Displ commnt fx shaft of ulna, l arm, 7thR

This code signifies a complex injury involving the left ulna, specifically a comminuted fracture of the shaft where the bone fragments are no longer in their normal alignment. It further specifies that this is an open fracture, indicating a break in the skin, and is being managed during a subsequent encounter for a malunion, meaning the fracture has healed in an incorrect anatomical position.

This code is appropriate for follow-up encounters where a patient is being treated for a malunion of a previously sustained, displaced, comminuted open fracture (Type IIIA, IIIB, or IIIC) of the left ulnar shaft. This would include scenarios such as surgical correction of the malunion, cast changes, or ongoing physical therapy related to the improperly healed fracture.

• Ensure documentation clearly specifies "left arm" and "subsequent encounter" for a malunion.
• Verify the original fracture was indeed an open fracture type IIIA, IIIB, or IIIC.
• Distinguish from nonunion (failure to heal) or routine follow-up without malunion.