Report Abuse. Technically, one DAY without insurance is considered a lapse in coverage. If you're both generally healthy, a month without insurance is not a tragedy, but it's not highly recommended. As far as if the new insurance covers pre-existing - that depends on the plan.pdate: Yes, health insurance is what I'm referring too. Technically I won't be completely without a way to be covered because you have 60 days to elect cobra coverage which is retroactive if anything happens during May.