Fx unsp carpal bone, left wrist, subs for fx w nonunion

This code signifies a fracture of any of the eight carpal bones in the left wrist, where the fracture has failed to heal properly (nonunion). This diagnosis is made during a follow-up visit after the initial treatment of the fracture.

Apply this code when a patient presents for ongoing management of a left carpal bone fracture that has been diagnosed with nonunion. This would include scenarios such as surgical intervention for nonunion, casting/splinting for nonunion, or evaluation of nonunion status.

• Always confirm the laterality (left wrist) and the nonunion status from the physician's documentation.
• Ensure this is a subsequent encounter, not the initial treatment of the fracture.
• If the specific carpal bone is identified, a more precise code from the S62.0- or S62.1- series should be used.