CPT code 95940: Intraoperative monitoring, one-on-one, in operating room2026 Medicare rate & RVUs

Medicare pays $26.72 for 95940 nationally in a facility.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 95940 covers

This service covers a physician’s or qualified health care professional’s personal, one-on-one attention to neurophysiologic monitoring during an operation in the operating room. Monitoring may include signals such as somatosensory or motor evoked potentials, EEG, or EMG. It is commonly used during spine procedures, including decompression and fusion, when changes in neural signals may alert the surgical team to potential injury. The monitoring professional observes the signals and communicates relevant changes to the operative team; the surgeon’s procedure itself is not the monitoring service.

Report the time spent providing this dedicated monitoring in 15-minute units. The record should identify the patient and operation, monitoring modalities, the monitoring professional, start and stop times, interruptions, and significant findings or communications. The operative report alone may not establish the monitoring time, so retain documentation from the professional who performed or supervised the service. Select this code for one-patient, personally attended monitoring in the operating room; monitoring from outside the room or involving more than one case has a different reporting circumstance.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 95940 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

95940 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 95940 rate is calculated

Each of 95940’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 95940

95940 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

95940 compared with similar codes

How to choose

95941Remote IONMHourly or multiple-patient

Choose 95940 for one-on-one, personally attended monitoring in the operating room in 15-minute units. 95941 describes outside-room monitoring or monitoring of more than one case, reported hourly.

95925Evoked potentialUpper limbs

95925 represents somatosensory evoked-potential testing. 95940 reports the time-based, attended monitoring service during an operation rather than a specific evoked-potential study.

95928Motor evoked potentialsUpper limbs

95928 represents central motor evoked-potential testing for upper limbs. 95940 identifies the one-on-one intraoperative monitoring service, not that specific modality or limb group.

95955Intraoperative EEGDuring surgery

95955 is an EEG service during surgery. 95940 covers attended intraoperative neurophysiology monitoring and is not limited to EEG.

Codes related to 95940

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates