Nondisp fx of triquetrum bone, l wrs, subs for fx w nonunion

This code signifies a fracture of the triquetrum bone in the left wrist that has not healed properly, resulting in a nonunion. The bone fragments remain in their anatomical position without significant displacement. This diagnosis indicates that the patient is receiving ongoing care for this unhealed fracture.

Use this code for a patient presenting for follow-up care, such as cast changes, physical therapy, or surgical planning, for a previously diagnosed nondisplaced left triquetrum fracture that has failed to unite. This applies when the nonunion is confirmed and treatment is ongoing.

• Ensure documentation clearly states "nonunion" and specifies the left wrist.
• Verify the fracture was initially nondisplaced.
• This code is for subsequent encounters; an initial encounter would use a different code.