ICD-10-CM>C00-D49>C15-C26>C26C26Malignant neoplasm of other and ill-defined digestive organsNon-Billable/Non-SpecificType 1 Excludesmalignant neoplasm of peritoneum and retroperitoneum (C48.-)CodesC26.0Malignant neoplasm of intestinal tract, part unspecifiedC26.1Malignant neoplasm of spleenC26.9Malignant neoplasm of ill-defined sites within the digestive system