Causes of a goiter include an imbalance in the thyroid gland and Goiter symptoms generally occur in a gland that is overactive, producing too much hormone (hyperthyroidism), or that is underactive, producing too little hormone (hypothyroidism).
ICD-9 170.3 is malignant neoplasm of ribs, sternum, and clavicle (1703). This code is grouped under diagnosis codes for neoplasms.
A neoplasm can be benign, potentially malignant (pre-cancer), or malignant (cancer). 1  Benign tumors include uterine fibroids and melanocytic nevi (skin moles). 2  They are circumscribed and localized and do not transform into cancer.3  Potentially-malignant neoplasms include carcinoma in situ. Secondary neoplasm refers to any of a class of cancerous tumor that is either a metastatic offshoot of a primary tumor, or an apparently unrelated tumor that increases in frequency following certain cancer treatments such as chemotherapy or radiotherapy.