Disp fx of coronoid pro of r ulna, 7thN

This code signifies a fracture of the coronoid process, a small projection on the ulna bone in the forearm, which has shifted out of its normal anatomical position. This specific injury involves an open fracture, meaning the skin and soft tissues were broken, exposing the bone, and is further complicated by the bone failing to heal properly (nonunion). The open fracture is classified as a severe type (IIIA, IIIB, or IIIC) indicating significant soft tissue damage.

This code is appropriate for subsequent encounters (e.g., follow-up appointments, cast changes, or surgical interventions) for a patient previously diagnosed with a displaced open fracture of the right ulnar coronoid process. It should be used when documentation explicitly states the fracture is experiencing nonunion and was initially classified as an open fracture type IIIA, IIIB, or IIIC.

• Always verify laterality (right) and the specific bone/process (coronoid process of ulna).
• Ensure documentation clearly supports "nonunion" and the "subsequent encounter" status.
• Confirm the initial open fracture type (IIIA, IIIB, or IIIC) is documented, as this impacts code selection.