Nondisp transverse fx l patella, subs for clos fx w malunion

This code signifies a left patellar fracture that runs horizontally across the bone, has not shifted out of alignment, and is currently healing improperly (malunion). The patient is in a follow-up period for this closed fracture, meaning the skin over the fracture was intact at the time of injury.

Use this code for a patient presenting for ongoing care of a previously diagnosed nondisplaced transverse fracture of the left patella, where imaging or clinical assessment indicates the bone is healing in an unsatisfactory or deformed position. This applies to subsequent visits after the initial treatment, when the malunion is being addressed or monitored.

• Ensure documentation clearly states "left" patella and "transverse" fracture type.
• Verify the encounter is for a "subsequent" visit and that "malunion" is explicitly documented.
• Confirm the fracture was initially "closed" and "nondisplaced."