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R18.0 - Malignant ascites


The ICD 10 Code for Malignant ascites is listed as R18.0.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: R18.0
Description: Malignant ascites
  • Code first malignancy, such as:
  • malignant neoplasm of ovary (C56.-)
  • secondary malignant neoplasm of retroperitoneum and peritoneum (C78.6)
Diagnostic Related Groups
(MS-DRG v30.0)
947 - Signs & Symptoms W Mcc
948 - Signs & Symptoms W/o Mcc
Chapter Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block Symptoms and signs involving the digestive system and abdomen (R10-R19)
Parent R18 - Ascites
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 789.51 - Malignant ascites
ICD-10-CM Siblings (same level / similar specificity) of R18.0:
R18.8 - Other ascites