If you already paid taxes on your Traditional IRA, then it was a Nondeductible IRA and reported on Form 8606 - Internal Revenue Service.
Next year, when you enter your 1099-R form, you will be to enter that you made Nondeductible Contributions to your IRA and TurboTax will exclude them from taxable income.
[Edited 3-12-2020|12:58 pm PST]
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