Dislocation of C0/C1 cervical vertebrae, sequela

This code describes a long-term complication or residual effect stemming from a prior dislocation of the atlanto-occipital joint (C0/C1). This could include chronic pain, neurological deficits, or instability that persists after the initial injury has healed. The "S" at the end indicates that this is a sequela code, meaning it's used for conditions that are the late effects of an injury.

Use this code when documenting a patient presenting with a current condition directly attributable to a C0/C1 dislocation that occurred in the past. This applies when the acute phase of the original injury has passed, and the patient is now experiencing chronic or residual symptoms. Documentation should clearly link the current symptoms to the previous dislocation and indicate that the condition is a late effect.

• Always sequence the sequela code first, followed by any codes for the specific manifestation of the sequela (e.g., chronic pain, neurological deficit).
• Ensure the medical record explicitly states that the current condition is a "late effect," "sequela," or "due to prior injury" of the C0/C1 dislocation.
• Do not use this code for acute or initial dislocations; those are coded with the appropriate acute injury codes.