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ICD-10-CM Code R18.8
Other ascites

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

R18.8 is a billable ICD code used to specify a diagnosis of other ascites. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code R18 is used to code Ascites

Ascites (/əˈsaɪtiːz/ ə-SY-teez, from Greek askites, "baglike") is a gastroenterological term for an accumulation of fluid in the peritoneal cavity. The medical condition is also known as peritoneal cavity fluid, peritoneal fluid excess, hydroperitoneum or more archaically as abdominal dropsy. Although most commonly due to cirrhosis, severe liver disease or metastatic cancer, its presence can be a sign of other significant medical problems, such as Budd–Chiari syndrome. Diagnosis of the cause is usually with blood tests, an ultrasound scan of the abdomen, and direct removal of the fluid by needle or paracentesis (which may also be therapeutic). Treatment may be with medication (diuretics), paracentesis, or other treatments directed at the cause.

Specialty: Gastroenterology
MeSH Code: D001201
ICD 9 Code: 789.5

The abdomen of a person with cirrhosis showing massive ascites and prominent superficial veins

Source: Wikipedia

Coding Notes for R18.8 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Ascites NOS
Peritoneal effusion (chronic)

MS-DRG Mapping

  • DRG Group #947-948 - Signs and symptoms with MCC.
  • DRG Group #947-948 - Signs and symptoms without MCC.

ICD-10-CM Alphabetical Index References for 'R18.8 - Other ascites'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code R18.8. Click on any term below to browse the alphabetical index.

Hydroperitoneum (R18.8)
Ascites(abdominal) (R18.8)


Peritoneal effusion (chronic) (approximate match)
Other ascites (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 789.59 was previously used, R18.8 is the appropriate modern ICD10 code.

Parent Code: R18 - Ascites

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/R188