Surrogate decision-making refers to the process by which an individual, known as a surrogate, makes healthcare decisions on behalf of another person who is unable to do so themselves, often due to incapacity or illness. This concept is especially relevant in situations involving end-of-life decisions, where individuals may not be able to communicate their wishes or preferences regarding medical treatment. Surrogates typically rely on previously expressed wishes of the incapacitated person or make decisions based on what they believe to be in their best interest.