Plain version: once an individual health plan is in force, the insurer's right to terminate it is tightly limited. Missing one payment does not end coverage overnight, and the insurer cannot leave the market or undo the policy whenever it likes.

Grace period for individual health benefit plans (Ins. Code §10273.6(a)): - No premium assistance: the insurer may end the plan for nonpayment only after the individual has been notified and billed and a grace period of at least 30 days since that notice has passed. Coverage continues during the grace period. - Advance payments of the premium tax credit: the grace period is three consecutive months since the last day of paid coverage. During the first month the insurer keeps collecting the advance payments and providing coverage. The general uniform provision for disability policies allows a shorter grace period for monthly premiums, but this specific rule governs individual health benefit plans.

Renewal (§10273.6): individual health benefit plans are renewable at the individual's option. The insurer may refuse only for listed reasons, such as nonpayment after the grace period, fraud or intentional misrepresentation of material fact, or moving out of the service area when coverage ends uniformly regardless of health. Health status and claims are never on the list.

Rescission after 24 months (Ins. Code §10384.17(c)): once 24 months have passed since issue, an insurer may not rescind a health insurance policy for any reason. It also may not cancel the policy, limit its provisions or raise premiums because of omissions, misrepresentations or inaccuracies in the application, whether willful or not. A rescission still allowed inside that window requires fraud or intentional misrepresentation, with 30 days' notice by certified mail.