Fracture of mandible of oth site, subs for fx w nonunion

This code signifies a fracture of the lower jawbone at a location other than the condylar process, subcondylar process, or symphysis, which has failed to heal properly. It indicates that the patient is receiving active treatment for this nonunion, such as surgical intervention or cast changes, during this specific encounter.

Apply this code when documentation clearly states a mandibular fracture (excluding condylar, subcondylar, or symphysis) that has not united, and the patient is seen for ongoing management of this nonunion. Supporting documentation includes operative reports for nonunion repair, follow-up notes detailing nonunion treatment, or imaging reports confirming nonunion.

• Ensure the documentation specifies "nonunion" and not just delayed healing or malunion, as these have different codes.
• Verify the exact anatomical site of the mandibular fracture to ensure it falls under "other specified site."
• Always sequence this code after the primary reason for the encounter if the nonunion is a secondary diagnosis.