I think I found the answer elsewhere in this long thread. For the benefit of those who might read this later:
Report the following items from the 1099-OID:
- Box 1 (OID) and Box 2 (Other Periodic interest) -- add together and enter in Box 1 of 1099-INT.
- Box 3 (early withdrawal penalty) -- Box 2 of 1099-INT.
- Box 4 (Fed tax withheld) -- Box 4 of 1099-INT
- Box 5 (Market discount) - Box 10 of 1099-INT
- Box 6 (Acquisition premium) - Include in Box 1 of 1099-INT
- Box 8 (OID on U.S. Treasury obligations) - Box 12 of 1099-INT
- Box 9 - Investment expense - Enter in the Deductions section of TurboTax: Federal Taxes > Deductions > Interest expense >Investment interest expense
- Box 10 Bond premium - Box 11 of 1099-INT
- Box 11 Tax-exempt OID - Box 13 of 1099-INT
