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

This code signifies a right arm injury involving a comminuted fracture of the ulna shaft, meaning the bone is broken into multiple fragments. The fracture is displaced, indicating the bone ends are not properly aligned. This specific code is for a subsequent encounter where the open fracture (type IIIA, IIIB, or IIIC) has healed incorrectly, resulting in malunion.

Use this code when documenting follow-up care for a patient who previously sustained a severe open comminuted fracture of the right ulnar shaft. The key factor for this code is the presence of malunion, where the bone has healed in an abnormal position, requiring further medical attention. This would apply to situations like surgical correction of the malunion or ongoing management of its complications.

• Ensure documentation clearly specifies "malunion" and the "subsequent encounter" for the open fracture.
• Verify the laterality is "right arm" and the specific bone is the "ulna shaft."
• Confirm the original open fracture was classified as type IIIA, IIIB, or IIIC.