Displaced posterior arch fx first cervcal vertebra, sequela

This code signifies the long-term effects or complications arising from a previously sustained displaced fracture of the posterior arch of the atlas (C1 vertebra). It indicates that the patient is currently experiencing residual problems directly attributable to this specific past injury, rather than the acute fracture itself.

This code is appropriate when a patient presents with ongoing symptoms or conditions (e.g., chronic pain, neurological deficits, instability) that are a direct consequence of a healed or resolving displaced posterior arch fracture of C1. Documentation should clearly link the current condition to the old fracture and specify that the fracture itself is no longer acute.

• Always use in conjunction with a code describing the specific sequela (e.g., chronic pain, nerve compression).
• Ensure documentation explicitly states "sequela," "late effect," or similar terminology, and that the fracture is no longer acute.
• Distinguish carefully from acute or subsequent encounter codes for the same fracture type; this code is for the aftermath.