ICD-10-CM > C00-D49 > C7B-C7B > C7B C7B Secondary neuroendocrine tumors Non-Billable/Non-Specific Use Additional code to identify any functional activity Codes C7B.0Secondary carcinoid tumorsC7B.00Secondary carcinoid tumors, unspecified siteC7B.01Secondary carcinoid tumors of distant lymph nodesC7B.02Secondary carcinoid tumors of liverC7B.03Secondary carcinoid tumors of boneC7B.04Secondary carcinoid tumors of peritoneumC7B.09Secondary carcinoid tumors of other sitesC7B.1Secondary Merkel cell carcinomaC7B.8Other secondary neuroendocrine tumors