Disp fx of pisiform, unsp wrist, subs for fx w malunion

This code signifies a displaced fracture of the pisiform bone, located in the wrist, that has previously been treated but is now healing incorrectly (malunion). The specific wrist (left or right) is not documented. This indicates a complication in the healing process of a previously managed pisiform fracture.

Apply this code when a patient presents for follow-up care of a pisiform fracture that was initially treated, but imaging or clinical assessment confirms malunion. This is appropriate for subsequent encounters where the malunion is being addressed or monitored, and the specific wrist is not specified in the documentation.

• Ensure documentation clearly states "malunion" and "displaced fracture" of the pisiform.
• Verify that this is a subsequent encounter, not the initial treatment of the fracture.
• If the laterality (left or right wrist) is documented, a more specific code should be used.