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794.02 ABN ELECTROENCEPHALOGRAM


Code Information

Diagnosis Code: 794.02

Short Description: Abn electroencephalogram

Long Description: Nonspecific abnormal electroencephalogram [EEG]

Code Classification:

  • Symptoms, signs, and ill-defined conditions (780–799)
    • Nonspecific abnormal findings (790-796)
      • 794 Nonspecific abnormal results of function studies
        • 794.02 Abn electroencephalogram

Code Version: 2015 ICD-9-CM


Synonyms

  • Alpha amplitude asymmetry
  • Alpha coma type recording
  • Alpha frequency asymmetry
  • Asymmetric beta activity
  • Asymmetric electroencephalogram
  • Asymmetrical mu activity
  • Beta coma type recording
  • Bilateral periodic epileptiform discharges
  • Burst suppression
  • Continuous periodic complexes
  • Dominant alpha activity
  • Dominant beta activity
  • Dominant delta activity
  • Dominant theta activity
  • Electrocerebral silence
  • Electroencephalogram abnormal
  • Electroencephalogram abnormality with seizure
  • Electroencephalogram abnormality without seizure
  • Electroencephalogram artefact
  • Electroencephalogram pattern of uncertain significance
  • Excessive overbreathing response
  • Focal continuous delta activity
  • Focal continuous electroencephalogram abnormality
  • Focal continuous theta activity
  • Focal episodic delta activity
  • Focal episodic electroencephalogram abnormality
  • Focal episodic sharp waves
  • Focal episodic spike wave
  • Focal episodic spike wave with secondary generalization
  • Focal episodic spikes
  • Focal episodic theta activity
  • Focal episodic unilateral three per second spike wave
  • Focal recruiting discharge
  • Focal reduction of electroencephalogram activity
  • Focal rolandic spikes
  • Focal sharp waves
  • Focal spikes
  • Frontal intermittent rhythmic delta activity
  • Generalized atypical spike wave
  • Generalized continuous electroencephalogram abnormality
  • Generalized electroencephalogram amplitude asymmetry
  • Generalized electroencephalogram frequency asymmetry
  • Generalized epileptiform discharges
  • Generalized episodic electroencephalogram abnormality
  • Generalized intermittent delta activity
  • Generalized intermittent theta activity
  • Generalized multifocal spikes
  • Generalized slow spike wave
  • Generalized three per second spike wave
  • Intermittent periodic complexes
  • Light-induced electroencephalogram abnormality
  • Low amplitude electroencephalogram tracing
  • Low amplitude six per second spike wave
  • Low frequency alpha activity
  • Low frequency background activity
  • Low frequency delta activity
  • Low frequency theta activity
  • Occipital intermittent rhythmic delta activity
  • Periodic complexes
  • Periodic lateralized epileptiform discharges
  • Positive spikes
  • Prolonged overbreathing response
  • Rhythmic mid-temporal discharge
  • Small sharp transients during sleep
  • Sound-induced electroencephalogram abnormality
  • Subclinical rhythmical electroencephalogram discharges in adults
  • Temporal slowing
  • Trace alternant electroencephalogram pattern
  • Triphasic waves
  • Unilateral reduction of alpha activity

References to Index of Diseases and Injuries

The code 794.02 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Abnormal, abnormality, abnormalities - see also Anomaly
    • electroencephalogram (EEG) 794.02
  • Findings, (abnormal), without diagnosis (examination) (laboratory test) 796.4
    • electroencephalogram (EEG) 794.02

Crosswalk Information

The code 794.02 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
794.02 Right Arrow R94.01 Abnormal electroencephalogram [EEG]
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
794.00 Abnormal function study of brain and central nervous system, unspecified
794.01 Nonspecific abnormal echoencephalogram
794.09 Other nonspecific abnormal results of function study of brain and central nervous system
794.10 Nonspecific abnormal response to nerve stimulation, unspecified
794.11 Nonspecific abnormal retinal function studies
794.12 Nonspecific abnormal electro-oculogram [EOG]
794.13 Nonspecific abnormal visually evoked potential
794.14 Nonspecific abnormal oculomotor studies
794.15 Nonspecific abnormal auditory function studies
794.16 Nonspecific abnormal vestibular function studies
794.17 Nonspecific abnormal electromyogram [EMG]
794.19 Other nonspecific abnormal results of function study of peripheral nervous system and special senses
794.2 Nonspecific abnormal results of pulmonary function study
794.30 Abnormal cardiovascular function study, unspecified
794.31 Nonspecific abnormal electrocardiogram [ECG] [EKG]
794.39 Other nonspecific abnormal results of function study of cardiovascular system
794.4 Nonspecific abnormal results of function study of kidney
794.5 Nonspecific abnormal results of function study of thyroid
794.6 Nonspecific abnormal results of other endocrine function study
794.7 Nonspecific abnormal results of function study of basal metabolism
794.8 Nonspecific abnormal results of function study of liver
794.9 Nonspecific abnormal results of other specified function study

This page was last updated on: 10/1/2014

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