Comp of mesent art following a procedure, NEC, sequela

This code signifies a long-term or late-effect complication affecting the mesenteric artery that arose from a previous medical or surgical procedure. These complications are not acute and manifest after the initial healing period, impacting blood supply to the intestines. Examples include chronic ischemia, strictures, or pseudoaneurysms that develop months or years post-procedure.

Use this code when documenting a patient presenting with a current condition of the mesenteric artery that is a direct consequence of a past surgical or interventional procedure, and the complication is no longer in its acute phase. This applies to conditions like chronic mesenteric ischemia secondary to a prior abdominal surgery or catheterization. It is appropriate when the sequela is the primary reason for the current encounter.

• Always assign this code as a secondary diagnosis, with the specific mesenteric artery complication (e.g., I77.4 for celiac artery stenosis) as the primary diagnosis.
• Ensure documentation clearly links the current mesenteric artery issue to a previous procedure and indicates its chronic or late-effect nature.
• Do not use for acute post-procedural complications; those would fall under the acute T81.xx codes.