Fx unsp phalanx of right thumb, subs for fx w malunion

This code signifies a malunion of a previously fractured, unspecified phalanx of the right thumb. Malunion indicates that the fracture has healed, but in an anatomically incorrect or functionally impaired position. This is a subsequent encounter, meaning the initial treatment for the fracture has already occurred.

Utilize this code when a patient presents with a healed right thumb phalanx fracture that has resulted in a malunion, and they are receiving ongoing care or evaluation for this specific complication. This would apply to follow-up visits where the malunion is being assessed, managed, or considered for corrective intervention.

• Ensure documentation clearly specifies "malunion" and not just "nonunion" or "delayed healing."
• Verify the laterality (right thumb) and the specific phalanx, if documented, to ensure the most precise code is selected.
• Confirm this is a subsequent encounter for the fracture, not an initial treatment or a sequela.