R18
R18: Ascites
Non-billable headerICD-10-CM
R18 is a non-billable header ICD-10-CM code for ascites. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Includes
Conditions this code covers.
- fluid in peritoneal cavity
Other codes that can never be billed with R18
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.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead R18
2 child codes. Green means billable.