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

This code describes a situation where a patient has a fracture of an unknown tarsal bone in their right foot that is healing improperly, resulting in a deformity or misalignment of the bone fragments. This malunion is being addressed in a subsequent encounter, meaning the initial treatment for the fracture has already occurred.

Use this code when a patient presents for follow-up care of a right foot tarsal fracture that has healed in an unsatisfactory position, leading to functional impairment or pain. This applies to situations where the specific tarsal bone involved was not documented or is unknown. It is appropriate for ongoing management, evaluation of the malunion, or planning for corrective procedures.

• Ensure documentation clearly states "malunion" and specifies the right foot.
• Verify that the encounter is for follow-up care of the fracture, not the initial treatment.
• If the specific tarsal bone is identified, a more precise code from the S92.2- series should be used.