Nondisp seg fx shaft of ulna, unsp arm, 7thM

This code signifies a fracture of the ulna bone in the forearm that has broken into multiple segments but remains in its natural alignment. The fracture is an open type I or II, meaning there is a wound communicating with the fracture site, and the bone has failed to heal properly after an initial treatment. This specific code is used for follow-up care related to this nonunion.

This code is appropriate for documenting subsequent encounters for patients who have previously sustained an open segmental ulna shaft fracture (Type I or II) and are now being treated for a nonunion of that fracture. This includes follow-up appointments, evaluations for further intervention, or ongoing management of the nonunion.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for the open fracture.
• Verify the fracture is indeed segmental and involves the shaft of the ulna, not the proximal or distal ends.
• Confirm the original open fracture was classified as Type I or II to accurately apply this code.