R18.8: Other ascites
R18.8 is the billable ICD-10-CM diagnosis code for Other ascites. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code R18.8?
R18.8 is the ICD-10-CM diagnosis code for Other ascites. It belongs to category R18 (Ascites).
Is R18.8 a billable code?
Yes. R18.8 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does R18.8 belong to?
R18.8 is part of ICD-10-CM category R18 — Ascites, which has 4 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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