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.
Coordinates are the numbers used to tell us how to get to a certain point on a grid-eg, a graph or map. The grid will have an x axis which runs horizontally, and a y axis that runs vertically. Coordinates are written in pairs. The coordinate of P on the graph above is (2, 1).