On July 18, 2016, CMS held the annual summer "crosswalk/gapfill" meeting for new AMC CPT codes to be used in CY2017. CMS posts the full day's video online, here and here. (For a moment, I had both morning and afternoon videos playing simultaneously on my browser, which was interesting.)
Powerpoint and other files presented at the meeting are in the cloud, here. This is a zip file; click the download arrow near the top.
Note that some presenters verbally corrected errors in their presentations. For example, relative to the archived deck, AMP changed its recommended crosswalk for 813X7X (methylated Sept9) to 81288.