Unsp fracture of left femur, subs for clos fx w nonunion

This code signifies a left femur fracture of an unspecified nature that has not healed properly (nonunion) and is being managed in a subsequent encounter. The fracture itself is closed, meaning the skin remains intact over the injury site. This indicates ongoing treatment or evaluation for a previously diagnosed and treated femoral fracture that has failed to unite.

This code is appropriate for follow-up visits where a patient is being treated for a nonunion of a closed left femoral fracture, and the specific type of fracture (e.g., transverse, spiral) was not documented or is unknown. This includes scenarios such as cast changes, physical therapy evaluations, or imaging studies to assess the nonunion's progression. It should be used when the patient is beyond the initial healing phase and the nonunion is the primary focus of the encounter.

• Ensure documentation clearly states "nonunion" and "subsequent encounter" for a closed left femur fracture.
• Avoid using this code for initial treatment or for fractures that are actively healing without complications.
• If the specific type of femoral fracture is documented, a more specific code from the S72 category should be used instead.