Unspecified injury of abdominal aorta, sequela

This code signifies a long-term or late effect resulting from an unspecified injury to the abdominal aorta. It indicates that the initial traumatic event has resolved, but the patient continues to experience a residual condition directly attributable to that past injury. The specific nature of the original aortic injury is not documented or is unknown.

This code is appropriate when a patient presents with a sequela (e.g., chronic pain, aneurysm, dissection, or stenosis) of a previously sustained, but unspecified, injury to the abdominal aorta. It should be used when the acute phase of the original injury has passed, and the current encounter addresses the lasting consequences.

• Always assign a sequela code (S35.00XS) as a secondary diagnosis, with the primary diagnosis describing the specific sequela (e.g., I71.4 for abdominal aortic aneurysm).
• Ensure documentation clearly links the current condition to a past abdominal aortic injury, even if the exact nature of the original injury is not specified.
• Avoid using this code for acute injuries; instead, use the appropriate acute injury code from the S35 category.