Life Sustaining Treatment Preferences Act of 2008 - Amends title XVIII (Medicare) of the Social Security Act, as amended by the Medicare Improvements for Patients and Providers Act of 2008, to extend Medicare coverage to consultations regarding an order for life sustaining treatment for qualified individuals.
Directs the Secretary of Health and Human Services to make grants to eligible entities to: (1) establish new programs for orders regarding life sustaining treatment in a state or locality; (2) expand or enhance an existing program; or (3) set up a clearinghouse of information on programs for such orders and consultative services for the development or enhancement of such programs.