Nondisp fx of dist phalanx of l thm, subs for fx w nonunion

This code describes a situation where the patient has a fracture of the furthest bone in their left thumb, and the broken pieces are still in their normal anatomical position. The fracture has failed to heal properly, and the patient is receiving ongoing treatment for this nonunion.

This code is appropriate for follow-up encounters where a patient is being managed for a previously diagnosed nondisplaced distal phalanx fracture of the left thumb that has not united. This includes visits for cast changes, physical therapy, or surgical planning related to the nonunion. It would also be used for documentation of the nonunion itself during subsequent visits.

• Ensure documentation clearly states "nonunion" for the fracture.
• Verify the fracture is specifically of the distal phalanx of the left thumb and is nondisplaced.
• This code is for subsequent encounters; an initial encounter would use a different 7th character.