794 Nonspecific abnormal results of function studies 
794.0 Nonspecific abnormal results of function study of brain and central nervous system 
794.00 Abnormal function study of brain and central nervous system, unspecified convert 794.00 to ICD-10-CM 794.01 Nonspecific abnormal echoencephalogram convert 794.01 to ICD-10-CM 794.02 Nonspecific abnormal electroencephalogram [EEG] convert 794.02 to ICD-10-CM
794.09 Other nonspecific abnormal results of function study of brain and central nervous system convert 794.09 to ICD-10-CM 794.1 Nonspecific abnormal results of function study of peripheral nervous system and special senses 794.10 Nonspecific abnormal response to nerve stimulation, unspecified convert 794.10 to ICD-10-CM 794.11 Nonspecific abnormal retinal function studies convert 794.11 to ICD-10-CM 794.12 Nonspecific abnormal electro-oculogram [EOG] convert 794.12 to ICD-10-CM 794.13 Nonspecific abnormal visually evoked potential convert 794.13 to ICD-10-CM 794.14 Nonspecific abnormal oculomotor studies convert 794.14 to ICD-10-CM 794.15 Nonspecific abnormal auditory function studies convert 794.15 to ICD-10-CM 794.16 Nonspecific abnormal vestibular function studies convert 794.16 to ICD-10-CM 794.17 Nonspecific abnormal electromyogram [EMG] convert 794.17 to ICD-10-CM 794.19 Other nonspecific abnormal results of function study of peripheral nervous system and special senses convert 794.19 to ICD-10-CM 794.2 Nonspecific abnormal results of pulmonary function study convert 794.2 to ICD-10-CM 794.3 Nonspecific abnormal results of function study of cardiovascular system 794.30 Abnormal cardiovascular function study, unspecified convert 794.30 to ICD-10-CM 794.31 Nonspecific abnormal electrocardiogram [ECG] [EKG] convert 794.31 to ICD-10-CM 794.39 Other nonspecific abnormal results of function study of cardiovascular system convert 794.39 to ICD-10-CM 794.4 Nonspecific abnormal results of function study of kidney convert 794.4 to ICD-10-CM 794.5 Nonspecific abnormal results of function study of thyroid convert 794.5 to ICD-10-CM 794.6 Nonspecific abnormal results of other endocrine function study convert 794.6 to ICD-10-CM 794.7 Nonspecific abnormal results of function study of basal metabolism convert 794.7 to ICD-10-CM 794.8 Nonspecific abnormal results of function study of liver convert 794.8 to ICD-10-CM 794.9 Nonspecific abnormal results of other specified function study convert 794.9 to ICD-10-CM