Unsp fracture of unsp patella, subs for clos fx w delay heal

This code signifies a follow-up encounter for a patellar fracture where the specific location of the break within the patella is not documented, and the laterality (left or right) is also unspecified. Crucially, the fracture was initially closed (skin intact) and is now exhibiting delayed healing, meaning the bone is not mending at the expected rate.

This code is appropriate for subsequent visits when a patient is receiving ongoing care for a previously diagnosed, unspecified closed patellar fracture that is demonstrating delayed union. This would include scenarios where the physician is monitoring healing progress, adjusting treatment plans due to slow healing, or evaluating for potential nonunion.

• Ensure documentation clearly indicates "delayed healing" for a closed fracture.
• Verify that the initial encounter code for the acute fracture was also unspecified for both patella and laterality.
• Do not use if the fracture is open, if healing is normal, or if the patella or laterality is specified.