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 > ICD-9-CM Diagnosis 797 Senility without psychosis A person 65 through 79 years of age. For a person older than 79 years, AGED, 80 AND OVER is available. An age group comprised by people 65 years of age and older. 797 is a specific code that can be used to specify a diagnosis 797 contains 32 index entries