name: AUeRequestingFastingPrecondition
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 fasting precondition is a code that indicates the recommendation related to the fasting status of the patient as a precondition to the diagnostic procedure or test being requested.

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-glu-1 and ServiceRequest/order-urinemcs-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 | Fasting precondition
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-fastingprecondition"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: Pathology Fasting Status (required)
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Fasting precondition
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-fastingprecondition"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: Pathology Fasting Status (required)
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type CodeableConcept: This extension applies to the AU eRequesting Diagnostic Request profile and any derived ServiceRequest profiles. The fasting precondition is a code that indicates the recommendation related to the fasting status of the patient as a precondition to the diagnostic procedure or test being requested.

Maturity: 0

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Fasting precondition
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org.au/fhir/ereq/StructureDefinition/au-erequesting-fastingprecondition"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: Pathology Fasting Status (required)
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Fasting precondition
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-fastingprecondition"
value[x] |  | 1..1 | CodeableConcept | Value of extension Binding: Pathology Fasting Status (required)
Documentation for this format

Other representations of profile: CSV, Excel, Schematron

#### Terminology Bindings

Path | Conformance | ValueSet | URI
Extension.value[x] | required | PathologyFastingStatus `https://healthterminologies.gov.au/fhir/ValueSet/pathology-fasting-status-1` From https://tx.ontoserver.csiro.au/fhir

#### 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() |