• congenital or infantile pylorospasm (Q40.0)
  • gastrointestinal hemorrhage (K92.0-K92.2)
  • intestinal obstruction (K56.-)
  • newborn gastrointestinal hemorrhage (P54.0-P54.3)
  • newborn intestinal obstruction (P76.-)
  • pylorospasm (K31.3)
  • signs and symptoms involving the urinary system (R30-R39)
  • symptoms referable to female genital organs (N94.-)
  • symptoms referable to male genital organs (N48-N50)
  1. R18 Ascites


    • fluid in peritoneal cavity


    • ascites in alcoholic cirrhosis (K70.31)
    • ascites in alcoholic hepatitis (K70.11)
    • ascites in toxic liver disease with chronic active hepatitis (K71.51)
    1. R18.0 Malignant ascites

    2. R18.8 Other ascites

      Inclusion term(s):

      • Ascites NOS
      • Peritoneal effusion (chronic)
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.