Clinical Document Architecture with Australian Schema
1.0.1 - active
Clinical Document Architecture with Australian Schema, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 1.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/cda-au-schema/ and changes regularly. See the Directory of published versions
| Official URL: http://hl7.org/cda/stds/core/StructureDefinition/RTO-PQ-PQ | Version: 1.0.1 | |||
| Active as of 2025-10-09 | Maturity Level: 1 | Responsible: HL7 | Computable Name: RTO_PQ_PQ | |
A quantity constructed as the quotient of a numerator quantity divided by a denominator quantity. Common factors in the numerator and denominator are not automatically cancelled out. The data type supports titers (e.g., "1:128") and other quantities produced by laboratories that truly represent ratios. Ratios are not simply "structured numerics", particularly blood pressure measurements (e.g. "120/60") are not ratios. In many cases the should be used instead of the .
Usages:
You can also check for usages in the FHIR IG Statistics
Description of Profiles, Differentials, Snapshots and how the different presentations work.
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
  @nullFlavor |
0..1 | cs | Binding: CDANullFlavor (required) | |
 numerator |
0..1 | PQ | ||
 denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| RTO_PQ_PQ.nullFlavor | Base | required | CDANullFlavor | 📦1.0.1 | This IG |
This structure is derived from QTY
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
| @nullFlavor |
0..1 | cs | Binding: CDANullFlavor (required) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| RTO_PQ_PQ.nullFlavor | Base | required | CDANullFlavor | 📦1.0.1 | This IG |
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
| @nullFlavor |
0..1 | cs | Binding: CDANullFlavor (required) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| RTO_PQ_PQ.nullFlavor | Base | required | CDANullFlavor | 📦1.0.1 | This IG |
Differential View
This structure is derived from QTY
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor Logical Container: ClinicalDocument (CDA Class) | |
| @nullFlavor |
0..1 | cs | Binding: CDANullFlavor (required) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| RTO_PQ_PQ.nullFlavor | Base | required | CDANullFlavor | 📦1.0.1 | This IG |
IG © 2024+ Australian Digital Health Agency. Package au.digitalhealth.cda.schema#1.0.1 based on FHIR 5.0.0. Generated 2025-10-09
Links: Table of Contents | QA Report | Version History | Report an issue or propose a change
