But what happens if you were disease-free at the time of buying the policy, but developed a condition after three or four years? Should you disclose this condition to the insurer? “Insurers typically ask for more disclosure only if you apply for higher coverage. Otherwise, renewal is on as-is basis. They don't ask for additional information about your health at the time of renewal,” says Prawal Kalita, director-benefit solutions, JLT Independent Insurance Brokers. In other words, it is not mandatory to do so. If you seek more coverage, it will become mandatory to declare the disease. The insurer may choose to increase the premium or not provide cover. But, if you continue with the existing policy, the insurer will have to provide cover in case you are hospitalised or have other complications.