The main purpose of this legislation is to expand Medicare coverage to include ambulance services that do not involve transporting patients. This aims to ensure that individuals receive necessary medical assistance at the scene of an emergency or during medical support, even if they are not transported to a hospital. Key provisions of the legislation include a specific amendment to the Social Security Act. It clarifies that ambulance services covered by Medicare will now include services provided at the scene of an emergency, regardless of whether the patient is transported.