Unsp traum displ spondylolysis of 3rd cervcal vert, 7thK

This code signifies a traumatic forward slippage of the third cervical vertebra (C3) over the vertebra below it, where the exact nature of the displacement is not specified. The fracture associated with this spondylolisthesis has failed to heal properly, and the patient is presenting for follow-up care after initial treatment.

Apply this code for patients with a documented traumatic C3 spondylolisthesis, where the displacement type is not specified, and nonunion of the associated fracture is confirmed. This code is appropriate for subsequent encounters following initial treatment for the fracture. Documentation should clearly state "nonunion" and "subsequent encounter."

• Ensure documentation specifies "unspecified displaced" and "nonunion" for the fracture.
• Verify the encounter is for follow-up care, not initial treatment, due to the "K" seventh character.
• Distinguish from codes for specified types of displacement (e.g., anterior, posterior) or encounters for routine healing.