Unsp fx shaft of l fibula, 7thN

This code indicates a fracture of the shaft of the left fibula where the specific type of fracture (e.g., transverse, oblique) is not documented. It signifies that the patient is in a later stage of care for a severe open fracture (Type IIIA, IIIB, or IIIC) and the bone has failed to heal properly, resulting in nonunion.

Apply this code when a patient presents for follow-up care, such as cast changes, wound care, or surgical planning, for a previously diagnosed open fibula shaft fracture that is not uniting. This is appropriate when the initial fracture type was severe and the exact morphology of the fracture is unknown or not specified in the documentation.

• Ensure documentation clearly states "nonunion" and specifies the encounter as "subsequent."
• Verify the fracture is of the fibula shaft and not another part of the fibula or tibia.
• Confirm the initial open fracture was classified as Type IIIA, IIIB, or IIIC.