I received a 1099-DIV from my broker reporting a non-dividend distribution for a stock that was both purchased and sold (for a loss) in 2015. I understand that this is not taxable income and that I am supposed to reduce the cost or basis of the stock by the amount of said distribution when the stock is sold.

My question is: do I need to report this reduction in cost basis on form 8949, and adjust the amount of the loss accordingly? If yes, which code do I use in column f on form 8949?

Thanks in advance..