A18.31
Billable codeTuberculous peritonitis
The ICD-10 code for tuberculous peritonitis is A18.31.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Tuberculous ascites
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- A18.32Tuberculous enteritis
- A18.39Retroperitoneal tuberculosis
- A18.31Tuberculous peritonitis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 01400Approximate match
- 01401Approximate match
- 01402Approximate match
- 01403Approximate match
- 01404Approximate match
- 01405Approximate match
- 01406Approximate match
Associated MS-DRGs
A18.31 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 314Other Circulatory System Diagnoses with MCC
- DRG 315Other Circulatory System Diagnoses with CC
- DRG 316Other Circulatory System Diagnoses without CC/MCC
- DRG 371Major Gastrointestinal Disorders and Peritoneal Infections with MCC
- DRG 372Major Gastrointestinal Disorders and Peritoneal Infections with CC
- DRG 373Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC