A18.31 ICD-10-CM Code: Tuberculous peritonitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
A18.31Tuberculous peritonitis
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where A18.31 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Tuberculosis (A15-A19)
- 3
Category A18
Tuberculosis of other organs
- 4
Subcategory A18.3
Tuberculosis of intestines, peritoneum and mesenteric glands
- 5
Code A18.31
Tuberculous peritonitis
Documentation details
Notes for this code
Inclusion terms
- Tuberculous ascites
Code first
No “code first” instruction is listed for A18.31.
Use additional code
No “use additional code” instruction is listed for A18.31.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A18.31.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A18.31.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code A18.31 mean?
A18.31 is the FY 2027 U.S. ICD-10-CM code for “Tuberculous peritonitis.”
Is A18.31 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, A18.31 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is A18.31 located in ICD-10-CM?
A18.31 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Tuberculosis (A15-A19) (A15–A19), under category A18, Tuberculosis of other organs and subcategory A18.3, Tuberculosis of intestines, peritoneum and mesenteric glands.
What coding notes are listed for A18.31?
Its listed inclusion terms are Tuberculous ascites. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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