I can't enter more than one 1099 R pensions with different codes from the same company. My spouse passed away this year and it is a joint return.

I'm sorry for your loss!

You should be able to enter more than one 1099-R from the same company.  You need to enter each 1099-R separately. 

To enter a additional 1099-Rs, please follow these steps:

1. Click on Federal > Wages & Income.
2. Scroll down to the Retirement Plans and Social Security section and click on the Start/Revisit box next to IRA, 4701(k), Pension Plan Withdrawals (1099-R). 
3. If you've already entered one (or more) 1099-Rs, you will see a screen Your 1099-R Entries.  Click on the link Add Another 1099-R (below the table).
4. On the next screen click I'll type it myself.
5. On the screen, Tell Us Which 1099-R You Have, mark the radio button for the type of 1099-R. 
6. On that same screen, for This Form 1099-R belongs to, select your spouse's name and click Continue.

If you have difficulty, respond to this thread and give the details on what is happening.