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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 > Thyrotoxicosis With Or Without Goiter 242.* > 2008 ICD-9-CM Diagnosis 242.91 Thyrotoxicosis without goiter or other cause with thyrotoxic crisis or storm  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 242.91 can be accessed here. 242.91 is a specific code that can be used to specify a diagnosis View the ICD-9-CM Volume 1 242.* hierarchy