Many insurance companies offer implant coverage, but their are waiting periods prior to dental implant insurance coverage. They might offer detailed implant coverage, but you may have to be on the policy for a year or more before they will cover it, and they will not cover implants due to pre-existing conditions which you had prior to the policy. Please read your policy carefully or contact your insurance agent.
It is crucial to read any dental insurance policy that you have thoroughly before signing up for implant surgery. You may find that the insurance plan will not cover it for one reason or another. At that point, you will have to decide if the surgery is going to be possible on your current budget.