Unsp disp fx of fifth cervcal vert, subs for fx w nonunion

This code signifies a displaced fracture of the fifth cervical vertebra where the specific type of fracture (e.g., comminuted, transverse) is not documented. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care after the initial treatment phase.

Use this code for a patient presenting for ongoing management of a previously treated, but unhealed, displaced C5 vertebral fracture when the fracture type is unspecified. Documentation should clearly indicate a nonunion and that this is not the initial encounter for the fracture.

• Ensure documentation specifies "nonunion" and not just delayed healing or malunion.
• Verify that the encounter is for subsequent care, not the initial treatment of the fracture.
• Always look for more specific fracture type documentation (e.g., S12.420K for Type II odontoid fracture) before defaulting to "unspecified."