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

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

Use this code for follow-up visits where a patient is being treated for a left first metacarpal shaft fracture that is documented as nondisplaced and has developed a nonunion. This applies to situations where the physician is assessing the nonunion, considering further interventions, or managing the patient's condition related to the unhealed fracture.

• Ensure documentation clearly specifies "nondisplaced" and "nonunion" for the left first metacarpal shaft.
• Verify this is a subsequent encounter, not the initial treatment for the fracture.
• Confirm the laterality is "left hand" to avoid coding errors.