Displ transverse fx shaft of l tibia, 7thN

This code signifies a fracture of the main part of the left lower leg bone (tibia) that is broken across its width and the bone fragments are not properly aligned. It specifically indicates that the fracture is an open wound (meaning the bone broke through the skin) of a severe nature (Type IIIA, IIIB, or IIIC) and, despite previous treatment, the bone has failed to heal properly.

Use this code for follow-up encounters where a patient is being treated for a previously diagnosed displaced transverse shaft fracture of the left tibia that was an open fracture (Type IIIA, IIIB, or IIIC) and is now complicated by nonunion. This applies when the patient is receiving ongoing care for the nonunion, such as surgical intervention, bone grafting, or prolonged immobilization.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for the open fracture type.
• Verify the laterality (left tibia) and the specific fracture type (displaced transverse shaft).
• Always sequence this code after any acute fracture codes if the nonunion is being treated concurrently with a new injury.