Disp fx of proximal phalanx of l thm, subs for fx w malunion

This code signifies a left thumb proximal phalanx fracture that has healed improperly (malunion) and is still displaced. It indicates a follow-up encounter where the patient is receiving care for this specific complication of a previously sustained fracture. The malunion implies a deformity or functional impairment resulting from the incorrect alignment during healing.

Use this code for patients presenting for follow-up care of a left thumb proximal phalanx fracture that has healed in a displaced and malunited position. This would apply when evaluating the extent of the malunion, planning corrective surgery, or managing ongoing symptoms related to the deformity. It's appropriate for subsequent visits after the initial treatment of the acute fracture.

• Ensure documentation clearly specifies "left thumb" and "proximal phalanx" to differentiate from other digits or phalanxes.
• Confirm the "malunion" is explicitly documented by the provider, indicating an abnormal healing alignment.
• Verify this is a "subsequent encounter" for the fracture, not an initial treatment or sequela of a fully healed fracture.