Disp fx of distal phalanx of l thm, subs for fx w delay heal

This code signifies a fracture of the furthest bone in the left thumb, which has shifted from its normal anatomical position. The patient is currently in a phase of treatment where the fracture is not healing at the expected rate.

Apply this code when documenting follow-up care for a left thumb distal phalanx fracture that was initially displaced and is now exhibiting delayed union. This includes subsequent visits for cast changes, physical therapy, or imaging to monitor the slow healing process.

• Ensure documentation explicitly states "delayed healing" or similar terminology for the fracture.
• Verify the fracture is specifically of the distal phalanx and on the left thumb.
• Confirm this is a subsequent encounter, not the initial treatment.