Unstable burst fracture of first cervical vertebra, sequela

This code signifies a chronic or late effect of an unstable burst fracture affecting the C1 vertebra (atlas). An unstable burst fracture involves comminution of the vertebral body with potential for spinal cord compromise. "Sequela" indicates that this code is used for conditions that are residual effects of the initial injury, occurring after the acute phase has passed.

Apply this code when documenting long-term complications, chronic pain, neurological deficits, or other persistent issues directly resulting from a previously sustained unstable burst fracture of the C1 vertebra. Documentation should clearly state the connection between the current condition and the old C1 fracture, and specify that the fracture was unstable and a burst type. This code is appropriate when the patient is no longer in the acute treatment phase for the fracture itself.

• Always sequence the sequela code first, followed by codes for any specific residual conditions (e.g., chronic pain, neurological deficits).
• Ensure documentation explicitly states "sequela" or "late effect" and links the current condition to the prior C1 unstable burst fracture.
• Do not use this code for initial encounters or active treatment of the acute fracture; use acute fracture codes for those scenarios.