Fx unsp carpal bone, right wrist, subs for fx w nonunion

This code indicates a fracture of any of the eight carpal bones in the right wrist, where the fracture has failed to heal properly and the patient is presenting for follow-up care. Nonunion signifies that the bone fragments have not fused together after a sufficient healing period.

Apply this code when a patient with a previously diagnosed right carpal bone fracture is seen for ongoing management of a confirmed nonunion. This includes visits for evaluation, treatment planning (e.g., surgery for nonunion), or monitoring of the nonunion.

• Always sequence this code after the primary reason for the encounter if it's not the main focus.
• Ensure documentation clearly states "nonunion" and specifies the right wrist and an unspecified carpal bone.
• Do not use for initial fracture treatment or for malunion, which is a different complication.