Subluxation of T1/T2 thoracic vertebra, subsequent encounter

This diagnosis code indicates a partial dislocation of the first and second thoracic vertebrae (T1 and T2) that has occurred previously and is now being addressed in a follow-up visit. The vertebrae are misaligned but still maintain some contact, causing potential pain, nerve impingement, or restricted movement in the upper back and neck region.

This code is appropriate for encounters where a patient is receiving ongoing treatment, follow-up care, or rehabilitation for a previously diagnosed subluxation of the T1/T2 vertebrae. This includes visits for physical therapy, chiropractic adjustments, medication management, or re-evaluation of symptoms after the initial injury.

• Ensure documentation clearly specifies "subsequent encounter" for the subluxation.
• Verify the specific vertebral levels (T1/T2) are documented to avoid coding a general thoracic subluxation.
• Distinguish from initial encounters (A) or sequela (S) encounters, as the 7th character D is specific to subsequent care.