If your kidney disease is over stage 1, you most likely will need to get a simplified issue or guaranteed acceptance life insurance policy, which will have a limit on the amount of life insurance coverage you can purchase.
In addition, guaranteed approval life insurance plans may have graded death benefits, which means you will not have full coverage immediately from day one, but after 2-3 years your coverage will be 100% of the face amount of life insurance on your policy.
You may want to contact a life insurance broker that specializes in placing life insurance for high risk people, or consider purchasing guaranteed acceptance life insurance protection, especially if you have be turned down by other insurers.