Every life insurance contract issued in this country carries a contestability period, and it runs two years from the issue date in most states. During that window, if the insured dies, the carrier has the right to go back and verify everything on the application. After the window closes, that right largely goes away.
What they're looking for is material misrepresentation. Material means it would have changed the decision or the price. An unreported tobacco habit, a cardiac workup you left off, a DUI, a private pilot's license nobody mentioned. If they find one during the two years, the carrier can rescind the contract, return the premiums, and pay nothing. If they find the same thing in year three, the contract generally stands.
It's not a fraud hunt over trivia. A wrong middle initial or a two-pound weight discrepancy doesn't rescind anything. The standard is whether an accurate answer would have produced a different underwriting outcome.
The suicide clause sits next to this and runs on its own two-year clock. Death by suicide inside that window typically returns premiums rather than the death benefit. Outside it, the death benefit pays like any other claim.
Two things restart the clock, and people don't expect either one. Reinstating a policy after a lapse starts a fresh contestability period on the reinstated coverage, because reinstatement involves a new statement of health. And a material increase in coverage on an existing contract usually opens a new window on the increase, though not on the original amount.
The practical takeaway is on the front end. Answer the application completely, including the things you'd rather not put in writing, and let the underwriter price them. A policy issued at a worse rate class still pays. A policy rescinded in month fourteen doesn't, and your family finds that out on the worst day they've had.