D13.9Benign neoplasm of ill-defined sites within the digestive system

D13.9 is the ICD-10-CM diagnosis code for benign neoplasm of ill-defined sites within the digestive system. It belongs to category D13 (benign neoplasm of other and ill-defined parts of digestive system), block D10-D36 (benign neoplasms, except benign neuroendocrine tumors) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within D13 (benign neoplasm of other and ill-defined parts of digestive system), D13.9 is specifically for benign neoplasm of ill-defined sites within the digestive system. Related codes cover esophagus (D13.0), stomach (D13.1), duodenum (D13.2), other and unspecified parts of small intestine (D13.3), liver (D13.4), extrahepatic bile ducts (D13.5), pancreas (D13.6) and endocrine pancreas (D13.7).

To report this condition, pick the subcode that matches the documentation: D13.91 (polyposis) and D13.99 (system).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2024 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 211.9 (benign neoplasm of other and unspecified site in the digestive system).