Oth disp fx of third cervcal vert, subs for fx w nonunion

This code signifies a fracture of the third cervical vertebra (C3) that is displaced, meaning the bone fragments are not properly aligned. The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "nonunion" specifies that the bone has failed to heal completely after a typical healing period.

Apply this code when a patient presents for ongoing management of a previously diagnosed, displaced C3 fracture that has not united. Documentation should clearly state the fracture location (C3), its displaced nature, and the physician's assessment of nonunion during a follow-up visit.

• Ensure documentation explicitly states "nonunion" for the C3 fracture; "delayed union" is a different condition.
• Verify the encounter type is subsequent care, not initial treatment.
• Confirm the specific cervical vertebra involved is C3; other cervical vertebrae have distinct codes.