Anterior displ Type II dens fracture, subs for fx w nonunion

This code signifies a specific fracture of the odontoid process (dens) of the C2 vertebra, where the fracture fragment is displaced anteriorly and classified as a Type II injury. The "subsequent encounter" indicates ongoing treatment for the fracture, and "nonunion" specifies that the bone is failing to heal properly.

Apply this code for patients presenting for follow-up care, such as cast changes, physical therapy, or surgical planning, for an anteriorly displaced Type II dens fracture that has not healed. Documentation should clearly state "nonunion" or provide evidence of failed healing, along with the specific fracture type and displacement.

• Ensure documentation explicitly states "nonunion" and not just delayed healing.
• Verify the fracture type (Type II) and displacement (anterior) are clearly documented.
• Do not use this code for initial treatment or for fractures that are healing normally.