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

This code signifies a patellar fracture that runs lengthwise, where the bone fragments are not properly aligned. It specifically indicates that the patient is receiving follow-up care for this closed fracture, and the bone has healed in an abnormal position.

Apply this code when documenting a patient's visit for ongoing management of a previously sustained, non-surgical, longitudinal patella fracture that has healed with an unsatisfactory alignment. This would typically be used for appointments addressing complications or functional limitations arising from the malunion.

• Ensure documentation clearly states "longitudinal" and "displaced" for the patellar fracture.
• Confirm the encounter is for "subsequent care" and specifically mentions "malunion" of a "closed" fracture.
• Do not use for initial treatment or for fractures that have healed correctly.