ICD-10 Diagnosis Code R94.01

Abnormal electroencephalogram [EEG]

Diagnosis Code R94.01

ICD-10: R94.01
Short Description: Abnormal electroencephalogram [EEG]
Long Description: Abnormal electroencephalogram [EEG]
This is the 2017 version of the ICD-10-CM diagnosis code R94.01

Valid for Submission
The code R94.01 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
      • Abnormal results of function studies (R94)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 794.02 - Abn electroencephalogram

  • Alpha coma type recording
  • Beta coma type recording
  • Bilateral periodic epileptiform discharges
  • Burst suppression
  • Café-au-lait macules with temporal dysrhythmia
  • Continuous periodic complexes
  • Electrocerebral silence
  • Electroencephalogram abnormal
  • Electroencephalogram abnormality with seizure
  • Electroencephalogram abnormality without seizure
  • 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 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 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
  • Isoelectric recording
  • Loss of reactivity
  • Low amplitude electroencephalogram tracing
  • 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
  • Prolonged overbreathing response
  • Temporal slowing
  • Triphasic waves

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