Displ commnt fx unsp patella, subs for clos fx w malunion

This code signifies a comminuted fracture of the kneecap that is no longer in its anatomical position (displaced) and has begun to heal incorrectly (malunion). The injury involves an unspecified patella, indicating the laterality is not documented or is unknown. This specific code is for a subsequent encounter, meaning the patient is receiving follow-up care for a fracture that was previously treated and is now healing improperly.

Use this code when a patient presents for ongoing management of a displaced comminuted patellar fracture that has developed malunion. This would apply to follow-up appointments where the malunion is being assessed, monitored, or planned for corrective intervention. It is appropriate when the initial treatment for the closed fracture has concluded, and the focus is now on the complication of malunion.

• Ensure documentation clearly states "malunion" and "subsequent encounter" for a closed fracture.
• Verify laterality (left, right) if available; "unspecified" should only be used when not documented.
• Distinguish from nonunion (failure to heal) or delayed union (slower than expected healing).