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.
The majority of thyroid follicular epithelial cellâderived. malignant neoplasms are diï¬erentiated cancers. Thyroid follicular epithelial. cells give rise, however, to less diï¬erentiated thyroid carcinomas, including. anaplastic carcinoma and poorly diï¬erentiated thyroid carcinomas.