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

This diagnosis code indicates a left wrist injury involving a broken pisiform bone that has shifted out of its normal alignment. It specifically applies when the fracture is not healing properly, resulting in a nonunion, and the patient is presenting for follow-up care related to this ongoing issue.

This code is appropriate for documenting subsequent encounters for patients who have previously been diagnosed with a displaced pisiform fracture of the left wrist and are now being treated for a confirmed nonunion. This includes visits for monitoring the nonunion, planning further interventions, or managing complications arising from the lack of healing.

• Ensure documentation clearly specifies "displaced" and "nonunion" for the pisiform fracture.
• Verify the laterality is "left wrist" as specified by the code.
• This code is for subsequent encounters; an initial encounter would use a different seventh character.