Oth nondisp fx of fifth cervcal vert, subs for fx w nonunion

This code signifies a non-displaced fracture of the fifth cervical vertebra that is not healing properly (nonunion). It indicates that the patient is receiving ongoing care for this specific fracture complication after the initial treatment.

Apply this code when a patient presents for follow-up care, evaluation, or treatment related to a previously diagnosed, non-displaced C5 vertebral fracture that has failed to unite. Documentation should clearly state "nonunion" or "failed healing" of the C5 fracture and specify it as a subsequent encounter.

• Ensure documentation explicitly states "nondisplaced" and identifies the "fifth cervical vertebra."
• Verify the encounter is for ongoing care of the fracture, not the initial treatment or a sequela.
• Distinguish from malunion (S12.491P) where the fracture has healed in an unsatisfactory position.