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-TS - Detailed Descriptions

Definitions for the IVL-TS logical model.

1. IVL_TS
Definition

A quantity specifying a point on the axis of natural time. A point in time is most often represented as a calendar expression.

Control1..*
2. IVL_TS.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_TS.value
Definition

A quantity specifying a point on the axis of natural time. A point in time is most often represented as a calendar expression.

Control0..1
TypedateTime
4. IVL_TS.inclusive
Definition

Specifies whether the limit is included in the interval (interval is closed) or excluded from the interval (interval is open).

Control0..1
Typeboolean
5. IVL_TS.operator
Definition

A code specifying whether the set component is included (union) or excluded (set-difference) from the set, or other set operations with the current set component and the set as constructed from the representation stream up to the current point.

Control0..1
Typecode
6. IVL_TS.low
Definition

This is the low limit of the interval.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/TS
7. IVL_TS.high
Definition

This is the high limit of the interval.

Control0..1
Typehttp://hl7.org/fhir/cda/StructureDefinition/TS
8. IVL_TS.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
9. IVL_TS.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/TS