You should submit corrected claims only when information has changed on the claim. For example: Errors were found involving diagnosis, procedure, date, or modifier. Claims contained missing, incorrect, or incomplete data according to our claim submission criteria.
In the context of Venn diagrams, the universe is not everything, but everything you're dealing with right now. Let's deal with the following list of things: moles, swans, rabid skunks, geese, worms, horses, Edmontosorum (a variety of duck-billed dinosaurs), platypusses, and a very fat cat.
Usually a product of social network analysis, a network diagram is the visual display of how people (or other elements) in a network are connected. The strength of their connections is represented by varying the display of the line, where width, colour, and arrow heads communicate aspects of the relationship.