Barton's fx unsp rad, subs for opn fx type 3A/B/C w nonunion

This code signifies a Barton's fracture, which is an intra-articular fracture of the distal radius with dorsal or volar displacement of the carpus. Specifically, it indicates that the fracture is an open type IIIA, IIIB, or IIIC, meaning there is significant soft tissue damage and contamination, and the bone has failed to heal after an initial treatment (nonunion). This code is used for follow-up care after the initial treatment of the fracture.

Apply this code when documenting subsequent encounters for a patient with a previously treated open Barton's fracture (type IIIA, IIIB, or IIIC) that has developed nonunion. This includes scenarios such as follow-up appointments for ongoing management of the nonunion, preparation for revision surgery, or assessment of complications related to the nonunion.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for this specific type of open Barton's fracture.
• Verify the open fracture type (IIIA, IIIB, or IIIC) is explicitly stated in the medical record.
• Do not use this code for the initial treatment of the fracture or for malunion.