A18.31

Billable

Tuberculous peritonitis

A18.31 is the ICD-10-CM code for Tuberculous peritonitis. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
A00-B99
Parent
A18.3
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue. Disorders of the peritoneum are not common. They include: Peritonitis - an inflammation of the peritoneum Cancer Complications from peritoneal dialysis Your doctor may use imaging tests or lab tests to analyze the peritoneal fluid to diagnose…

Read more about Peritoneal Disorders at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • Tuberculous ascites

Frequently asked questions

What is ICD-10 code A18.31?
A18.31 is the ICD-10-CM code for "Tuberculous peritonitis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A18.31 a billable code?
Yes — A18.31 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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