1. A computer program product comprising at least one computer-readable medium storing one or more sequences of instructions, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to generate a query to retrieve a set of stored data records from an electronic data record system, the by performing the steps comprising: receiving a query request comprising a set of search criteria comprising a classification identifier; generating a classification concept query comprising at least a subset of the search criteria that includes the classification identifier; receiving a set of stored concepts associated with the classification identifier in response to submitting the classification concept query to a terminology service that manages a repository of terminology content, the terminology content comprising stored concept containers having corresponding classification identifiers; and generating the query comprising predicates corresponding to the set of stored concepts.