Subluxation of C7/T1 cervical vertebrae, initial encounter

This code signifies a partial dislocation or misalignment of the C7 and T1 vertebrae, specifically at the junction between the cervical and thoracic spine. It indicates that the articular surfaces of these vertebrae are no longer in proper apposition, but remain in partial contact. This injury often results from trauma, such as whiplash or direct impact.

Use this code for the initial encounter when a patient presents with a newly diagnosed subluxation of the C7/T1 vertebral segment. Documentation should clearly state a diagnosis of subluxation at this specific level and indicate that this is the first time the patient is receiving active treatment for this injury. This includes emergency department visits, initial physician office visits, or initial hospital admissions for the injury.

• Ensure documentation specifies "subluxation" and not a complete "dislocation" (which would be a different code).
• Verify the specific vertebral level is C7/T1; other cervical or thoracic subluxations have distinct codes.
• The "A" seventh character indicates an initial encounter for active treatment; subsequent encounters will require different seventh characters.