2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Nonspecific Abnormal Findings 790-796 > Nonspecific Abnormal Results Of Function Studies 794.* > 2006 ICD-9-CM Diagnosis 794.00 Unspecified abnormal function study of brain and central nervous system View the most recent version of ICD-9-CM 794.00 794.00 is a specific code that can be used to specify a diagnosis 794.00 contains 4 index entries View the ICD-9-CM Volume 1 794.* hierarchy  Index entries containing 794.00: Abnormal, abnormality, abnormalities - see also Anomaly function studies brain 794.00 nervous system central 794.00 Findings, abnormal, without diagnosis (examination) (laboratory test) 796.4 function study NEC 794.9 brain 794.00 nervous system central 794.00