icd 10 pcs code for extended video eeg monitoring

by Mrs. Jennie Strosin 4 min read

cpt code and description 95812 – Electroencephalogram (EEG) extended monitoring; 41-60 minutes -average fee payment- $350 – $360 95813 – Electroencephalogram (EEG) extended monitoring; greater than 1 hour

Query #1: Presence of ICD-10 procedure code 4A10X4Z, or CPT procedure code 95951 (both indicating video-EEG monitoring services); and Admission Type = Elective.Jun 10, 2020

Full Answer

What is the ICD 10 code for monitoring central nervous activity?

Monitoring of Central Nervous Electrical Activity, External Approach. ICD-10-PCS 4A10X4Z is a specific/billable code that can be used to indicate a procedure.

What are the ICD-9-CM codes for electroencephalography?

2015 ICD-9-CM Procedure 89.19 Video and radio-telemetered electroencephalographic monitoring Note: approximate conversions between ICD-9-CM codes and ICD-10-PCS codes may require clinical interpretation in order to determine the most appropriate conversion code (s) for your specific coding situation.

What is the CPT code for EEG?

*NOTE: Technical component only: CPT® code 95700 which is the code used to report set up and take down by the EEG technologist and CPT® code 95705 can be reported only once per service.

What does EEG stand for?

ELECTROENCEPHALOGRAM (EEG), CONTINUOUS RECORDING, PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL REVIEW OF RECORDED EVENTS, ANALYSIS OF SPIKE AND SEIZURE DETECTION, EACH INCREMENT OF GREATER THAN 12 HOURS, UP TO 26 HOURS OF EEG RECORDING, INTERPRETATION AND REPORT AFTER EACH 24-HOUR PERIOD; WITHOUT VIDEO

When to use long term video EEG?

How long is EEG monitoring?

How long does it take to record an EEG?

What is LTM monitoring?

How does video electroencephalographic monitoring improve patient outcomes?

What is the role of video and ambulatory EEG?

Is EEG waived in ICU?

See more

About this website

image

What is continuous video EEG monitoring?

Long-term continuous video EEG monitoring is done during an inpatient hospital stay that can last from five to seven days. The goal of this evaluation is to record your typical seizures using a video camera and continuous EEG monitoring so that your doctor can better diagnose and treat you.

How do you bill an EEG video?

Using the New Codes in Practice Technical Component codes are used daily. For example, a 72-hour unmonitored ambulatory video-EEG would be coded as 95724 for the physician's work, 95700 for the electrode set-up, and 3 technical units of 95708—1 unit coded for each day of monitoring.

What is the difference between EEG and video EEG?

A video EEG videotapes your child while the regular EEG is being done. The video recording is done over a longer period of time than a regular EEG. A video EEG can take from 6 hours to several days, depending on the information that is needed.

What is a video ambulatory EEG?

Abstract. Purpose: Video ambulatory EEG (V-AEEG) is a new technique which could add increased capacity for long term EEG monitoring to overstretched inpatient video telemetry (IPVT) services. We compare V-AEEG and IPVT for diagnostic efficacy, recording quality, patient acceptability and technologist time required.

Can code 95957 be billed if EEG monitoring is normal?

Digital EEG spike analysis (CPT® code 95957) performed in conjunction with an EEG is considered not medically necessary for ANY other indication. Digital EEG spike analysis performed in conjunction with a routine EEG is considered not medically necessary for ANY indication.

What is the procedure code for EEG?

Ambulatory electroencephalography (EEG) should always be preceded by a routine EEG. A routine EEG is described by Current Procedural Terminology (CPT®) codes 95812, 95813, 95816, 95819 or 95822 and refers to a routine EEG recording of less than a 24 hour continuous duration.

How long is a prolonged EEG?

1 to 2 hoursProlonged EEG: 1 to 2 hours may be done with or without video. Ambulatory EEG: recording the person's EEG in the outpatient setting or at home, usually for 1 to 3 days. The length of recording can vary and it may be done with or without video.

How long is continuous EEG?

30 to 48 hoursContinuous EEG lasted 30 to 48 hours; cEEG interruptions less than 2 hours were allowed for diagnostic purposes (eg, neuroimaging). Patients randomized to rEEG had two 20- to 30-minute recordings over 48 hours (no repetition within the same day).

How many types of EEG are there?

5 Types of EEG Tests for Brain Wave Monitoring.

What is a 48 hour ambulatory EEG?

An Ambulatory electroencephalogram EEG is a safe, painless test, which will record the electrical activity produced by your brain. An Ambulatory EEG uses a digital recording system to record brain activity for 48-96 hours while you go about your daily routine activity.

What is a 72 hour ambulatory EEG?

Ambulatory electroencephalography (aEEG) monitoring is an EEG that is recorded at home. It has the ability to record for up to 72 hours. The aEEG increases the chance of recording an event or abnormal changes in the brain wave patterns.

Why would a neurologist order an ambulatory EEG?

Your HonorHealth neurologist might suggest an ambulatory EEG to evaluate your brain waves over a few days. This lets your physician to see your brain waves while you're awake and while you're asleep. Your physician might recommend an ambulatory EEG to diagnose or study Epilepsy or nonepileptic seizures.

What type of service is an EEG?

An EEG is one of the main diagnostic tests for epilepsy. An EEG can also play a role in diagnosing other brain disorders.

What is the CPT code for a 24 hour EEG?

New Technical Component CodesRecording TypeDuration of LTEEGIntermittent Monitoring 5 to 12 pts monitoredEEG alone12 to 26 hours recording Typically 24 hours95709EEG w/ video2 to 12 hours recording Typically 8 hours95712EEG w/ video12 to 26 hours recording Typically 24 hours957151 more row

What is the difference between CPT code 95951 and 95953?

If your a Neurology provider is who hooking up the equipment to a patient and sending them home then this is NOT an attended ambulatory EEG and the correct code would be 95953. 95951 should only be used when a technologist is on site who can make interpretations throughout the procedure for the full 24, 48 or 72 hours.

What CPT code replaced 95951?

Of note to physicians who provide these services, CPT Code 95951 will now be reported as 95720 for the 24-hour VEEG service.

New 2020 Long-term EEG Monitoring CPT® Coding Structure

201 Chicago Avenue • Minneapolis, Minnesota 55415 • Tel: (800) 879-1960 • Fax: (612) 454-2746 • AAN.com Professional Services 95717 Electroencephalogram (EEG), continuous recording, physician or other qualified health

Medical Clinical Policy Bulletins

Explore the medical clinical policy bulletins that Aetna uses to decide which services and procedures we will cover.

Long-term EEG Monitoring FAQs

Page | 5 201 Chicago Avenue • Minneapolis, Minnesota 55415 • Tel: (800) 879-1960 • Fax: (612) 454-2746 • AAN.com electrodes are on, does that still count for the start of the VEEG? EEG recording concludes, not when the electrodes are removed.

Ambulatory Electroencephalography - Medical Clinical Policy Bulletins ...

Number: 0425. Policy. Aetna considers ambulatory electroencephalography (EEG) with or without home video monitoring medically necessary for any of the following conditions, where the member has had a recent (within the past 12 months) neurologic examination and standard EEG studies Footnotes *:. Classification of seizure type in members who have epilepsy (routine EEG is equivocal) – only ...

Billing and Coding: EEG – Ambulatory Monitoring

Article Text. This article contains coding and other guidelines that complement the Local Coverage Determination (LCD) for EEG - Ambulatory Monitoring.. Coding Information: Procedure codes may be subject to National Correct Coding Initiative (NCCI) edits or OPPS packaging edits.

When to use long term video EEG?

The National Institute for Health and Clinical Excellence’s clinical guideline on "The epilepsies: The diagnosis and management of the epilepsies in adults and children in primary and secondary care" (NICE, 2012) stated that "Long-term video or ambulatory EEG may be used in the assessment of children, young people and adults who present diagnostic difficulties after clinical assessment and standard EEG".

How long is EEG monitoring?

The ages of patients (523 boys and 477 girls) ranged from 1 month to 17 years (median age of 7 years). The mean length of stay was 1.5 days (range of 1 to 10 days). Outcomes were classified as: "useful-epileptic" (successful classification of epilepsy), "useful-non-epileptic" (demonstration of non-epileptic habitual events), "uneventful" (normal EEG without habitual events captured), and "inconclusive" (inability to clarify the nature of habitual events with abnormal inter-ictal EEG findings). A total of 315 studies were considered "useful-epileptic"; 219 "useful-non-epileptic"; 224 "uneventful"; 242 "inconclusive". Longer monitoring was associated with higher rate of a study classified as "useful-epileptic" in all age groups (Chi square test: p < 0.001). In addition, longer monitoring was associated with lower rate of a study classified as "inconclusive" in adolescences (p < 0.001). Approximately 50 % of the children with successful classification of epilepsy were assigned a specific diagnosis of epilepsy syndrome according to the International League Against Epilepsy (ILAE) classification. These researchers found only 22 children with ictal EEG showing a seizure onset purely originating from a unilateral temporal region. The authors concluded that video-EEG monitoring may fail to capture habitual episodes. To maximize the utility of studies in the future, a video-EEG monitoring longer than 3 days should be considered in selected children such as adolescences with habitual events occurring on a less than daily basis. These investigators recognized a reasonable clinical utility of the current ILAE classification in the present study. It may not be common to identify children with pure unilateral temporal lobe epilepsy solely based on video-EEG monitoring.

How long does it take to record an EEG?

An UpToDate review on "Video and ambulatory EEG monitoring in the diagnosis of seizures and epilepsy" (Hirsch et al, 2017) states that "Duration of recording – The likelihood of recording an event (and therefore making a diagnosis) increases with the duration of recording. In 1 case series of 248 adult patients admitted to an epilepsy monitoring unit, the median time to first diagnostic event, whether epileptic seizure or non-epileptic event, was 2 days; 35 % of patients required 3 or more days of monitoring, and 7 % more than 1 week. In another series of consecutive patients admitted to a video-EEG monitoring unit for diagnosis of spells, a stay of longer than 5 days was no less likely to be inconclusive than shorter stays in patients with epileptic seizures. In patients with presumed non-epileptic events, stays longer than 5 days were more likely to be inconclusive. When a first video-EEG study is not diagnostic, repeat testing can be helpful; in 1 study a 2nd study was diagnostically useful in 35 of 43 cases. The duration of recording will depend on the indication: subjects undergoing pre-surgical evaluation often require a significantly longer period of long-term monitoring to obtain clinically relevant (and previously unreported) information (mean of 3.5 days) compared to patients who are being recorded for diagnosis or classification (2.4 and 2.3 days, respectively)". The duration of recording will depend on the indication:

What is LTM monitoring?

Alving et al (2009) noted that inpatient long-term video-EEG monitoring (LTM) is an important diagnostic tool for patients with seizures and other paroxysmal behavioral events. The main referral categories are diagnosis (epileptic versus non-epileptic disorder), seizure classification and pre-surgical evaluation. The diagnostic usefulness of the LTM varies considerably (19 to 75 %) depending on how this was defined and on the selection of the patients. These researchers evaluated the diagnostic usefulness and the necessary duration of the LTM for the referral groups, in patients extensively investigated before the monitoring. An LTM was considered diagnostically useful when it provided previously not reported, clinically relevant information on the paroxysmal event. For the pre-surgical group, reaching a decision concerning surgery was an additional requirement. These investigators reviewed data from 234 consecutive LTM-sessions (221 patients) over a 2-year period. In 44 % of the cases the LTM was diagnostically useful. There were no significant differences concerning diagnostic usefulness among the main referral groups: diagnostic (41 %), classification (41 %) and pre-surgical (55 %). Diagnostic usefulness did not differ among the age groups either. The duration of the successful LTM-sessions was significantly longer in the pre-surgical group (mean of 3.5 days) than in the diagnostic and classification groups (2.4 and 2.3 days, respectively). The authors concluded that LTM is a valuable diagnostic tool even in patients extensively investigated before the monitoring, and is equally effective in the referral and age groups. However, patients referred for pre-surgical evaluation need considerably longer LTM, and this should be taken into account when planning the resources and calculating the costs.

How does video electroencephalographic monitoring improve patient outcomes?

The Agency for Health Care Policy and Research has stated that information provided by video electroencephalographic (EEG) monitoring has improved patient outcome by permitting accurate diagnoses and modified therapy.

What is the role of video and ambulatory EEG?

The role of video and ambulatory EEG is confined to refining or changing an uncertain diagnosis or in preoperative evaluations for seizure surgery (Ross et al, 2001). When seizures are frequent and features are atypical or uncertain, these EEGs may well contribute information necessary to correct a misdiagnosis. The literature describing these EEGs appears confined to specialists in academic centers.

Is EEG waived in ICU?

Footnote 1* Requirements for a standard EEG and neurologic examination are waived for medically necessary video EEG performed in an intensive care unit (ICU ).

What happens if you submit a claim without a diagnosis code?

A claim submitted without a valid ICD-10-CM diagnosis code will be returned to the provider as an incomplete claim under Section 1833 (e) of the Social Security Act.

What is a bill and coding article?

Billing and Coding articles provide guidance for the related Local Coverage Determination (LCD) and assist providers in submitting correct claims for payment. Billing and Coding articles typically include CPT/HCPCS procedure codes, ICD-10-CM diagnosis codes, as well as Bill Type, Revenue, and CPT/HCPCS Modifier codes. The code lists in the article help explain which services (procedures) the related LCD applies to, the diagnosis codes for which the service is covered, or for which the service is not considered reasonable and necessary and therefore not covered.

Can you use CPT in Medicare?

You, your employees and agents are authorized to use CPT only as contained in the following authorized materials of CMS internally within your organization within the United States for the sole use by yourself, employees and agents. Use is limited to use in Medicare, Medicaid or other programs administered by the Centers for Medicare and Medicaid Services (CMS). You agree to take all necessary steps to insure that your employees and agents abide by the terms of this agreement.

Does ICD-10-CM code assure coverage?

The correct use of an ICD-10-CM code listed below does not assure coverage of a service. The service must be reasonable and necessary in the specific case and must meet the criteria specified in the determination.

Is CPT a year 2000?

CPT is provided “as is” without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. AMA warrants that due to the nature of CPT, it does not manipulate or process dates, therefore there is no Year 2000 issue with CPT. AMA disclaims responsibility for any errors in CPT that may arise as a result of CPT being used in conjunction with any software and/or hardware system that is not Year 2000 compliant. No fee schedules, basic unit, relative values or related listings are included in CPT. The AMA does not directly or indirectly practice medicine or dispense medical services. The responsibility for the content of this file/product is with CMS and no endorsement by the AMA is intended or implied. The AMA disclaims responsibility for any consequences or liability attributable to or related to any use, non-use, or interpretation of information contained or not contained in this file/product. This Agreement will terminate upon no upon notice if you violate its terms. The AMA is a third party beneficiary to this Agreement.

What is EEG video monitoring?

Electroencephalographic video monitoring is the simultaneous recording of the EEG and video monitoring of patient behavior. This allows for the correlation of ictal and interictal electrical events with demonstrated or recorded seizure symptomatology. This type of monitoring allows the patient’s face or entire body to be displayed on a video screen.

Is EEG video monitoring necessary?

I. EEG video monitoring is medically necessary for the following indications, where the diagnosis cannot be made by neurological examination, standard EEG studies, and ambulatory cassette EEG monitoring, and non-neurological causes of symptoms

Does inclusion of a procedure, diagnosis or device code(s) constitute or imply member coverage or provider reimbursement?

Inclusion or exclusion of a procedure, diagnosis or device code(s) does not constitute or imply member coverage or provider reimbursement. Please refer to the member's contract benefits in effect at the time of service to determine coverage or non-coverage of these services as it applies to an individual member.

What is the measurement and monitoring section code?

Measurement and monitoring section codes represent procedures for determining the level of a physiological or physical function. Measurement and monitoring procedure codes have a first character value of "4". The second character value for body system is either physiological systems or physiological devices. There are two root operations in the measurement and monitoring section, as defined below:

What is the difference between EKG and EEG?

An EKG is the measurement of cardiac electrical activity, while an EEG is the measurement of electrical activity of the central nervous system. A cardiac catheterization performed to measure the pressure in the heart is coded as the measurement of cardiac pressure by percutaneous approach. 4A - Physiological Systems.

What is the fourth character of a medical code?

The fourth character specifies the body system measured or monitored . The fifth character specifies approaches as defined in the medical and surgical section. Instead of specifying device, the sixth character specifies the physiological or physical function being measured or monitored. Examples of physiological or physical function values are conductivity, metabolism, pulse, temperature, and volume. If a device used to perform the measurement or monitoring is inserted and left in, then insertion of the device is coded as a separate medical and surgical section procedure. The seventh character qualifier contains specific values as needed to further specify the body part (e.g., central, portal, pulmonary) or a variation of the procedure performed (e.g., ambulatory, stress).

Is insertion of a device a medical procedure?

If a device used to perform the measurement or monitoring is inserted and left in, then insertion of the device is coded as a separate medical and surgical section procedure.

What is the CPT code for EEG?

A routine EEG is described by Current Procedural Terminology (CPT®) codes 95812, 95813, 95816, 95819 or 95822 and refers to a routine EEG recording of less than a 24 hour continuous duration.

What does EEG stand for in medical terms?

ELECTROENCEPHALOGRAM (EEG), CONTINUOUS RECORDING, PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL REVIEW OF RECORDED EVENTS, ANALYSIS OF SPIKE AND SEIZURE DETECTION, EACH INCREMENT OF GREATER THAN 12 HOURS, UP TO 26 HOURS OF EEG RECORDING, INTERPRETATION AND REPORT AFTER EACH 24-HOUR PERIOD; WITHOUT VIDEO

What is a bill and coding article?

Billing and Coding articles provide guidance for the related Local Coverage Determination (LCD) and assist providers in submitting correct claims for payment. Billing and Coding articles typically include CPT/HCPCS procedure codes, ICD-10-CM diagnosis codes, as well as Bill Type, Revenue, and CPT/HCPCS Modifier codes. The code lists in the article help explain which services (procedures) the related LCD applies to, the diagnosis codes for which the service is covered, or for which the service is not considered reasonable and necessary and therefore not covered.

Can you use CPT in Medicare?

You, your employees and agents are authorized to use CPT only as contained in the following authorized materials of CMS internally within your organization within the United States for the sole use by yourself, employees and agents. Use is limited to use in Medicare, Medicaid or other programs administered by the Centers for Medicare and Medicaid Services (CMS). You agree to take all necessary steps to insure that your employees and agents abide by the terms of this agreement.

Is CPT a year 2000?

CPT is provided “as is” without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. AMA warrants that due to the nature of CPT, it does not manipulate or process dates, therefore there is no Year 2000 issue with CPT. AMA disclaims responsibility for any errors in CPT that may arise as a result of CPT being used in conjunction with any software and/or hardware system that is not Year 2000 compliant. No fee schedules, basic unit, relative values or related listings are included in CPT. The AMA does not directly or indirectly practice medicine or dispense medical services. The responsibility for the content of this file/product is with CMS and no endorsement by the AMA is intended or implied. The AMA disclaims responsibility for any consequences or liability attributable to or related to any use, non-use, or interpretation of information contained or not contained in this file/product. This Agreement will terminate upon no upon notice if you violate its terms. The AMA is a third party beneficiary to this Agreement.

When to use long term video EEG?

The National Institute for Health and Clinical Excellence’s clinical guideline on "The epilepsies: The diagnosis and management of the epilepsies in adults and children in primary and secondary care" (NICE, 2012) stated that "Long-term video or ambulatory EEG may be used in the assessment of children, young people and adults who present diagnostic difficulties after clinical assessment and standard EEG".

How long is EEG monitoring?

The ages of patients (523 boys and 477 girls) ranged from 1 month to 17 years (median age of 7 years). The mean length of stay was 1.5 days (range of 1 to 10 days). Outcomes were classified as: "useful-epileptic" (successful classification of epilepsy), "useful-non-epileptic" (demonstration of non-epileptic habitual events), "uneventful" (normal EEG without habitual events captured), and "inconclusive" (inability to clarify the nature of habitual events with abnormal inter-ictal EEG findings). A total of 315 studies were considered "useful-epileptic"; 219 "useful-non-epileptic"; 224 "uneventful"; 242 "inconclusive". Longer monitoring was associated with higher rate of a study classified as "useful-epileptic" in all age groups (Chi square test: p < 0.001). In addition, longer monitoring was associated with lower rate of a study classified as "inconclusive" in adolescences (p < 0.001). Approximately 50 % of the children with successful classification of epilepsy were assigned a specific diagnosis of epilepsy syndrome according to the International League Against Epilepsy (ILAE) classification. These researchers found only 22 children with ictal EEG showing a seizure onset purely originating from a unilateral temporal region. The authors concluded that video-EEG monitoring may fail to capture habitual episodes. To maximize the utility of studies in the future, a video-EEG monitoring longer than 3 days should be considered in selected children such as adolescences with habitual events occurring on a less than daily basis. These investigators recognized a reasonable clinical utility of the current ILAE classification in the present study. It may not be common to identify children with pure unilateral temporal lobe epilepsy solely based on video-EEG monitoring.

How long does it take to record an EEG?

An UpToDate review on "Video and ambulatory EEG monitoring in the diagnosis of seizures and epilepsy" (Hirsch et al, 2017) states that "Duration of recording – The likelihood of recording an event (and therefore making a diagnosis) increases with the duration of recording. In 1 case series of 248 adult patients admitted to an epilepsy monitoring unit, the median time to first diagnostic event, whether epileptic seizure or non-epileptic event, was 2 days; 35 % of patients required 3 or more days of monitoring, and 7 % more than 1 week. In another series of consecutive patients admitted to a video-EEG monitoring unit for diagnosis of spells, a stay of longer than 5 days was no less likely to be inconclusive than shorter stays in patients with epileptic seizures. In patients with presumed non-epileptic events, stays longer than 5 days were more likely to be inconclusive. When a first video-EEG study is not diagnostic, repeat testing can be helpful; in 1 study a 2nd study was diagnostically useful in 35 of 43 cases. The duration of recording will depend on the indication: subjects undergoing pre-surgical evaluation often require a significantly longer period of long-term monitoring to obtain clinically relevant (and previously unreported) information (mean of 3.5 days) compared to patients who are being recorded for diagnosis or classification (2.4 and 2.3 days, respectively)". The duration of recording will depend on the indication:

What is LTM monitoring?

Alving et al (2009) noted that inpatient long-term video-EEG monitoring (LTM) is an important diagnostic tool for patients with seizures and other paroxysmal behavioral events. The main referral categories are diagnosis (epileptic versus non-epileptic disorder), seizure classification and pre-surgical evaluation. The diagnostic usefulness of the LTM varies considerably (19 to 75 %) depending on how this was defined and on the selection of the patients. These researchers evaluated the diagnostic usefulness and the necessary duration of the LTM for the referral groups, in patients extensively investigated before the monitoring. An LTM was considered diagnostically useful when it provided previously not reported, clinically relevant information on the paroxysmal event. For the pre-surgical group, reaching a decision concerning surgery was an additional requirement. These investigators reviewed data from 234 consecutive LTM-sessions (221 patients) over a 2-year period. In 44 % of the cases the LTM was diagnostically useful. There were no significant differences concerning diagnostic usefulness among the main referral groups: diagnostic (41 %), classification (41 %) and pre-surgical (55 %). Diagnostic usefulness did not differ among the age groups either. The duration of the successful LTM-sessions was significantly longer in the pre-surgical group (mean of 3.5 days) than in the diagnostic and classification groups (2.4 and 2.3 days, respectively). The authors concluded that LTM is a valuable diagnostic tool even in patients extensively investigated before the monitoring, and is equally effective in the referral and age groups. However, patients referred for pre-surgical evaluation need considerably longer LTM, and this should be taken into account when planning the resources and calculating the costs.

How does video electroencephalographic monitoring improve patient outcomes?

The Agency for Health Care Policy and Research has stated that information provided by video electroencephalographic (EEG) monitoring has improved patient outcome by permitting accurate diagnoses and modified therapy.

What is the role of video and ambulatory EEG?

The role of video and ambulatory EEG is confined to refining or changing an uncertain diagnosis or in preoperative evaluations for seizure surgery (Ross et al, 2001). When seizures are frequent and features are atypical or uncertain, these EEGs may well contribute information necessary to correct a misdiagnosis. The literature describing these EEGs appears confined to specialists in academic centers.

Is EEG waived in ICU?

Footnote 1* Requirements for a standard EEG and neurologic examination are waived for medically necessary video EEG performed in an intensive care unit (ICU ).

image