2012 ICD-9-CM Diagnosis Code 209.60
Benign carcinoid tumor of unknown primary site
- (KAR-sin-oyd) A type of tumor usually found in the gastrointestinal system (most often in the appendix), and sometimes in the lungs or other sites. Carcinoid tumors are usually benign.
- Carcinoid tumor, also known as well differentiated endocrine neoplasm, is a slow growing neuroendocrine tumor, composed of uniform, round, or polygonal cells having monotonous, centrally located nuclei and small nucleoli, infrequent mitoses, and no necrosis. The tumor may show a variety of patterns, such as solid, trabecular, and acinar. Electron microscopy shows small secretory granules. Immunohistochemical studies reveal NSE, as well as chromogranin immunoreactivity. Malignant histology (cellular pleomorphism, hyperchromatic nuclei, prominent nucleoli, necrosis, and mitoses) can occasionally be seen. Such cases may have an aggressive clinical course. Gastrointestinal tract and lung are common sites of involvement.
- A tumor derived from cells that release a hormone in response to a signal from the nervous system. Some examples of neuroendocrine tumors are carcinoid tumors, islet cell tumors, medullary thyroid carcinoma, and pheochromocytoma. These tumors secrete hormones in excess, causing a variety of symptoms.
- Short description: Ben crcnd prim site unkn.
- ICD-9-CM 209.60 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
- You are viewing the 2012 version of ICD-9-CM 209.60.
- More recent version(s) of ICD-9-CM 209.60: 2013.
Applies To
Convert 209.60 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 209.60:
carcinoid (M8240/1) 
transverse colon 
