Disp fx of triquetrum bone, unsp wrs, subs for fx w nonunion

This code signifies a fracture of the triquetrum bone, located in the wrist, where the bone fragments are no longer in their normal anatomical alignment. The "unspecified wrist" indicates that the laterality (left or right) is not documented. The "subsequent encounter for fracture with nonunion" specifies that this is not the initial treatment, and the fracture has failed to heal properly.

Use this code for follow-up encounters where a patient is being treated for a triquetral fracture that has not united, and the specific wrist affected is not documented. This would apply to situations such as ongoing management of a nonunion, evaluation for surgical intervention for nonunion, or conservative treatment attempts for a non-healing triquetral fracture.

• Ensure documentation clearly states "nonunion" for the fracture.
• If laterality (left or right wrist) is documented, a more specific code should be used.
• This code is for subsequent encounters; an initial encounter for a displaced triquetral fracture would use a different code.