Oth fx right patella, subs for opn fx type I/2 w malunion

This diagnosis code indicates a fracture of the right kneecap, other than a transverse, comminuted, or unspecified type, that has been previously treated but has healed in a misaligned or deformed position. It specifically applies to open fractures initially classified as Type I or Type II according to the Gustilo-Anderson classification.

Use this code when documenting a patient presenting for follow-up care of a malunited right patellar fracture that was originally an open fracture of Gustilo-Anderson Type I or II. This would include scenarios where the patient is experiencing ongoing pain, functional limitations, or requires further intervention due to the improper healing of the previous injury.

• Ensure documentation clearly specifies "malunion" and the initial open fracture type (I or II).
• Verify the laterality is "right" and the fracture site is the patella.
• This code is for subsequent encounters; an initial encounter code would be used for the acute injury.