More than 90 medical groups signed a letter to the U.S. Treasury Department opposing any changes to the tax code that would allow trial attorneys to deduct litigation expenses from their taxes in certain cases.

The American Medical Association (AMA), the American Academy of Family Physicians, and the American College of Physicians were among the letter signers.

"Changing the tax policy to allow trial attorneys to deduct court costs and other expenses would cost taxpayers $1.5 billion and increase the cost of healthcare in our nation," wrote J. James Rohack, MD, AMA immediate past-president. "This change would encourage trial attorneys to file more lawsuits."