2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Ill-Defined And Unknown Causes Of Morbidity And Mortality 797-799 > Sudden Death Cause Unknown 798.* > 2006 ICD-9-CM Diagnosis 798.9 Unattended death View the most recent version of ICD-9-CM 798.9 798.9 is a specific code that can be used to specify a diagnosis 798.9 contains 3 index entries View the ICD-9-CM Volume 1 798.* hierarchy Alternate Terminology Death in circumstances where the body of the deceased was found and no cause could be discovered Found dead  Index entries containing 798.9: Death unattended (cause unknown) 798.9 Died - see also Death without medical attention (cause unknown) 798.9 Found dead (cause unknown) 798.9