O Orthocoderpgu True Blue Messages 1,383 Location Salt Lake City, UT Best answers 6 May 10, 2016 #1 My doc did a CMC arthroplasty and provided code 26685. Problem is that 26685 cannot be used for the thumb, and of course this was the thumb. He told me that he performed an "Eaton Procedure". Does anyone know what that is by name by chance? Thanks.