ICD‑10 Code A1831 – Tuberculous peritonitis Tuberculous peritonitis
Clinical context, related codes, and quick guidance
Billable
Active (Valid as of April 2025) · ICD-10-CM (US)
Code Details
| Code | A1831 |
|---|---|
| Category | A183 – Tuberculosis of intestines, peritoneum and mesenteric glands Tuberculosis of intestines, peritoneum and mesenteric glands |
| Version | ICD-10-CM (US) |
| Status | Active (Valid as of April 2025) |
Plain‑English Summary
ICD-10-CM code A18.31 identifies tuberculous peritonitis, an infection of the peritoneal lining caused by Mycobacterium tuberculosis. This condition is characterized by abdominal symptoms, ascites, and systemic signs such as fever and weight loss.
When to Use This Code
- Tuberculous ascites
Related Codes
Browse category »FAQ
A18.31 is the ICD-10-CM diagnosis code for tuberculous peritonitis, a serious infection of the peritoneum (the lining of the abdominal cavity) caused by tuberculosis bacteria. It often presents with abdominal pain, swelling, and fluid buildup.
Yes, A18.31 is a billable/specific ICD-10-CM code, meaning it can be used for reimbursement purposes to indicate a diagnosis of tuberculous peritonitis.
The code A18.31 is specifically for tuberculous peritonitis and is also applicable to tuberculous ascites. Other forms of peritonitis, such as those due to other infectious agents or non-infectious causes, are coded differently.
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A18.31
tuberculous peritonitis
tuberculosis peritonitis
tb peritonitis
tuberculous ascites
abdominal tuberculosis
peritoneal tuberculosis
ICD-10-CM A18.31
ICD10 code for tuberculous peritonitis
ICD10 code for tuberculous ascites
peritonitis
mycobacterium tuberculosis abdomen