Displ oblique fx shaft of r ulna, 7thN

This code signifies a specific type of fracture involving the shaft of the right ulna, where the break is angled (oblique) and the bone fragments are not properly aligned (displaced). Importantly, this is an open fracture (meaning the bone broke through the skin) of a severe type (IIIA, IIIB, or IIIC), and the fracture has failed to heal after an initial treatment (nonunion).

This code is appropriate for subsequent encounters when a patient is being treated for a previously diagnosed and managed open, displaced, oblique fracture of the right ulnar shaft that has progressed to nonunion. This would include follow-up appointments, further surgical interventions, or ongoing management of the nonunion.

• Confirm documentation specifies "nonunion" for this specific fracture type and location.
• Ensure the encounter is "subsequent" and not the initial treatment for the fracture.
• Verify the open fracture type (IIIA, IIIB, or IIIC) is clearly documented.