A C and P exam wont be ordered in at least two cases:
1. You already have sufficient evidence to award benefits, and no C and P exam is necessary. YEA
2. You are missing “something” that a C and P exam wont fix. For example, you do not have the requisite discharge, the requisite service, or, maybe you lack one of the three Caluza elements that can not be fixed by a c and p exam. A C and P exam can not “fix” no in service event or aggravation which is “one” of the three Caluza elements. The other 2 are current diagnosis and nexus. A C and P exam could possibly give a diagnosis, and it may even provide a nexus, but it wont provide an “in service event”.