Disp fx of lateral malleolus of unsp fibula, 7thK

This code signifies a previously diagnosed fracture of the outer ankle bone (lateral malleolus) that is displaced, meaning the bone fragments are not properly aligned. The fracture is now in a subsequent phase of treatment, and the bone has failed to heal correctly (nonunion), despite the skin remaining intact over the fracture site.

This code is appropriate for documenting ongoing care for a patient whose lateral malleolus fracture, initially treated as closed and displaced, has not united. This would typically be used after initial treatment, such as casting or surgery, when follow-up imaging confirms a nonunion.

• Ensure documentation clearly states "nonunion" for a displaced lateral malleolus fracture.
• Verify the encounter is "subsequent" and not initial care for the fracture.
• Confirm the fracture was initially closed; if open, a different code would be necessary.