Unsp fx shaft of unsp ulna, 7thR

This code signifies a follow-up encounter for an open fracture of the shaft of the ulna, where the specific location on the shaft is not documented, and the fracture was initially classified as a severe open fracture (Type IIIA, IIIB, or IIIC). At the time of this subsequent encounter, the fracture has healed incorrectly, resulting in malunion.

Use this code when a patient presents for ongoing care of an ulnar shaft fracture that was initially open and severe, and the physician documents malunion without specifying the exact part of the ulnar shaft involved. This applies to situations like follow-up appointments for surgical correction of the malunion or continued management of the poorly healed fracture.

• Ensure documentation clearly states "malunion" and indicates a subsequent encounter for an open fracture.
• Verify the original fracture was classified as Type IIIA, IIIB, or IIIC; otherwise, a different subsequent encounter code may be appropriate.
• If the specific site on the ulnar shaft is known, a more precise code should be selected.