Oth fx lower end of unsp tibia, subs for clos fx w malunion

This code signifies a fracture in the lower portion of the tibia, near the ankle, that is currently undergoing treatment for a malunion. A malunion means the fracture has healed, but in an incorrect or misaligned position. This specific code is for a closed fracture, meaning the skin was not broken at the time of the initial injury.

Use this code when a patient presents for follow-up care, such as physical therapy, imaging, or surgical planning, related to a previously sustained closed fracture of the distal tibia that has healed with malunion. This applies to situations where the initial injury site is unspecified. It is appropriate for subsequent encounters after the initial treatment of the fracture.

• Ensure documentation clearly states "malunion" and that the fracture is "closed" and in the "lower end of the tibia."
• Verify this is a subsequent encounter, not the initial treatment or a nonunion.
• Confirm the laterality (left, right) is truly unspecified in the medical record before using this code.