Torus fx lower end of left fibula, subs for fx w nonunion

This code describes a torus (buckle) fracture affecting the lower portion of the left fibula, which is a stable injury common in children. The "subsequent encounter" indicates that the patient is receiving follow-up care for this fracture, and the "nonunion" specifies that the bone fragments have failed to heal together after the expected healing period.

Use this code when documenting ongoing treatment for a patient with a previously diagnosed torus fracture of the distal left fibula where imaging or clinical assessment confirms that the fracture has not united. This applies to follow-up visits, cast changes, or evaluations for delayed healing or nonunion.

• Ensure documentation clearly states "left fibula" and "torus fracture" with evidence of nonunion.
• Verify this is a subsequent encounter, not the initial treatment for the fracture.
• Do not use for malunion; a separate code exists for that complication.