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Official Description

Pharmacological or physical activation requiring physician or other qualified health care professional attendance during EEG recording of activation phase (eg, thiopental activation test)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 95954 refers to a specific procedure involving pharmacological or physical activation during an electroencephalogram (EEG) recording. This procedure is designed to stimulate seizure activity in patients, which can be crucial for diagnosing certain neurological conditions. The activation phase may involve the administration of a drug, such as thiopental, or the application of physical stimuli to provoke a response in the brain's electrical activity. It is essential that a physician or another qualified healthcare professional is present during this process to ensure patient safety and to monitor the patient's reactions to the activation. This attendance is critical as it allows for immediate assessment and intervention if necessary, thereby enhancing the reliability of the EEG results obtained during this activation phase. The procedure is particularly useful in cases where spontaneous seizure activity is not readily observable, allowing for a more comprehensive evaluation of the patient's neurological status.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 95954 is indicated for specific clinical scenarios where enhanced observation of seizure activity is necessary. The following conditions may warrant the use of this activation technique:

  • Seizure Disorders Patients with known seizure disorders may require this procedure to provoke seizures for diagnostic purposes.
  • Unexplained Neurological Symptoms Individuals presenting with unexplained neurological symptoms that may suggest seizure activity can benefit from this activation to clarify their condition.
  • Evaluation of Antiepileptic Drug Efficacy This procedure may be used to assess the effectiveness of antiepileptic medications in controlling seizure activity.

2. Procedure

The procedure for CPT® Code 95954 involves several critical steps to ensure proper activation and monitoring during the EEG recording. Each step is essential for achieving accurate results and maintaining patient safety.

  • Step 1: Preparation The patient is prepared for the EEG recording, which includes placing electrodes on the scalp to monitor brain activity. The healthcare professional explains the procedure to the patient, ensuring they understand the purpose and what to expect during the activation phase.
  • Step 2: Administration of Activation The physician or qualified healthcare professional administers the pharmacological agent, such as thiopental, or initiates physical activation methods. This step is crucial as it directly influences the brain's electrical activity, aiming to provoke seizure-like responses.
  • Step 3: Monitoring Throughout the activation phase, the healthcare professional remains in attendance to monitor the patient's vital signs and neurological responses. Continuous observation is vital to ensure the patient's safety and to document any changes in brain activity as recorded by the EEG.
  • Step 4: Documentation After the activation phase, the healthcare professional documents the patient's responses, the duration of the activation, and any observed seizure activity. This documentation is essential for interpreting the EEG results and for future clinical decision-making.

3. Post-Procedure

After the completion of the activation phase, the patient is monitored for any immediate post-procedure effects of the pharmacological agent or physical activation. It is important to assess the patient for any adverse reactions or complications that may arise from the activation. The healthcare professional will provide appropriate post-procedure care instructions, which may include monitoring for residual effects of the medication, advising on rest, and scheduling follow-up appointments to discuss the EEG findings. The results of the EEG, including any induced seizure activity, will be analyzed to guide further diagnostic and treatment options for the patient.

Short Descr EEG MONITORING/GIVING DRUGS
Medium Descr RX/PHYSICAL EEG ACTIVAJ PHYS/QHP ATTENDANCE
Long Descr Pharmacological or physical activation requiring physician or other qualified health care professional attendance during EEG recording of activation phase (eg, thiopental activation test)
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Not Discounted when Multiple
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 1
CCS Clinical Classification 199 - Electroencephalogram (EEG)
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
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2013-01-01 Changed Description Changed
Pre-1990 Added Code added.
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