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ICD-10-CM Code for Malignant ascites R18.0

ICD-10 code R18.0 for Malignant ascites is a medical classification as listed by WHO under the range - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified .

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Official Long Descriptor

Malignant ascites
Code first malignancy, such as:
malignant neoplasm of ovary (C56.-)
secondary malignant neoplasm of retroperitoneum and peritoneum (C78.6)

R18

Includes: fluid in peritoneal cavity

Excludes1: ascites in alcoholic cirrhosis (K70.31)
ascites in alcoholic hepatitis (K70.11)
ascites in toxic liver disease with chronic active hepatitis (K71.51)

Additional/Related Information

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Get crucial instructions for accurate ICD-10-CM R18.0 coding with all applicable Excludes 1 and Excludes 2 notes from the section level conveniently shown with each code.
This section shows you chapter-specific coding guidelines to increase your understanding and correct usage of the target ICD-10-CM Volume 1 code.

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Malignant ascites with primary cancer of Liver
That's correct, per the 'code first' note under R18.0, the ascites code should be always listed second after the code for the malignancy itself.... [ Read More ]
Malignant ascites with primary cancer of Liver
Hello Everyone...!!! Patient with PMH of Primary Liver cancer under Chemo admitted for paracentesis. No Cytopathology report is available. Only Physician documentation of Malignant ascites can be con... [ Read More ]
Help with procedure
**I also posted this in the general surgery section** I have a patient who underwent a cysto/turbt earlier in the day. Later in the day doctor went back and did exploratory lapar... [ Read More ]
intraperitoneal saline fluid from previous procedure that day
I have a patient who underwent a cysto/turbt earlier in the day. Later in the day doctor went back and did exploratory laparotomy, cystorrhaphy, and evacuation of 2.3 liters if saline with evaluation ... [ Read More ]
R18.0 Ascites
R18. Malignant Ascites shows that it should not be used as a principle diagnosis if a related definitive diagnosis has been established. What if there is no related definitive diagnosis such as malign... [ Read More ]
Diagnosis Coding
you would not use the C78.2 at all for the diagnosis for Malignant metastatic pleural fluid. as I said since the primary site is unknown at this time you will have to C80.1 as you primary neoplasm s... [ Read More ]
pregnancy ultrasounds
I would like some guidance on this scenario. Pregnant woman comes in for ultrasound. On the order it has O26.841 (uterine size date discrepancy). Usually nothing is found abnormal and the final impr... [ Read More ]
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