Disp fx of pisiform, right wrist, subs for fx w nonunion

This code signifies a fracture of the pisiform bone in the right wrist that has shifted out of its normal alignment. Critically, the bone fragments have failed to heal together properly, indicating a nonunion, and the patient is presenting for ongoing treatment of this unhealed fracture.

This code is appropriate for follow-up encounters where a patient with a previously diagnosed displaced right pisiform fracture is being treated for a nonunion. This includes visits for cast changes, wound care, physical therapy, or surgical planning specifically addressing the unhealed fracture.

• Ensure documentation clearly states "nonunion" and specifies the right pisiform.
• Verify the encounter type is "subsequent" for the fracture, not the initial treatment.
• Always code laterality (right) accurately for wrist fractures.