D3A.0 - Benign carcinoid tumors
D3A.01 - Benign carcinoid tumors of the small intestine
D3A.010 - Benign carcinoid tumor of the duodenum
D3A.011 - Benign carcinoid tumor of the jejunum
D3A.012 - Benign carcinoid tumor of the ileum
D3A.019 - Benign carcinoid tumor of the small intestine, unspecified portion