A named category of like concepts (a semantic type) that is specified in the vocabulary declaration of an attribute in an information model. It constrains the intent of the coded element while deferring the binding of the element to a specific set of codes until later in the specification process.

A uniquely identifiable set of valid concept identifiers. Value sets constrain the permissible content for a coded element in an information model or data type specification.

The mechanism of identifying specific codes to be used to express the semantics of coded model elements in information models or coded data type properties. Vocabulary Binding may bind the coded element or data type property to a single fixed value code, or may bind it to a Value Set Assertion.