Nondisp fx of shaft of 1st MC bone, r hand, 7thK

This code signifies a fracture of the shaft of the first metacarpal bone (thumb) in the right hand that has not displaced, meaning the bone fragments are still in their normal alignment. The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "nonunion" specifies that the bone is failing to heal properly after a typical healing period.

Use this code for a patient presenting for ongoing management of a right thumb metacarpal shaft fracture that is not healing as expected. This applies when the fracture was initially nondisplaced and the current visit addresses the complication of nonunion. This code would be appropriate for clinic visits, imaging studies, or surgical planning related to the nonunion.

• Requires a seventh character "K" for subsequent encounter with nonunion.
• Ensure documentation clearly states "nondisplaced" and "nonunion" for the shaft of the first metacarpal.
• Do not use for initial treatment or for malunion (improper alignment during healing).