2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Symptoms 780-789 > General Symptoms 780.* > 2008 ICD-9-CM Diagnosis 780.01 Coma  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 Therefore, this code may be out of date.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 780.01 can be accessed here. A profound state of unconsciousness associated with depressed cerebral activity from which the individual cannot be aroused. Coma generally occurs when there is dysfunction or injury involving both cerebral hemispheres or the brain stem RETICULAR FORMATION. 780.01 is a specific code that can be used to specify a diagnosis 780.01 contains 1 index entry View the ICD-9-CM Volume 1 780.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 780.01: Coma 780.01 apoplectic (see also Disease, cerebrovascular, acute) 436 diabetic (with ketoacidosis) 250.3 hyperosmolar 250.2 eclamptic (see also Eclampsia) 780.39 epileptic 345.3 hepatic 572.2 hyperglycemic 250.2 hyperosmolar (diabetic) (nonketotic) 250.2 hypoglycemic 251.0 diabetic 250.3 insulin 250.3 hyperosmolar 250.2 nondiabetic 251.0 organic hyperinsulinism 251.0 Kussmaul's (diabetic) 250.3 liver 572.2 newborn 779.2 prediabetic 250.2 uremic - see Uremia