Bent bone of r ulna, subs for opn fx type 3A/B/C w nonunion

This code signifies a bent bone deformity of the right ulna, specifically occurring after an open fracture of type IIIA, IIIB, or IIIC. The "nonunion" aspect indicates that the fracture has failed to heal completely after a previous treatment attempt. This is a subsequent encounter, meaning the patient is receiving follow-up care for this ongoing issue.

Apply this code when documenting ongoing management or treatment for a patient experiencing a bent right ulnar bone due to a previously sustained severe open fracture (Gustilo-Anderson type IIIA, IIIB, or IIIC) that has not united. This would be used for visits where the nonunion is being addressed, such as for surgical planning, cast changes, or monitoring of healing progress.

• Ensure documentation clearly specifies "bent bone" and "nonunion" of the right ulna.
• Verify the original fracture was an open fracture of type IIIA, IIIB, or IIIC.
• This code is for subsequent encounters; use an initial encounter code for the initial treatment of the nonunion.