Can I do something about this

My father was denied a heart procedure he need to get done. Medicare told my parents they made to much money for medicare to cover it. However the only reason that my parents made to much money was b/c medicare gives them a 64.00 living expense a month..well they were 52.00 over on the budget..so when medicare denied the procedure that was on Jan 25,2009. My father had a massive heart attack on the 26th and passed away in the hospital a week later. Is there anything I can do. I don't even know what kind of lawyer I do need. or would need. My fatehr would still be here if they could have caught it in time. and they would have being the procedure was a day before hand. Can I do something?