Again I am scheduled to take the COSC. And again, the study guide and practice test are the same as last year. And to make me feel like this is a racket,II obtained the 2015 study guide, and it IS THE EXACT SAME as the current. The only difference is ICD-9. I was told by AAPC that the guides are updated when there are coding changes. So, apparently there have been no Orthopedic coding changes since 2015?