Unsp nondisp fx of sixth cervcal vert, 7thK

This code signifies a fracture of the sixth cervical vertebra that is not displaced and whose specific type is unknown, and which has failed to heal properly after initial treatment. This diagnosis indicates a complication in the healing process of a previously sustained neck injury.

Apply this code when a patient presents for ongoing management of a previously diagnosed, unspecified, nondisplaced C6 vertebral fracture that has been confirmed as nonunion. Documentation should clearly state "nonunion" of the C6 fracture, along with the "unspecified" and "nondisplaced" characteristics.

• Ensure documentation explicitly states "nonunion" and specifies the C6 vertebra.
• Differentiate from malunion, which implies healing in an incorrect position, rather than a failure to heal.
• This code requires a seventh character "K" for subsequent encounter with nonunion; do not use for initial treatment or routine follow-up without nonunion.