Nondisp fx of dist phalanx of r thm, subs for fx w malunion

This code indicates a fracture of the furthest bone in the right thumb that has not shifted out of alignment, and is currently healing improperly. Malunion signifies that the fracture fragments have united, but in an unsatisfactory position or with an abnormal angulation.

This code is appropriate for follow-up encounters where a patient is being treated for a previously diagnosed nondisplaced distal phalanx fracture of the right thumb that is now showing signs of malunion. It would be used when the physician is assessing or managing the complications of this improper healing.

• Ensure documentation clearly states "malunion" and specifies the right thumb's distal phalanx.
• Verify the encounter is for follow-up care, not the initial treatment of the fracture.
• Always check for laterality (right vs. left) and the specific phalanx involved.