A SNOMED CT template that represents an expression in which one or more elements are replaced by SNOMED CT template slots.
Notes
An expression template includes one or more predefined variables which when replaced by appropriate values creates a conformant expression.
An expression template can be used to specify how data items entered via several controls in a structured user interface should be combined to represent a composite meaning.
Expression templates are also used to formally represent meaning bindings associated with different data entry contexts.
Expression templates are one of several types of templates defined by the SNOMED CT Template Syntax Specification.
The example expression template below specifies a meaning binding for a family history data entry context. In this context, a subtype of will be interpreted as the value of the attribute. Similarly, the concept or one of its subtypes will be interpreted as the value of the attribute. The template assigns the names @disease and @subject to these slots, which allows them to be referenced from specific user interface controls.
If is entered in the @disease slot and is entered in the @subject slot, the result is the expression , shown below, stating that the father of the patient has (or had) .