No, in that box you only enter the portion of medical expenses that exceed 7.5% of AGI or the amount of the distribution on which you are claiming this exception, not the entire amount of medical expenses. Click the Learn More link where TurboTax explains this (although this help page has not yet been updated to reflect the change from 10% to 7.5% of AGI).
TurboTax puts on Form 5329 line 2 with code 05 whatever amount you enter in the box, so the amount that you enter in the box must not exceed 92.5% of AGI. (92.5% = 100% - 7.5%)
