"it goes on to state that I've had a break in my coverage and wants to know the reason for that break. "
TurboTax would tell you this in response to the question "What type of High Deductible Health Plan did you have on December 1, 2018?" only if it thought that you had an HSA.
My assumption must be that you somehow accidentally indicated to TurboTax that you had an HSA.
Rather than trying to agonize over it trying to figure it out, the easier thing would be to delete any HSA data in your return, then when you get back to the question What type of High Deductible Health Plan did you have on December 1, 2018? answer NONE as you did before. This time TurboTax should continue without comment.
To delete all HSA and HDHP data from the return, please do the following:
1. make a copy of your W-2(s) (if you don't have the paper copies)
2. delete your W-2(s) (use the garbage can icon next to the W-2(s) on the Income screen
*** Desktop***
3. go to View (at the top), choose Forms, and select the desired form. Note the Delete Form button at the bottom of the screen.
*** Online ***
3. go to Tax Tools (on the left), and navigate to Tools->Delete a form
4. delete form(s) 1099-SA (if one), 8889-T, and 8889-S (if one)
5. go back and re-add your W-2(s), preferably adding them manually
6. continue with your return.
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