Oth physl fx lower end rad, left arm, subs for fx w malunion

This code signifies a fracture affecting the growth plate (physis) at the lower end of the left radius, which is not further specified as Salter-Harris type I, II, III, or IV. The fracture has healed in an unsatisfactory position, resulting in a malunion. This code is used for follow-up care after the initial treatment of the fracture.

This code is appropriate for documenting subsequent encounters for a patient who previously sustained a physeal fracture of the distal left radius, and imaging or clinical assessment confirms that the fracture has healed with an anatomical deformity (malunion). It should be used when the patient is receiving ongoing treatment, evaluation, or management related to this specific complication of the original fracture.

• Ensure documentation clearly specifies "left arm" and "malunion" for accurate code assignment.
• Verify that this is a subsequent encounter, not the initial treatment of the fracture or a sequela encounter.
• Distinguish from nonunion (failure to heal) or delayed union (healing taking longer than expected).