Subluxation complex (vertebral) of head region

This code represents a misalignment or partial dislocation of the vertebrae in the head region, specifically the atlanto-occipital and atlanto-axial joints. It describes a functional lesion involving altered joint mechanics, neurological integrity, and/or soft tissue changes.

Use this code when documentation indicates a subluxation complex affecting the cervical spine at the C0-C1 or C1-C2 levels, often identified through chiropractic or osteopathic manipulative treatment (OMT) examinations. It is appropriate for conditions like cervicogenic headaches or neck pain attributed to these specific vertebral misalignments.

• Ensure documentation clearly specifies the "head region" (C0-C1, C1-C2) for subluxation.
• This code is often used as a primary diagnosis for chiropractic or osteopathic services.
• Do not confuse with general neck pain (M54.2) unless subluxation is explicitly documented.