No, You are not required to notify the company regarding any complication or health issue. If the policyholder is hospitalized, the company will automatically come to know of it. Otherwise, no need to inform the company about any such policy.

Yes, Health Insurance covers you for everything, provided you were hospitalized, be it for any reason; due to accident, illness, or disease. If someone met with an accident and he is hospitalized, then his mediclaim policy will pay for his bills, no exceptions.

The plus point of sticking with one company is that if someone is suffering from any pre-existing disease at the time of commencement of policy, those complications will be covered after 4 years. Until portability is introduced in India, this is the single biggest advantage to stick with one company for long.

Yes it is possible to shift to another hospital for reasons of requirement, of better medical procedure. However, this will be evaluated by the TPA on the merits of the case and as per policy terms and conditions. Note that it would be prudent if you check the network hospital list and go to the best hospital in the beginning itself rather than changing midway.