If the VA has all your records from your heart attacks I might appeal this to the Court of Veteran Appeals. Since you filed original claims back in 1994 and were denied that should have been your effective date. I don't understand a 0% rating for this, but I do advise you to appeal. I was rated for this CAD and got 0%. I appealed and got 60%. If you have solid evidence get a lawyer and take it to the veteran's court since you have already been to the BVA. My 0% rating was based on a truly awful C&P exam. I got more tests at VA expense and got 60%. You had heart attacks and you get 0%???? Something ain't right unless you are in perfect health today, and it still would not make sense.