HCPCS code G0453: Intraoperative monitoring, outside-OR, per 15 minutes2026 Medicare rate & RVUs

Medicare pays $27.39 for G0453 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 G0453 covers

G0453 covers real-time neurophysiologic monitoring during an operation when the monitoring professional is outside the operating room, such as at a remote workstation. The professional observes patient-specific signals during surgery and communicates clinically significant changes to the operating team. It is used for procedures in which ongoing monitoring can help the surgical team identify changes in neural function, including some spine and brain operations.

Report the service by patient and in 15-minute units, based on the time spent providing continuous monitoring. The record should identify the operation, monitoring professional, signals followed, monitoring start and stop times, significant signal changes, and communications with the surgical team. CMS assigns work, practice-expense, and malpractice relative value units to the service.

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 G0453 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

G0453 rates by state

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

How the G0453 rate is calculated

Each of G0453’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 G0453

G0453 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.

G0453 compared with similar codes

How to choose

95940Intraoperative monitoringOne-on-one, in operating room

Use G0453 when continuous monitoring is performed outside the operating room; 95940 describes monitoring performed in the operating room.

95941Remote IONMHourly or multiple-patient

Both describe continuous monitoring from outside the operating room. G0453 is reported in 15-minute units, while 95941 uses an hourly unit.

95938Sensory evoked potentialsUpper and lower limbs

95938 reports somatosensory evoked-potential testing; G0453 reports ongoing neurophysiologic monitoring during the operation.

Codes related to G0453

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