Disp fx of distal phalanx of r thm, subs for fx w malunion

This code indicates a fracture of the furthest bone in the right thumb, which has shifted out of its normal alignment. The patient is currently undergoing treatment for this fracture, and it is healing in an undesirable position, resulting in malunion.

Apply this code when documenting follow-up care for a patient whose right thumb distal phalanx fracture has healed incorrectly, leading to a deformity or functional impairment. This would be used after the initial treatment phase, during subsequent visits for management of the malunion.

• Ensure documentation clearly states "right thumb" and "distal phalanx" for specificity.
• Confirm the encounter is for follow-up care of the fracture and specifically addresses the malunion.
• Verify that the fracture was initially displaced, as indicated by the code.