Nondisp fx of navicular of left foot, subs for fx w nonunion

This code signifies a fracture of the navicular bone in the left foot that has not shifted from its normal anatomical position. The fracture is in a stage where it has failed to heal properly, and the patient is presenting for follow-up care related to this nonunion.

Apply this code when a patient with a previously diagnosed nondisplaced left navicular fracture is seen for ongoing management of a confirmed nonunion. This includes visits for evaluation, treatment planning, or intervention related to the persistent lack of healing.

• Ensure documentation clearly states "nonunion" and specifies the left foot navicular bone.
• Verify the fracture was initially nondisplaced; if displaced, a different code would be appropriate.
• This "K" seventh character indicates a subsequent encounter for a fracture with nonunion, distinguishing it from initial or routine follow-up care.