I got a check, my 403-b was terminated. I've not received a 1099-R & need to know a code for box 7? Early distribution no exceptions, I didn't ask for the distribution?

I left a job with a 403-b, I received a check saying that my 403-b had been terminated. I've not received a 1099-R & need to know a code for box 7? Early distribution no exceptions even tho I did not ask for the distribution?