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ICD-10-CM Codes
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R00-R99
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R10-R19
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R18-
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2023 ICD-10-CM Diagnosis Code R18
2023 ICD-10-CM Diagnosis Code R18
Ascites
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
- R18 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2023 edition of ICD-10-CM R18 became effective on October 1, 2022.
- This is the American ICD-10-CM version of R18 - other international versions of ICD-10 R18 may differ.
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as R18. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- ascites in alcoholic cirrhosis (
ICD-10-CM Diagnosis Code K70.31
Alcoholic cirrhosis of liver with ascites
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Adult Dx (15-124 years)
K70.31) - ascites in alcoholic hepatitis (
ICD-10-CM Diagnosis Code K70.11
Alcoholic hepatitis with ascites
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Adult Dx (15-124 years)
K70.11) - ascites in toxic liver disease with chronic active hepatitis (
ICD-10-CM Diagnosis Code K71.51
Toxic liver disease with chronic active hepatitis with ascites
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
K71.51)
IncludesIncludes Help
"Includes" further defines, or give examples of, the content of the code or category.
- fluid in peritoneal cavity
The following code(s) above
R18 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
R18:
Clinical Information
- (ah-sye-teez) abnormal buildup of fluid in the abdomen.
- A disorder characterized by accumulation of serous or hemorrhagic fluid in the peritoneal cavity.
- Abnormal buildup of fluid in the abdomen that may cause swelling. In late-stage cancer, tumor cells may be found in the fluid in the abdomen. Ascites also occurs in patients with liver disease.
- Accumulation of fluid in the peritoneal cavity. The fluid may be serous, hemorrhagic, or the result of tumor metastasis to the peritoneum.
- Accumulation or retention of free fluid within the peritoneal cavity.
- An abnormal accumulation of serous fluid in the abdominal cavity
- Effusion and accumulation of serous fluid in the abdominal cavity.
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
Code annotations containing back-references to R18:
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Type 1 Excludes: R60, R19.0
ICD-10-CM Diagnosis Code R60
Edema, not elsewhere classified
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
ICD-10-CM Diagnosis Code R19.0
Intra-abdominal and pelvic swelling, mass and lump
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 1 Excludes- abdominal distension (gaseous) (R14.-)
- ascites (R18.-)
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Type 2 Excludes: K66
ICD-10-CM Diagnosis Code K66
Other disorders of peritoneum
2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
Type 2 Excludes- ascites (R18.-)
- peritoneal effusion (chronic) (R18.8)
ICD-10-CM Codes Adjacent To R18
R15.0 Incomplete defecation
R15.9 Full incontinence of feces
R16 Hepatomegaly and splenomegaly, not elsewhere classified
R16.0 Hepatomegaly, not elsewhere classified
R16.1 Splenomegaly, not elsewhere classified
R16.2 Hepatomegaly with splenomegaly, not elsewhere classified
R18
Ascites
R19 Other symptoms and signs involving the digestive system and abdomen
R19.0 Intra-abdominal and pelvic swelling, mass and lump
R19.01 Right upper quadrant abdominal swelling, mass and lump
R19.02 Left upper quadrant abdominal swelling, mass and lump
R19.03 Right lower quadrant abdominal swelling, mass and lump
R19.04 Left lower quadrant abdominal swelling, mass and lump
R19.05 Periumbilic swelling, mass or lump
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.