ICD-10-CM C48: Malignant neoplasm of retroperitoneum and peritoneum

ICD-10-CM Diagnosis Code (2025)

Official Description for C48

Malignant neoplasm of retroperitoneum and peritoneum

Coding Notes & Guidelines for C48

Excludes1: Not Coded Here
  • Kaposi's sarcoma of connective tissue (C46.1)
  • mesothelioma (C45.-)
Inclusion Terms
  • Malignant neoplasm of cul-de-sac
  • Malignant neoplasm of mesentery
  • Malignant neoplasm of mesocolon
  • Malignant neoplasm of omentum
  • Malignant neoplasm of parietal peritoneum
  • Malignant neoplasm of pelvic peritoneum

Child Codes (More Specific Codes for C48):

C48.0 - Malignant neoplasm of retroperitoneum C48.1 - Malignant neoplasm of specified parts of peritoneum C48.2 - Malignant neoplasm of peritoneum, unspecified C48.8 - Malignant neoplasm of overlapping sites of retroperitoneum and peritoneum

About ICD-10-CM Code C48 (Malignant neoplasm of retroperitoneum and peritoneum)

ICD-10-CM code C48 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C48 became effective on October 1, 2024.

This page provides detailed information about C48 - Malignant neoplasm of retroperitoneum and peritoneum. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Malignant neoplasm of retroperitoneum and peritoneum.