A computable rule that is used to define a set of clinical meanings.
Notes
- Expression constraints can be used as:
- formal constraints on the content of a particular data element in an electronic health record.
- intensional definitions of concept-based reference sets.
- machine processable queries that identify a set of matching precoordinated expressions or postcoordinated expressions.
- constraints that restrict the range of an attribute defined in the SNOMED CT concept model.
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