Unsp fx unsp patella, subs for opn fx type I/2 w malunion

This code describes a situation where a patient is receiving ongoing care for a patellar fracture that was initially open (Type I or II) and has since healed improperly, resulting in malunion. The specific details of the fracture, such as its location within the patella, were not documented at the time of initial diagnosis.

Use this code for follow-up encounters where a patient presents with complications related to a previously treated open patellar fracture, specifically when malunion is identified. This would include visits for assessment of function, pain management, or planning for corrective procedures due to the malunion.

• Ensure documentation clearly states "malunion" and that the original fracture was an "open fracture type I or II."
• Verify that this is a subsequent encounter, not the initial treatment for the fracture or malunion.
• If the specific patella (right or left) is known, a more specific code should be used.