Unsp fx navicular bone of left wrist, subs for fx w malunion

This code signifies a follow-up encounter for a fracture of the scaphoid bone in the left wrist, where the bone has healed in an abnormal position. This malunion can lead to persistent pain, reduced range of motion, and functional impairment of the wrist.

This code is appropriate when a patient presents for ongoing management of a previously diagnosed left scaphoid fracture that has healed incorrectly. It should be used for subsequent visits where the focus is on addressing the complications or treatment of the malunion, such as pain management, physical therapy, or surgical planning for corrective osteotomy.

• Ensure documentation clearly specifies "left wrist" and "scaphoid" or "navicular" bone.
• Confirm the encounter is for a subsequent visit and that malunion is explicitly documented.
• Differentiate from nonunion, which has a separate code.