Oth physl fx low end ulna, right arm, subs for fx w nonunion

This code signifies a fracture affecting the growth plate (physis) at the distal end of the right ulna, which is currently in a state of nonunion. Nonunion indicates that the fracture has failed to heal completely after a typical healing period. This diagnosis is made during a follow-up visit for ongoing management of the unhealed fracture.

Apply this code when documenting a subsequent encounter for a patient with a previously diagnosed physeal fracture of the right distal ulna that has not united. This would be used for visits where the physician is assessing the nonunion, planning further treatment, or monitoring the progress of non-operative management for the unhealed fracture.

• Ensure documentation clearly states "nonunion" and specifies the "right arm" and "lower end of ulna."
• This code is for a subsequent encounter; an initial encounter for the same fracture would use a different seventh character.
• Verify the fracture is indeed physeal, as other types of ulnar fractures have different codes.