Medicare Reimbursement for G0453 (Continuous Intraoperative Neurophysiologic Monitoring)

HCPCS code G0453 describes continuous intraoperative neurophysiologic monitoring performed per unit of time by a physician or qualified professional other than the surgeon. This page shows the Medicare Physician Fee Schedule (PFS) allowed amount, both at the national level and adjusted for locality, and notes that non-facility and facility rates are equal for this code. All figures are estimates based on the current year's published rates.

Medicare allowed amount (2026)

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Maximum units per day (MUE)

Medicare’s Medically Unlikely Edit caps this code at 40 units per patient per day — Date of Service Edit: Clinical. Units above the MUE are denied; some MUEs can be exceeded only with appropriate documentation and modifiers where policy allows.

How the amount is calculated

Medicare's PFS payment is built from three Relative Value Units (RVUs) — work, practice expense (PE), and malpractice (MP) — that reflect the physician effort, overhead costs, and liability risk associated with a service. Each RVU component is adjusted by the Geographic Practice Cost Index (GPCI) for the specific locality to account for regional cost differences, then the adjusted RVUs are summed and multiplied by the annual national conversion factor to produce the allowed amount. For G0453, the practice-expense RVU is the same in both non-facility and facility settings, so the calculated total does not differ by place of service. The final locality-specific rate can shift slightly year to year as CMS updates RVUs, GPCIs, or the conversion factor.

RVUs — work 0.6, practice expense 0.17 (non-facility) / 0.17 (facility), malpractice 0.05 — × the locality GPCIs × the 2026 conversion factor of $33.40.

Good to know

• This is an estimate only; actual Medicare payment may differ based on claim-specific details.
• Medicare typically pays 80% of the allowed amount after the annual deductible is met.
• Modifiers, multiple-procedure rules, sequestration, and annual budget-neutrality adjustments can change the final payment.
• Always verify current rates with your Medicare Administrative Contractor (MAC) before billing or appealing a claim.

Frequently asked

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Estimated Medicare Physician Fee Schedule amount. Medicare generally pays 80% after the deductible; actual amounts vary by locality, modifiers, sequestration, and annual updates. Verify with your MAC.