Question: Which episode of grey's anatomy does derek die?

Disambiguated questions and answers:
context: No context provided
question: Which number episode of grey's anatomy does derek die?
short_answers: S11 · E21
241
Season 11 Episode 21
context: No context provided
question: What's the name of the episode of grey's anatomy when derek dies?
short_answers: How to Save a Life
"How to Save a Life"

Long-form answers:
knowledge: content: Derek Christopher Shepherd,[1] M.D., F.A.C.S., also referred to as "McDreamy", is a fictional surgeon from the ABC medical drama Grey's Anatomy, portrayed by actor Patrick Dempsey
wikipage: Derek Shepherd
content: In season 11, Derek is involved in a fatal car accident while driving to the airport for his final trip to Washington. He can hear and process auditory input but is unable to speak. He is recognized by Winnie, one of the victims of a crash he assisted in earlier, who tells the surgeons that their patient's name is Derek and that he is a surgeon as well. The hospital he is taken to is understaffed and under-equipped, and his head injury is not detected quickly enough by the arrogant doctors and inexperienced interns on duty that night; although one intern does suspect Derek had a head injury, her superior repeatedly shuts down her attempts to get him a head CT, prioritizing his abdominal bleeding beforehand and having him rushed into surgery even though he is stable enough for the CT. Although the neurosurgeon on call is paged multiple times after the doctors finally discover the head injury, he takes too long to arrive, and Derek is declared brain dead. Police arrive at Meredith's door and take her to see Derek, where she consents to remove him from life support. At the time of his death, Meredith is pregnant with their third child. After quietly leaving Seattle, she gives birth to a daughter whom she names Ellis after her mother.
wikipage: In season 11, Derek is involved in a fatal car accident while driving to the airport for his final trip to Washington. He can hear and process auditory input but is unable to speak. He is recognized by Winnie, one of the victims of a crash he assisted in earlier, who tells the surgeons that their patient's name is Derek and that he is a surgeon as well. The hospital he is taken to is understaffed and under-equipped, and his head injury is not detected quickly enough by the arrogant doctors and inexperienced interns on duty that night; although one intern does suspect Derek had a head injury, her superior repeatedly shuts down her attempts to get him a head CT, prioritizing his abdominal bleeding beforehand and having him rushed into surgery even though he is stable enough for the CT. Although the neurosurgeon on call is paged multiple times after the doctors finally discover the head injury, he takes too long to arrive, and Derek is declared brain dead. Police arrive at Meredith's door and take her to see Derek, where she consents to remove him from life support. At the time of his death, Meredith is pregnant with their third child. After quietly leaving Seattle, she gives birth to a daughter whom she names Ellis after her mother.
long_answer: Derek Christopher Shepherd is a fictional surgeon from the ABC medical drama Grey's Anatomy. During Season 11 Episode 21, titled "How to Save a Life", Derek is involved in a car accident and taken to the hospital, where the doctors fail to recognize a head injury that later results in his death.