ICD-10 Code K63.821 – Small intestinal bacterial overgrowth (2026): Diagnosis, Symptoms & Billing Guide
The ICD-10 code for Small intestinal bacterial overgrowth is K63.821.2026 ICD-10-CM Diagnosis Code K63.821 – Small intestinal bacterial overgrowth Related ICD-10 Codes Parent code: K63 – Other diseases of intestine Other codes in same category: K63.0 – Abscess of intestine, K63.1 – Perforation of intestine (nontraumatic), K63.2 – Fistula of intestine, K63.3 – Ulcer of…