Oth fx shaft of left femur, subs for clos fx w nonunion

This code indicates a fracture in the main body (shaft) of the left thigh bone that is not healing properly, specifically during a follow-up visit after the initial injury. The fracture is currently closed, meaning the skin is intact over the injury site, but the bone fragments have failed to unite as expected.

Use this code for subsequent encounters where a patient is being treated for a nonunion of a previously diagnosed closed fracture of the left femoral shaft. This applies when the physician is assessing the nonunion, planning further treatment for it, or managing complications related to the nonunion.

• Always confirm laterality (left femur) and the specific part of the bone (shaft).
• Ensure documentation clearly states "nonunion" and that the fracture is currently "closed."
• This code requires an additional code for any associated external cause of the injury.