Unsp traum nondisp spondylolysis of 7th cervcal vert, 7thK

This code describes a non-displaced traumatic spondylolisthesis of the C7 vertebra where the specific type of spondylolisthesis is not documented. It indicates that the patient is in a subsequent phase of care for this fracture, and nonunion of the fracture fragments has been identified.

Use this code for follow-up encounters when a patient is being treated for a C7 traumatic spondylolisthesis that is non-displaced and unspecified, and the documentation explicitly states nonunion of the fracture. This applies when the initial treatment has concluded, and the focus is on managing the ongoing nonunion.

• Ensure documentation specifies "nonunion" and "subsequent encounter" for accurate code assignment.
• Verify the cervical vertebral level is C7; differentiate from other cervical levels (S12.630- or S12.639-).
• Do not use for initial encounters or for malunion; specific codes exist for those scenarios.