Retirement tax questions

Hold on. In checking the IRS website, www.irs.gov/retirement-plans/ira-deduction-limits, I see this: 

Traditional IRAs: no retirement plan at work:  Your deduction is allowed in full if you (and your spouse, if you are married) aren't covered by a retirement plan at work. 

 

Seems like Turbotax ought to go off of the Box 13 Retirement Plan entry to allow/disallow the traditional IRA deduction?