2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Other Metabolic Disorders And Immunity Disorders 270-279 > Obesity And Other Hyperalimentation 278.* > 2006 ICD-9-CM Diagnosis 278.0 Obesity View the most recent version of ICD-9-CM 278.0 Having a high amount of body fat. A person is considered obese if they have a body mass index (BMI) of 30 or more. Body weight grossly beyond skeletal and physical standards as the result of an excessive accumulation of FATS in the body. Depending on age, sex, and genetic background, a BODY MASS INDEX (BMI) greater than 30.0 can be considered obese, and a BMI greater than 40.0 can be considered morbidly obese (MORBID OBESITY). 278.0 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 278.* hierarchy 278.0 Excludes adiposogenital dystrophy (253.8) obesity of endocrine origin NOS (259.9)