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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Nutritional Deficiencies 260-269 > Deficiency Of B-Complex Components 266.* > 2007 ICD-9-CM Diagnosis 266.1 Vitamin b6 deficiency This code may be outdated. View the most recent version of ICD-9-CM 266.1 A nutritional condition produced by a deficiency of VITAMIN B 6 in the diet, characterized by dermatitis, glossitis, cheilosis, and stomatitis. Marked deficiency causes irritability, weakness, depression, dizziness, peripheral neuropathy, and seizures. In infants and children typical manifestations are diarrhea, anemia, and seizures. Deficiency can be caused by certain medications, such as isoniazid. Deficiency of PYRIDOXINE, one of the VITAMIN B 6 compounds. Although pyridoxine and Vitamin B 6 are still frequently used as synonyms, especially by medical researchers, this practice is erroneous and sometimes misleading (EE Snell; Ann NY Acad Sci, vol 585 pg 1, 1990). 266.1 is a specific code that can be used to specify a diagnosis 266.1 contains 8 index entries View the ICD-9-CM Volume 1 266.* hierarchy 266.1 also known as: Deficiency: pyridoxal pyridoxamine pyridoxine Vitamin B6 deficiency syndrome 266.1 excludes: vitamin B6-responsive sideroblastic anemia (285.0) Index entries containing 266.1: Avitaminosis (multiple NEC) (see also Deficiency, vitamin) 269.2 B6 266.1 Deficiency, deficient pyracin (alpha) (beta) 266.1 pyridoxal 266.1 pyridoxamine 266.1 pyridoxine (derivatives) 266.1 vitamin (multiple) NEC 269.2 B6 266.1 Dependence vitamin B6 266.1 Syndrome - see also Disease vitamin B6 deficiency 266.1