Nondisp seg fx shaft of l femur, subs for clos fx w nonunion

This code signifies a specific type of femur fracture affecting the shaft of the left leg, characterized by a segmental break that has not displaced. Crucially, it indicates that the fracture, despite being closed, has failed to heal properly and is now in a state of nonunion, requiring ongoing management.

Use this code for follow-up encounters where a patient is being treated for a previously diagnosed, nondisplaced segmental fracture of the left femoral shaft that has not united. This applies when the patient is receiving care for the nonunion itself, such as during evaluation for surgical intervention or continued conservative management.

• Ensure documentation clearly specifies "segmental" and "nondisplaced" for the left femoral shaft.
• Verify that the encounter is for the nonunion of a closed fracture, not an initial treatment or a routine follow-up for a healing fracture.
• Confirm the laterality is explicitly documented as "left" femur.