That looks like they are giving you the standard deduction and disallowing your itemized deductions.
Did you get any previous letters asking for proof of your itemized deductions? If you failed to send in proof or it was not accepted, they would remove them. Did you claim any deductions that are not supported by documentation? (For example, you claimed mortgage interest but did not get a 1098, or you claimed charity donations more than $5000 and did not include form 8283 and a signed appraisal.) Did you fail to include a schedule A showing the details of your itemized deduction? (This should be impossible with Turbotax, but maybe you filed by mail and left out the form or maybe you used other software.)
Ultimately you need to call the IRS and ask them what they want.
