I did not receive from 1099-HC but only a 1095-C. I am new in the US and did not realised that I could find my subscriber number on my insurance card. I thought I do not have one as I do not have 1099-HC. I therefore entered 'NA' as my subscriber number, and filed my tax returns already. Now that I realised that I do have a subscriber number. How do I amend this piece of information?
