I first attended a lecture on the "upcoming" ICD-10 changes that were expected in 1991 (when the rest of the world started transitioning). On October 1, 2015, a mere 24 years and countless lectures later, the U.S. finally adopted ICD-10 (via ICD-10-CM and PCS, which are both unique to the U.S. at this time).
Sometimes you see documentation in the medical record entered by one physician and then by nobody else. Sometimes you see documentation entered by one physician and copy/pasted by everyone else.