Displ trimalleol fx unsp low leg, 7thK

This code signifies a complex ankle fracture involving all three malleoli (medial, lateral, and posterior) where the bone fragments are not properly aligned. The patient is in a subsequent phase of care for this fracture, and the bone has failed to heal properly without surgical intervention (closed fracture with nonunion).

Use this code for follow-up encounters when a patient with a previously diagnosed displaced trimalleolar fracture of an unspecified lower leg is being treated for a nonunion. This applies when the fracture was initially managed non-surgically or if the nonunion developed after initial closed treatment.

• Ensure documentation clearly specifies a "displaced" trimalleolar fracture and "nonunion" in a subsequent encounter.
• Verify laterality (left, right, or unspecified) is accurately reflected in the documentation; this code is for unspecified laterality.
• Distinguish from malunion, which implies healing in an unsatisfactory position, whereas nonunion indicates a complete failure to heal.