Disp fx of lateral malleolus of unsp fibula, 7thN

This code signifies a fracture of the outer ankle bone (lateral malleolus) that is no longer aligned, and the fibula involved is not specified as left or right. It specifically indicates that the fracture is an open type IIIA, IIIB, or IIIC, meaning there's a significant break in the skin and soft tissue damage, and it has failed to heal properly after an initial treatment.

This code is appropriate for use when a patient presents for follow-up care of a previously treated open lateral malleolus fracture (types IIIA, IIIB, or IIIC) that has not united. This would typically be documented after a period of conservative or surgical management has failed to achieve bone healing.

• Ensure documentation clearly specifies "nonunion" and the open fracture type (IIIA, IIIB, or IIIC).
• Verify that the encounter is for subsequent care, not the initial treatment of the fracture.
• If the laterality of the fibula is known, a more specific code should be used.