Displ seg fx shaft of ulna, r arm, 7thN

This code describes a specific type of fracture involving the shaft of the right ulna, where the bone is broken into multiple pieces (segmental) and the fragments are not in their normal anatomical alignment (displaced). Crucially, this fracture is an open type IIIA, IIIB, or IIIC, meaning there is a significant wound communicating with the fracture site, and it has failed to heal properly after initial treatment (nonunion).

Use this code when documenting follow-up care for a patient who previously sustained a severe open segmental fracture of the right ulnar shaft, and the fracture has not united. This applies to subsequent encounters for ongoing management, such as surgical intervention for nonunion, wound care, or monitoring of the non-healing fracture.

• Verify the laterality (right arm) and the specific type of open fracture (IIIA, IIIB, or IIIC) are clearly documented.
• Ensure "nonunion" is explicitly stated in the medical record for this specific fracture site.
• This code is for subsequent encounters; an initial encounter would use a different code.