I contributed $5500 to my Roth IRA in 2016. I withdrew $5000 in 2024. From everything I've read, this should not be taxable or subject to fees. In my 1099-R, the distribution code in Box 7 is J and box 2a is empty, do I need to request a corrected 1099-R?
You do not need a corrected 1099-R. The broker does not know if your withdrawal is qualified because they don't know if you have other IRA accounts. (All Roth IRA balances are combined for tax purposes. If you had contributed $5000 to a different bank, and then withdrawn $10,000 at some time in the past, the current withdrawal would represent earnings since you previously withdraw all your contributions.)
You self-certify on your tax return. Keep records in case of audit, you can be asked to prove it.
Withdrawals of contributions from Roth-IRA accounts are tax and penalty free.
In TurboTax, you must enter the amount of your prior-year Roth IRA contributions.
After you have entered your form 1099-R, TurboTax will take you back to the summary page titled Your 1099-R Entries.
On that page, click Continue and follow the TurboTax interview until you arrive at the page titled Enter Prior Year Roth IRA Contributions where you can enter the amount of your past contributions.