Is A18.31 a billable code?
Yes. A18.31 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
A18.31: Tuberculous peritonitis
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
A18.31 is a billable ICD-10-CM diagnosis code for tuberculous peritonitis. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with A18.31 already added.Good Faith EstimateStart a cost estimate with A18.31 already added.CMS-1500 Claim FormFill a claim form with A18.31 in box 21.
Other codes in A18.3 Tuberculosis of intestines, peritoneum and mesenteric glands
A18.31 questions
What does A18.31 mean?
A18.31 is the ICD-10-CM code for Tuberculous peritonitis. It is in chapter 1, Certain infectious and parasitic diseases (A00-B99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.