Disp fx of unsp ulna styloid pro, 7thM

This code signifies a displaced fracture of the styloid process of the ulna, where the bone fragments are not properly aligned. It specifically indicates that the initial injury was an open fracture (Type I or II), and the bone has failed to heal properly, resulting in a nonunion. This code is used for subsequent encounters when the patient is receiving active treatment for this nonunion.

Use this code for follow-up visits or hospitalizations when a patient is being managed for a previously sustained open fracture of the ulnar styloid that has not healed and is now considered a nonunion. This includes scenarios such as surgical intervention for nonunion, casting changes, or ongoing medical management aimed at promoting bone healing after the initial open fracture.

• Always assign an additional code for the specific type of open fracture (e.g., S52.613B for initial encounter, S52.613D for subsequent encounter with routine healing).
• Ensure documentation clearly states "nonunion" and the "subsequent encounter" status for treatment of the nonunion.
• Verify that the original injury was indeed an open fracture type I or II, as this is a specific requirement for this code.