TurboTax does not have any way to automatically include the IRS-suggested explanation statement for a rollover from a traditional IRA to an employer plan. Since it's not uncommon for the IRS to request an explanation to confirm that the rollover was actually completed (because employer plans do not report to the IRS receipt of any rollovers), particularly if the Form 1099-R has code 1, 2 or 7 instead of code G, you can prepare an explanation statement outside of TurboTax and include it with your printed and mailed tax return.
