Unsp physl fx low end ulna, unsp arm, subs for fx w malunion

This code signifies a growth plate fracture at the lower end of the ulna that has healed improperly, resulting in a deformity. The specific type of growth plate injury is not documented, and the affected arm is also unspecified. This code is used for follow-up care of this malunion.

This code is appropriate for subsequent encounters when a patient presents for treatment or evaluation of an unstated type of physeal fracture of the distal ulna that has healed in a misaligned position. It is used when the initial injury occurred on an unspecified arm and the current visit addresses the resulting malunion.

• Ensure documentation clearly states "malunion" and that the encounter is not for the initial fracture treatment.
• Verify that the specific type of physeal fracture (e.g., Salter-Harris type) is not documented, and the arm laterality is also unspecified.
• Always look for more specific codes if the physeal fracture type or laterality is known.