A18.31
A18.31: Tuberculous peritonitis
Billable / specific codeICD-10-CM
A18.31 is a billable, specific ICD-10-CM code for tuberculous peritonitis. It is valid for submission on a claim.
Check A18.31 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Tuberculous ascites
Other codes that can never be billed with A18.31
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
A18.31 is named in 14 Medicare coverage policies: 14 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
- A56416Billing and Coding: Assays for Vitamins and Metabolic Function
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
Alphabetic index entries that lead here
- Ascites›tuberculous
- Peritonitis›fibrocaseous(tuberculous)
- Peritonitis›tuberculous
- Tuberculosis, tubercular, tuberculous›ascites
- Tuberculosis, tubercular, tuberculous›omentum
- Tuberculosis, tubercular, tuberculous›peritoneum NEC
- Tuberculosis, tubercular, tuberculous›peritonitis
- Abscess›peritoneum, peritoneal›tuberculous
- Tuberculosis, tubercular, tuberculous›abscess›subdiaphragmatic
Code history
Unchanged in every release from FY2024 to FY2027.