ICD-10 Code A18.32 – Tuberculous Enteritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A18.32 – Tuberculous enteritis
What it is
Tuberculous enteritis is intestinal infection caused by Mycobacterium tuberculosis. It usually reflects gastrointestinal involvement of tuberculosis, most often affecting the ileocecal area.
Clinical signs
Clinical features vary; refer to documentation. Common findings include abdominal pain, weight loss, altered bowel habits, fever, and sometimes bowel obstruction or abdominal mass.
When to use this code
Use A18.32 when the record clearly documents tuberculosis involving the intestines or enteritis due to TB. You may also use it when the provider identifies intestinal TB as the confirmed diagnosis, even if other TB sites are present.
Do not code it for nonspecific gastroenteritis, inflammatory bowel disease, or abdominal symptoms without documented tuberculous involvement. Check documentation for the exact site and confirmed etiology.
Do not use for
Do not use this code for pulmonary tuberculosis alone or for intestinal symptoms without a TB diagnosis. If the record only says “possible TB,” check documentation.
Coding tip
Verify that the provider links the intestinal condition to tuberculosis before assigning A18.32.