Displ seg fx shaft of l tibia, 7thN

This code signifies a complex, displaced fracture of the mid-shaft of the left tibia that has broken through the skin, classified as an open fracture of type IIIA, IIIB, or IIIC. The "subsequent encounter" indicates ongoing treatment for this injury, specifically addressing a failure of the bone to heal properly (nonunion).

Apply this code when documenting follow-up care for a patient with a previously diagnosed open, displaced segmental fracture of the left tibial shaft, where the fracture has not united. This typically involves patients undergoing further surgical intervention, casting, or other treatments aimed at promoting healing after an initial attempt has failed.

• Ensure documentation clearly specifies "nonunion" and the open fracture type (IIIA, IIIB, or IIIC).
• Verify laterality (left tibia) and the specific fracture location (shaft, segmental).
• This code is for subsequent encounters; an initial encounter would use a different seventh character.