Oth fx third MC bone, left hand, subs for fx w delay heal

This code signifies a fracture of the third metacarpal bone in the left hand that is not a Salter-Harris or Boxer's fracture, and the patient is presenting for follow-up care where the fracture is not healing at the expected rate. This indicates a complication in the healing process of a previously diagnosed third metacarpal fracture.

Apply this code when a patient with a known left third metacarpal fracture (excluding Salter-Harris and Boxer's types) returns for an appointment, and the physician documents delayed union or non-union. This is appropriate for subsequent encounters after the initial treatment, where the fracture has not yet fully healed.

• Ensure documentation clearly specifies the left hand and the third metacarpal.
• Verify that the encounter is for follow-up care of a fracture with documented delayed healing.
• Confirm the fracture type is not a Salter-Harris or Boxer's fracture, as those have specific codes.