2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Symptoms 780-789 > Symptoms Concerning Nutrition Metabolism And Development 783.* > 2008 ICD-9-CM Diagnosis 783.2 Abnormal loss of weight and underweight  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 Therefore, this code may be out of date.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 783.2 can be accessed here. 783.2 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 783.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Use additional code to identify Body Mass Index (BMI), if known (V85.0-V85.54)