Oth traum nondisp spondylolysis of sixth cervcal vert, 7thK

This code signifies a follow-up encounter for a patient experiencing a non-displaced spondylolisthesis of the C6 vertebra, resulting from trauma, where the fracture has failed to heal properly. The vertebral body has slipped forward relative to the vertebra below it, but without significant displacement, and the bone fragments have not united.

Apply this code for subsequent visits where a patient is being managed for a previously diagnosed traumatic, non-displaced C6 spondylolisthesis that has developed a nonunion. Documentation should clearly indicate the traumatic etiology, the specific C6 level, the non-displaced nature of the spondylolisthesis, and the ongoing management of a fracture nonunion.

• Ensure documentation explicitly states "nonunion" of the fracture, not just delayed healing.
• Verify the encounter is "subsequent" for ongoing care, not initial treatment or sequela.
• Confirm the spondylolisthesis is "nondisplaced" and specifically at the C6 level.