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Auditory evoked potentials (AEP) are specialized neurodiagnostic tests that measure the brain's electrical responses to auditory stimuli, such as sounds produced by an acoustic pulse, brief tones, or short bursts of broadband clicks. These responses are essentially voltage fluctuations that occur in the brain following the presentation of sound, reflecting the auditory system's function. The primary purpose of conducting AEP testing is to evaluate the integrity and functionality of the auditory nerve, particularly in the context of potential disorders affecting the vestibulocochlear nerve or the brainstem. During the procedure, a high-level clicking sound is delivered to the ear being tested, and the resulting auditory brainstem response (ABR) is recorded using surface electrodes strategically placed on the patient's forehead and earlobes, or alternatively, on the forehead, nape of the neck, and either the shoulder or cheek. The test aims to identify specific waveforms generated by the auditory system; if certain waves are not detected, the sound stimulus intensity is increased until a complete ABR is achieved. Additional manipulations of the sound stimuli may be employed to ensure optimal responses are captured. The procedure is typically performed on both ears, allowing for a comparative analysis of the auditory responses. The findings from the AEP test are compiled into a comprehensive written report that includes interpretations and recommendations based on the observed results.
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Auditory evoked potentials (AEP) testing is indicated for various conditions and symptoms that may affect auditory nerve function. The following are explicitly provided indications for performing this procedure:
The procedure for conducting auditory evoked potentials involves several key steps that ensure accurate measurement of the brain's response to auditory stimuli. The following procedural steps are outlined:
After the auditory evoked potentials procedure, patients may resume their normal activities immediately, as there are typically no significant side effects or recovery time required. The results of the AEP test will be compiled into a report, which will be provided to the referring physician for further evaluation and management. It is important for the physician to review the findings to determine any necessary follow-up actions or additional testing that may be warranted based on the results. Patients may be advised to discuss the report with their healthcare provider to understand the implications of the findings and any potential next steps in their care.
| Short Descr | AEP NEURODIAGNOSTIC I&R | Medium Descr | AEP NEURODIAGNOSTIC INTERPRETATION AND REPORT | Long Descr | Auditory evoked potentials; neurodiagnostic, with interpretation and report | Status Code | Active Code | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 0 - Physician Service Code | Multiple Procedures (51) | 0 - No payment adjustment rules for multiple procedures apply. | Bilateral Surgery (50) | 2 - 150% payment adjustment does NOT apply. | Physician Supervisions | 02 - Procedure must be performed under the direct supervision of a physician. | 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) | none | MUE | 1 |
This is a primary code that can be used with these additional add-on codes.
| 95940 | Addon Code Resequenced Code MPFS Status: Active Code APC N Continuous intraoperative neurophysiology monitoring in the operating room, one on one monitoring requiring personal attendance, each 15 minutes (List separately in addition to code for primary procedure) | 95941 | Addon Code Resequenced Code MPFS Status: Not valid for Medicare purposes APC N Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby) or for monitoring of more than one case while in the operating room, per hour (List separately in addition to code for primary procedure) |
| 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. | AB | Audiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose of prescribing, fitting, or changing hearing aids; service may be performed once every 12 months, per beneficiary | GA | Waiver of liability statement issued as required by payer policy, individual case | 52 | Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use). | PD | Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days | 53 | Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use). | 76 | Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service. | 79 | Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.) | CC | Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed) | CR | Catastrophe/disaster related | GC | This service has been performed in part by a resident under the direction of a teaching physician | GV | Attending physician not employed or paid under arrangement by the patient's hospice provider | GW | Service not related to the hospice patient's terminal condition | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit | GZ | Item or service expected to be denied as not reasonable and necessary | SA | Nurse practitioner rendering service in collaboration with a physician | XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | XS | Separate structure, a service that is distinct because it was performed on a separate organ/structure | XU | Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service |
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| 2021-01-01 | Added | Code added. |
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