1099-B Incomplete

Last year I sold a country club equity membership at a loss which I'm convinced is a long term capital asset loss and therefore deductible against the long term capital gain from selling my house.  The 1099B sent by the country club has only the proceeds I received entered in Box 1d with Box 6 for gross proceeds reported to the IRS.  Since I will be entering the cost basis in TurboTax that is not listed on the 1099B based on my own calculations, is the Sales Category a Box E, Long term sale with cost basis NOT reported to the IRS?  Do I just enter the appropriate data even if it isn't listed on the 1099B?