Dislocation of C0/C1 cervical vertebrae, initial encounter

This code signifies an atlanto-occipital dislocation, which is a severe injury involving the separation of the skull (occiput) from the first cervical vertebra (atlas). This type of dislocation often results in significant neurological compromise due to its proximity to the brainstem.

Use this code for a newly diagnosed atlanto-occipital dislocation in a patient presenting for initial treatment. Documentation should clearly state "dislocation of C0/C1" or "atlanto-occipital dislocation" and confirm the initial encounter for this specific injury.

• Ensure documentation specifies "dislocation" and not a subluxation or fracture without dislocation.
• Verify laterality if applicable, though C0/C1 is typically a midline structure.
• Always confirm the "A" for initial encounter; subsequent encounters will require different seventh characters.