Critical illness insurance pays a defined benefit when a diagnosed condition meets the policy's listed definition and other requirements. Covered illnesses, severity thresholds, waiting periods, and survival periods vary. It often pays a lump sum rather than reimbursing every medical expense, so it complements rather than duplicates health insurance.

A Nepalese buyer should compare precise definitions of conditions such as cancer or stroke rather than only the number of illnesses advertised. Early-stage disease may receive a smaller benefit or no benefit. Check whether a claim reduces the main life insurance death benefit or ends the rider.