In some cases, you may be denied veterans benefits by receiving a 0% disability rating. This means that the VA acknowledges you have an issue, but does not believe you are disabled as a result. Alternatively, you may find yourself with a lower disability rating than you believe your situation deserves.
In either of these cases, you have the option to file a Notice of Disagreement (NOD) with the Regional Office up to one year after the rating decision. This is true even if the Regional Office sends you a misleading notification that you must respond within 60 days of the claim or the file will be shelved.