An advanced healthcare directive, also known as a living will or healthcare power of attorney, is a legal document that outlines your wishes for medical treatment if you become incapacitated and are unable to make decisions for yourself. It also allows you to appoint someone to make medical decisions on your behalf, known as a healthcare proxy or agent.

An advanced healthcare directive typically includes two components: a living will and a healthcare power of attorney. A living will is a document that states your preferences for end-of-life care, such as whether or not you want to be placed on life support if you are terminally ill or in a vegetative state. A healthcare power of attorney, on the other hand, allows you to appoint someone to make medical decisions on your behalf in the event that you are unable to do so.