I believe I've finally stumbled across the solution.

At the top of the 1099-B form.  You have the header with the Name, Account #, Owner of Account.  Below that a checkbox with the phrase "Transactions were not reported to IRS".

This box was not selected during my initial entry, but it seems to auto-select itself via a software glitch.  The solution to the code issue was this box.

I will leave this series of chat boxes up in case someone else is struggling with the codes.

Never thought I'd miss the old Schedule D.