Unsp nondisp fx of 3rd cervcal vert, subs for fx w nonunion

This code signifies a fracture of the third cervical vertebra that is not displaced and whose specific type is not documented. The patient is in a subsequent phase of care, and the fracture has failed to heal properly, indicating a nonunion.

Apply this code when a patient presents for ongoing management of a previously diagnosed, nondisplaced C3 vertebral fracture that has not united. Documentation should clearly state "nonunion" or "failed healing" and specify the third cervical vertebra.

• Ensure documentation explicitly states "nonunion" for a subsequent encounter.
• Distinguish from malunion (S12.201P) where the fracture has healed in a deformed position.
• Requires a seventh character "K" for subsequent encounter with nonunion; other seventh characters apply for initial or routine follow-up.