Other specified injury of thoracic aorta, sequela

This code signifies a long-term complication or late effect resulting from a previously sustained, specific injury to the thoracic aorta that is not otherwise classified. It indicates that the initial acute injury has resolved, but its lasting consequences are now being addressed. These sequelae can include chronic dissection, pseudoaneurysm, or other structural changes.

Use this code when documenting the treatment or management of a chronic condition directly attributable to a past, specified injury of the thoracic aorta. This applies when the patient is no longer in the acute phase of the original injury, but is presenting for care related to its residual effects. Examples include follow-up for a stable post-traumatic aortic pseudoaneurysm or chronic aortic dissection.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., I71.2 for thoracic aortic aneurysm, ruptured).
• Ensure documentation clearly links the current condition to a past thoracic aortic injury.
• Verify that the original injury was "other specified" and not a laceration, puncture, or contusion, which have their own sequela codes.