911 victim fund- SSA disability excluded from income tax return

I havent had one of these, but I think youd be better off putting the adjustment on Line 8 of Sch 1, with a description of the adjustment.

Why not ask in the same thread you started in March?  If the law says it's excluded, don't enter it anywhere, and include a cover letter pointing that out when you send it to the special address.  

There is a tax on income, not pieces of paper.  

https://accountants.intuit.com/community/proseries-tax-discussions/discussion/social-security-disability-not-taxable-due-to-injuries-911/00/351937 

I don't read Pub 3920 to mean returns from taxpayers with excluded SSDI should mail returns to a special address.  The two addresses given are for "tax forgiveness" of decedents; and for estates filing Form 706.  However, the publication does have a special phone number to call.  Have you tried that?

Questions about Publication 3920. If you have questions about the topics covered in this publication, call the IRS at 1­866­562­5227 Monday through Friday during the following times.
In English–7 a.m. to 7 p.m. local time.
In Spanish–7 a.m. to 7 p.m. local time.

However, Pub 3920 has not been revised since 2014, so most people who work at IRS have never heard of it, and might not have been alive in 2001.  

There is an example in the publication that suggests SSDI received before normal retirement age should not be reported on Form 1040.  (I agree.)  "Dan's full retirement age for social security retirement benefits is age 66. Dan's birthday is April 25. In the year Dan turned 66, Dan received $1,500 per month in benefits from the Social Security Administration. Because Dan became eligible for a full retirement benefit in May, the month after he turned 66, he can exclude only four months of his annual benefit from his income ($6,000). Dan must report the remaining $12,000 on Form 1040, line 20a"

I don't play the "trick the IRS computer" game by adding in excluded income and then subtracting a fantasy adjustment.  What has this taxpayer been doing for the last 25 years, and has it worked?  Or was SSDI just recently awarded?  Is there documentation that it is 9/11 related?