2006 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.* > 2006 ICD-9-CM Diagnosis 266.9 Unspecified vitamin b deficiency View the most recent version of ICD-9-CM 266.9 266.9 is a specific code that can be used to specify a diagnosis 266.9 contains 3 index entries View the ICD-9-CM Volume 1 266.* hierarchy  Index entries containing 266.9: Avitaminosis (multiple NEC) (see also Deficiency, vitamin) 269.2 B 266.9 with beriberi 265.0 pellagra 265.2 Deficiency, deficient vitamin (multiple) NEC 269.2 B (complex) NEC 266.9 with beriberi 265.0 pellagra 265.2 specified type NEC 266.2 Encephalopathy (acute) 348.30 vitamin B deficiency NEC 266.9