R18.8
BillableOther ascites
Other ascites
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Ascites NOS
- Peritoneal effusion (chronic)
Includes
Conditions included under this code
- fluid in peritoneal cavity
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •abnormal findings on antenatal screening of motherO28
- •certain conditions originating in the perinatal periodP04-P96
- signs and symptoms classified in the body system chapters
- •signs and symptoms of breast,N63, N64.5
- •congenital or infantile pylorospasmQ40.0
- •gastrointestinal hemorrhageK92.0-K92.2
- •intestinal obstructionK56
- •newborn gastrointestinal hemorrhageP54.0-P54.3
- •newborn intestinal obstructionP76
- •pylorospasmK31.3
- •signs and symptoms involving the urinary systemR30-R39
- •symptoms referable to female genital organsN94
- •symptoms referable to male genital organsN48-N50
Related Codes(1)
Also Known As / Clinical Terms(100)
SNOMED CT
- Dialysis-associated ascites12963004
- Bile ascites18037001
- Urine ascites26170003
- Uroabdomen26170003
- Pancreatic ascites53067009
- Demons-Meigs syndrome63402005
- Meigs syndrome63402005
- Meigs' syndrome63402005
- Meigs-Cass syndrome63402005
- Ovarian-ascites-pleural effusion syndrome63402005
- Haemorrhagic ascites71603004
- Hemorrhagic ascites71603004
- Urine ascites of the neonate75205009
- Chronic peritoneal effusion78609007
- Fluid-filled abdomen93457003
- Fluid-filled abdominal cavity93457003
- Bloody peritoneal effusion95554005
- Leakage of bile235931005
- Ascites co-occurrent and due to hepatic disorder236004002
- Hepatic ascites236004002
- Hypoalbuminaemic ascites236006000
- Hypoalbuminemic ascites236006000
- Metabolic ascites236006000
- Fluid in peritoneal cavity271861000
- Infected ascites307311001
- Ascites389026000
- Hydroperitoneum389026000
- Hydroperitonia389026000
- Hydrops abdominis389026000
- Haemorrhage into peritoneal cavity443826006
- Hemorrhage into peritoneal cavity443826006
- Intraabdominal haemorrhage443826006
- Intraabdominal hemorrhage443826006
- Intraperitoneal haemorrhage443826006
- Intraperitoneal hemorrhage443826006
- Tense ascites470757009
- Refractory ascites470758004
UMLS
- Accumulation of fluid in the abdomenC0003962
- AscitesC0003962
- Ascites (disorder)C0003962
- Ascites NOSC0003962
- HydroperitoneumC0003962
- HydroperitoniaC0003962
- Hydrops abdominisC0003962
- abdominal dropsyC0003962
- ascitesC0003962
- hydroperitoneumC0003962
- hydroperitoniaC0003962
- hydrops abdominisC0003962
- peritoneal dropsyC0003962
- peritoneal exudateC0003962
- Chronic Peritoneal EffusionC0031144
- Chronic peritoneal effusionC0031144
- Chronic peritoneal effusion (disorder)C0031144
- Peritoneal effusion (chronic)C0031144
- Other ascitesC1955521
Clinical Terms
- Chronic peritoneal effusion
- Bloody peritoneal effusion
- Meigs' syndrome
- Uroabdomen
- Fluid in peritoneal cavity
- Hydroperitonia
- Meigs-Cass syndrome
- Pancreatic ascites
- Accumulation of fluid in the abdomen
- Peritoneal effusion (chronic)
- Hemorrhagic ascites
- Ascites co-occurrent and due to hepatic disorder
- Intraperitoneal haemorrhage
- Ascites NOS
- hydrops abdominis
- Ovarian-ascites-pleural effusion syndrome
- Fluid-filled abdomen
- Hepatic ascites
- Hemorrhage into peritoneal cavity
- Chronic peritoneal effusion (disorder)
- Urine ascites of the neonate
- Meigs syndrome
- Bile ascites
- Dialysis-associated ascites
- Hypoalbuminemic ascites
- Intraperitoneal hemorrhage
- abdominal dropsy
- Fluid-filled abdominal cavity
- Metabolic ascites
- Infected ascites
- Hydroperitoneum
- peritoneal dropsy
- Leakage of bile
- Intraabdominal haemorrhage
- Haemorrhagic ascites
- Tense ascites
- Intraabdominal hemorrhage
- peritoneal exudate
- Haemorrhage into peritoneal cavity
- Ascites (disorder)
- Hypoalbuminaemic ascites
- Refractory ascites
- Urine ascites
- Demons-Meigs syndrome
Frequently Asked Questions
What is the ICD-10 code for other ascites?
The ICD-10-CM code for other ascites is R18.8. The full clinical description is "Other ascites". R18.8 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code R18.8 mean?
ICD-10-CM code R18.8 represents “Other ascites”. It is classified under Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings and is a billable/specific code that can be used on a claim.
Is R18.8 a billable code?
Yes, R18.8 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is R18.8 in?
R18.8 is in Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (codes R00-R99).
What codes cannot be used with R18.8?
R18.8 has Excludes1 notes indicating codes that cannot be used together with it, including: ascites in alcoholic cirrhosis (K70.31); ascites in alcoholic hepatitis (K70.11); ascites in toxic liver disease with chronic active hepatitis (K71.51).
What SNOMED CT codes does R18.8 map to?
R18.8 maps to 19 SNOMED CT concepts: 389026000, 236004002, 18037001, 95554005, 78609007, and 14 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for R18.8?
R18.8 is linked to 3 UMLS Concept Unique Identifiers: C0003962, C0031144, C1955521. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does R18.8 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other ascites affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of R18.8?
There is no direct ICD-11 mapping available for R18.8 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.