Can anyone help me with this?? We have a patient who had a diagnosis of "right shoulder separation, acromioclavicular joint grade II". I know to go to dislocation for separation, but even there you have inferior, posterior, 100-200% displacement, and greater than 200% displacement. This is not the first one we've seen since ICD-10 started... but everytime I send it back to be specified further, they say "well i said grade ______". Which is nice, but I don't know what that means and that doesn't help narrow the codes down :/ And then I keep hearing over and over that they have no idea what the percentages of displacement mean and have no idea what the book is talking about.. I found this: https://www.shoulderdoc.co.uk/article/60. Which from what I'm reading (I may totally be wrong), it looks like Grade I would be a sprain for the code and Grades III-VI would be the % codes. But what about Grade II?? would that be a subluxation code since subluxations are a partial dislocation??? I'm sorry, this is just frustrating and I'm hoping someone can help! Thank you!