A 2016 study by Johns Hopkins found similar results: iatrogenesis kills 250,000 Americans each year[1].

"The Johns Hopkins team says the CDC’s way of collecting national health statistics fails to classify medical errors separately on the death certificate. The researchers are advocating for updated criteria for classifying deaths on death certificates."

Doctors don't keep a record of the people they kill, just like the military or the police doesn't keep track of the civilians they kill.

[1]https://www.hopkinsmedicine.org/news/media/releases/study_su...