Unsp disp fx of first cervcal vert, subs for fx w routn heal

This code signifies a follow-up visit for a fracture of the C1 vertebra (atlas) that was initially displaced but is now healing as expected. The specific type of C1 fracture (e.g., Jefferson, anterior arch) is not documented, or the displacement was not further specified at the time of the initial diagnosis.

Apply this code for subsequent encounters where a patient with a previously diagnosed, unspecified displaced C1 fracture is undergoing routine follow-up care and the fracture is progressing toward normal healing. Documentation should clearly indicate "subsequent encounter," "routine healing," and the specific vertebra involved (C1).

• Ensure the documentation specifies "unspecified displaced" for the C1 fracture; if the type of C1 fracture is known, a more specific code should be used.
• Verify that the encounter is for routine healing; if complications or delayed healing are present, a different seventh character is required.
• This code requires a seventh character of 'D' for subsequent encounter with routine healing; do not use 'A' for initial encounter or 'G' for subsequent encounter with delayed healing.