The articular surface was then addressed with the shaver lightly debriding this away. The cartilage was essentially right off the bone. This continued until there was a stable base. Using an Arthrex punch, these drill holes were placed approximately 3 to 5 mm from one another throughout this failry narrow albeit long on the AP dimension defect. This measured approximately 8mm x 15mm, from side to side 8mm, and from front to back 15 to 20mm.

The AAOS 2005 bulletin states to report 29879 if documentation supports that debridement was performed down to "bleeding bone." The description of 29879 states abrasion arthroplasty or multiple drilling or microfracture. Should 29877 be used and not 29879 with the above dictation? Any thoughts are greatly appreciated!!! Thank You