Displ commnt fx unsp patella, 7thM

This code signifies a complex patellar fracture where the bone is broken into multiple fragments and the pieces are not in their normal alignment. It specifically indicates that the initial injury was an open fracture (Type I or II), meaning the skin was broken, and the bone has failed to heal properly in a subsequent treatment period.

This code is used when a patient presents for ongoing management of a previously treated open comminuted patellar fracture (Type I or II) that has not achieved bony union. This would include follow-up appointments, surgical interventions for nonunion, or other treatments aimed at promoting healing after the initial acute phase.

• Ensure documentation clearly states "nonunion" and specifies the initial open fracture type (I or II).
• Verify that the encounter is for subsequent care, not the initial treatment of the fracture.
• Do not use for malunion or delayed union; a specific nonunion diagnosis is required.