TurboTax is not going to ask you about a Code M, if your 1099-R, box 7 is coded with a 1. I can't advise you as to whether or not you should file a 1099 complaint. If your intention is to rollover the amount of the outstanding loan that was deemed a distribution, then I would ask Fidelity to accept it as Rollover Contribution into an IRA. Complete your return indicating the distribution was rolled over to an IRA
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