The present invention relates to a message structure for electronically exchanging medical information between applications utilizing disparate medical coding systems and record architectures, the message structure comprising an optional storyline keyword that sets the context for one or more subsequent statements, each of which statements comprise a genre selected from a set of genre keywords representing message categories, a subject, comprising either a natural language string of one or more words or a nested statement, and, optionally, one or more parametrized predicates comprising a context joiner selected from a set of context joiner keywords, and a parameter comprising a natural language string of one or more words or a nested statement.