Medigap insurance plans may vary state wise but the basic rules are the same and they have to be maintained strictly
. No private company on its own can change the rules and other formalities according to its whim. It is always same irrespective of company from where you are getting the medigap insurance. Currently there are 12 standard plans available in USA. They are named after English alphabet starting from A to ends with L. All the 12 plans provide different kinds of benefits and offerings to its customers. Medigap Plans H, I, and J, cannot be sold to people with prescription to drug benefits, although there is a lax of this rule for people who already have those plans and they can keep them.