Deductions & credits
In part, you are correct. However, the total on Line 4a of Form 1040 is going to be the total of all Forms 1099-R. Only the taxable portion will be carried to Line 4b.
For more explanation about the distribution codes, see the following excerpt or click on the link for 2019 IRS Publication 590-B Distributions from Individual Retirement Arrangements (IRAs), and scroll to page 19.
