AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2026 Issue 2; Ask the Editor
Crohn’s Disease with Serositis
A patient was admitted for a laparoscopic ileocecal resection with anastomosis due to terminal ileal Crohn’s disease. The pathology findings revealed chronic active enteritis with patchy transmural inflammation, ulcers, acute and organizing serositis, and focal fibromuscular thickening of the submucosa, consistent with Crohn’s disease. The physician was queried and agreed with the findings. What is the correct code assignment for the serositis?
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