Stress fracture, left radius, subs for fx w malunion

This code signifies a stress fracture of the left radius that is currently undergoing treatment for a malunion. A malunion indicates that the fracture has healed in an unsatisfactory position, leading to functional impairment or deformity. This specific encounter is for ongoing management of this complicated healing process.

Apply this code when a patient presents for follow-up care, evaluation, or treatment related to a previously diagnosed stress fracture of the left radius that has healed incorrectly. Documentation should clearly state "malunion" and specify the left radius, along with the "subsequent encounter" status. This code is appropriate for visits addressing the complications of the malunion, such as pain management, physical therapy, or surgical planning for corrective osteotomy.

• Ensure documentation explicitly states "malunion" and specifies the left radius.
• Verify the encounter type is "subsequent" for ongoing care, not initial or sequela.
• Distinguish from nonunion (M84.334N), where the fracture has not healed at all.