Clinical Document Architecture
2.0.1-sd - release
Clinical Document Architecture
2.0.1-sd - release
Clinical Document Architecture, published by Health Level 7. This guide is not an authorized publication; it is the continuous build for version 2.0.1-sd built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/CDA-core-sd/ and changes regularly. See the Directory of published versions
| Official URL: http://hl7.org/cda/stds/core/StructureDefinition/RTO-PQ-PQ | Version: 2.0.1-sd | |||
| Active as of 2025-09-17 | 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 Template, Differentials, Snapshots and how the different presentations work.
This structure is derived from QTY
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources 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 Elements defined in Ancestors:@nullFlavor Base for all types and resources 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 | Conformance | ValueSet | URI |
| RTO_PQ_PQ.nullFlavor | required | CDANullFlavorhttp://hl7.org/cda/stds/core/ValueSet/CDANullFlavorFrom this IG |
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources 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 | Conformance | ValueSet | URI |
| RTO_PQ_PQ.nullFlavor | required | CDANullFlavorhttp://hl7.org/cda/stds/core/ValueSet/CDANullFlavorFrom this IG |
This structure is derived from QTY
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 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) | |
| numerator |
0..1 | PQ | ||
| denominator |
0..1 | PQ | ||
| Documentation for this format | ||||
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources 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 | Conformance | ValueSet | URI |
| RTO_PQ_PQ.nullFlavor | required | CDANullFlavorhttp://hl7.org/cda/stds/core/ValueSet/CDANullFlavorFrom this IG |
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| RTO_PQ_PQ |
1..* | QTY | XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources 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 | Conformance | ValueSet | URI |
| RTO_PQ_PQ.nullFlavor | required | CDANullFlavorhttp://hl7.org/cda/stds/core/ValueSet/CDANullFlavorFrom this IG |
This structure is derived from QTY
IG © 2019+ Health Level 7. Package hl7.cda.uv.core#2.0.1-sd based on FHIR 5.0.0. Generated 2025-09-17
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