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3. Chapter - R00-R99
4. Section - R10-R19
5. Category - R18
6. R18.0

R18.0 - Malignant ascites

• Applicable to Malignant ascites
• The 2025 edition of ICD10-CM R18.0 became effective on October 1, 2024.
• This is the American ICD10-CM version of R18.0 - other international versions of ICD10 R18.0 may differ.
• R18.0 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

codefirst

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

The following codes above R18.0 contain annotation back-references that may be applicable to R18.0:

• Chapter: R00-R99 - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
• Section: R10-R19 - Symptoms and signs involving the digestive system and abdomen
• Category: R18 - Ascites

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.