Unsp fx right patella, subs for opn fx type I/2 w nonunion

This code describes a situation where a patient has an unspecified fracture of their right kneecap that has failed to heal properly (nonunion). This specific encounter is for ongoing treatment of an open fracture, meaning the skin was broken at the time of injury, classified as either Type I or Type II according to the Gustilo-Anderson classification.

Use this code for follow-up visits, cast changes, or other ongoing management of a right patellar fracture that was initially open (Type I or II) and is now complicated by nonunion. This applies when the specific type of patellar fracture (e.g., transverse, comminuted) is not documented.

• Ensure documentation clearly states "nonunion" and specifies an "open fracture type I or II" for the initial injury.
• Confirm the encounter is for subsequent care, not the initial treatment of the fracture.
• Always look for more specific patellar fracture codes if the fracture type (e.g., transverse, longitudinal) is documented.