Fx unsp tarsal bone(s) of left foot, subs for fx w malunion

This code signifies a left foot injury involving an unspecified tarsal bone fracture that has previously been treated but is now experiencing malunion. Malunion indicates that the bone has healed, but in an anatomically incorrect or functionally impaired position. This is a subsequent encounter, meaning the patient is presenting for follow-up care related to this specific healing complication.

This code is appropriate for patients presenting for evaluation or management of a previously treated left tarsal fracture that has healed with malunion. This could include follow-up appointments for conservative management of the malunion, or pre-operative assessments for corrective surgery. It is used when the malunion is the primary focus of the encounter.

• Ensure the documentation clearly specifies "left foot" and a tarsal bone fracture.
• Verify that the encounter is for a "subsequent encounter" and that "malunion" is explicitly documented as the healing complication.
• Do not use this code for nonunion; a different code series applies for that complication.