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

This code signifies a forward slippage of the third cervical vertebra (C3) over the fourth cervical vertebra (C4) due to a previous traumatic injury, where the fracture has not healed properly (nonunion). This specific instance refers to a patient presenting for follow-up care or continued treatment of this unhealed fracture.

Apply this code for patients receiving ongoing treatment for a previously diagnosed traumatic spondylolisthesis of C3 with documented nonunion. Documentation should clearly indicate the traumatic origin of the spondylolisthesis, its displaced nature, involvement of the third cervical vertebra, and the current encounter being for the nonunion.

• Ensure documentation specifies "traumatic" origin and "displaced" nature of the spondylolisthesis.
• Verify the specific cervical vertebra involved is C3.
• Confirm the encounter is for the nonunion of the fracture, not initial treatment or routine follow-up of a healed fracture.