There are a few benefits to the DSM's multi-axial system. The five axes sum up all of the information that is most important to mental health professionals when they are treating a person. They give a snapshot of the most important things that affect a person's mental health. A full DSM diagnosis is also like a common language to mental health professionals. Even if there are different professionals, who come from different specialties or even speak different languages, they will all understand the DSM diagnosis.