Oth fx low end unsp ulna, 7thH

This code signifies an open fracture of the lower end of the ulna, where the bone has broken through the skin, classified as Type I or II. It specifically applies to a subsequent encounter for this injury, indicating that the initial treatment has occurred, but the fracture is not healing at the expected rate.

Use this code when a patient presents for follow-up care of an open distal ulnar fracture (Type I or II) that is exhibiting delayed union. This would typically be documented by the physician noting insufficient callus formation or persistent pain beyond the normal healing timeframe for such an injury.

• Ensure documentation clearly specifies "delayed healing" for an open fracture type I or II.
• Verify the encounter is subsequent, not initial, for this specific fracture.
• Confirm the fracture location is the lower end of the ulna, not another part of the forearm.