Displ transverse fx shaft of unsp ulna, 7thM

This code signifies a specific type of ulna fracture where the break occurs in the shaft of the bone, running across its width, and the bone fragments are no longer in their normal alignment. It indicates that the patient is in a later stage of care for this injury, specifically addressing a situation where the initial open fracture (Type I or II) has failed to heal properly (nonunion).

Use this code for patients who have previously sustained an open transverse fracture of the ulnar shaft, and during a subsequent encounter, the physician documents that the fracture is displaced and has not united. This applies when the patient is undergoing follow-up care, receiving treatment for the nonunion, or being evaluated for further intervention due to the lack of healing.

• Ensure documentation clearly specifies "displaced" and "transverse fracture of shaft" of the ulna.
• Verify the original injury was an "open fracture type I or II" and that "nonunion" is explicitly stated.
• This code is for subsequent encounters; an initial encounter for the acute fracture would use a different code.