Advance care planning (ACP) is a discussion between an incurably ill patient, a healthcare professional and if possible, a relative about preferences for end-of-life care, and ACP may improve the communication in this situation. However, in the Danish healthcare system there is no formalized and systematically used standard procedure for discussions with patients about their knowledge of their treatment options, values and preferences. In this article we review the concept of ACP, including definition, experiences from abroad and the status of ACP in Denmark.