Health insurance for pre-existing illnesses is expensive but it gives financial coverage for any critical situation that might arise in the future. Compare and find all the insurers offering this."Pay a little more. Hold your patience for a certain waiting period. Start enjoying the benefits - This is the procedure for getting covered for a pre-existing disease by a health insurance company. Sounds a little burdening, isn’t it? Before reaching a negative conclusion, let us get a deeper insight about the issue.