To amend titles XVIII and XIX of the Social Security Act to promote the use of advance directives, and for other purposes.

Advance Directive Promotion Act of 2008 - Amends title XVIII (Medicare) and XIX (Medicaid) of the Social Security Act to require a service provider, Medicare+Choice organization, or prepaid or eligible organization to include the content of an advanced directive in a prominent part of an individual's current medical record. Requires a service provider to give effect to a valid advance...