For years, the non-profit National Veterans Legal Services Program (NVLSP) screened Board of Veterans' Appeals decisions, seeking a case involving denial of disability compensation to a veteran suffering from chronic service-related pain but due to a condition that doctors couldn't diagnose. Such a case has arisen, and its outcome, if it stands, could benefit thousands of veterans who have had VA compensation claims for pain denied for lack of a medical diagnosis. For more details, see this Military Advantage post.