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.
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).