f766d2e3_s_for_Organizing_Paper_Clutter__Why_
[0] Medical Bills [How Long?] 1 year or until paid off [Why?] 
You'll need them to claim any high costs as tax write-offs. Save unpaid bills until they're paid in full—and then save the final proof of payment for 1 year.
How To Organize Papers - Tips for Organizing Paper Clutter
Why?