Clinical Document Architecture V2.0.1
2.1.0 - CI Build

Clinical Document Architecture V2.0.1, published by Health Level 7. This is not an authorized publication; it is the continuous build for version 2.1.0). This version is based on the current content of https://github.com/HL7/cda-core-2.0/ and changes regularly. See the Directory of published versions

Logical Model: IVL_PQ - Detailed Descriptions

Definitions for the IVL-PQ logical model.

1. IVL_PQ
Definition

Defines the basic properties of every data value. This is an abstract type, meaning that no value can be just a data value without belonging to any concrete type. Every concrete type is a specialization of this general abstract DataValue type.

Control1..*
2. IVL_PQ.nullFlavor
Definition

If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.

Control0..1
BindingThe codes SHALL be taken from NullFlavor
Typecode
3. IVL_PQ.unit
Definition

The unit of measure specified in the Unified Code for Units of Measure (UCUM) [].

Control0..1
Typecode
4. IVL_PQ.value
Definition

The magnitude of the quantity measured in terms of the unit.

Control0..1
Typedecimal
5. IVL_PQ.low
Definition

This is the low limit of the interval.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/PQ
6. IVL_PQ.high
Definition

This is the high limit of the interval.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/PQ
7. IVL_PQ.width
Definition

The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/PQ
8. IVL_PQ.center
Definition

The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/PQ