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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Disorders Of Thyroid Gland 240-246 > ICD-9-CM Diagnosis 240 Simple and unspecified goiter 240 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 240.0 Goiter specified as simple Enlargement of the thyroid gland in a significantly large fraction of a population group, generally considered to be due to insufficient iodine in the diet. 240.0 is a specific code that can be used to specify a diagnosis 240.0 contains 1 index entry ICD-9-CM Diagnosis 240.9 Goiter unspecified An enlarged thyroid. It may be caused by too little iodine in the diet or by other conditions. Most goiters are not cancer. Enlargement of the THYROID GLAND that may increase from about 20 grams to hundreds of grams in human adults. Goiter is observed in individuals with normal thyroid function (euthyroidism), thyroid deficiency (HYPOTHYROIDISM), or hormone overproduction (HYPERTHYROIDISM). Goiter may be congenital or acquired, sporadic or endemic (GOITER, ENDEMIC). 240.9 is a specific code that can be used to specify a diagnosis 240.9 contains 11 index entries