Displ spiral fx shaft of ulna, unsp arm, 7thR

This code signifies a specific type of fracture involving the shaft of the ulna, where the bone is broken in a spiral pattern and the fragments are no longer aligned. It indicates that this is a follow-up encounter for an open fracture (meaning the skin was broken) of a severe type (IIIA, IIIB, or IIIC), and the fracture has healed incorrectly, resulting in malunion.

Use this code when documenting a patient's visit for ongoing management or treatment of a previously sustained, severely open, spirally fractured ulnar shaft that has healed with an unacceptable alignment. This applies to situations where the malunion is being addressed, monitored, or is a contributing factor to the patient's current symptoms.

• Ensure documentation clearly specifies "malunion" and the "subsequent encounter" status for an open fracture.
• Verify the original fracture was indeed an open fracture of type IIIA, IIIB, or IIIC.
• Laterality is unspecified for this particular code, so if the arm is known, a more specific code should be sought.