Nondisp fx of nk of 4th MC bone, l hand, 7thG

This code signifies a fracture of the neck of the fourth metacarpal bone in the left hand that has not shifted out of alignment. It is used when the patient is presenting for follow-up care, and the fracture is not healing at the expected rate.

Apply this code for a patient returning for an office visit or hospital outpatient encounter to monitor a previously diagnosed, nondisplaced left fourth metacarpal neck fracture that is exhibiting delayed union. This would be appropriate when the physician documents ongoing management of the fracture due to slow healing, but not yet a nonunion.

• Ensure documentation clearly specifies "nondisplaced" and "delayed healing" for the left fourth metacarpal neck.
• Verify this is a subsequent encounter, not the initial treatment of the fracture.
• Distinguish from nonunion (M84.3x) or malunion (M84.2x) if healing issues are more severe.