CPT code 61891: Neurostimulator revision, skull-mounted generator or receiver2026 Medicare rate & RVUs in New Mexico

In New Mexico, Medicare pays $838.68 for 61891 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 61891 nationwide

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

What 61891 covers

A neurosurgeon or functional neurosurgeon uses this service to revise or replace an implanted cranial neurostimulator pulse generator or receiver mounted at the skull. The work may involve reopening the prior operative site, addressing the existing device or its connections, and implanting a replacement unit when needed. A cranially mounted responsive neurostimulation system used for drug-resistant epilepsy is a typical clinical context. The procedure is generally performed in an operating room rather than an office.

Choose this code for revision or replacement of the skull-mounted generator or receiver, not simply because the patient already has cranial electrodes. The operative report should identify the device, the reason for revision or replacement, the work performed, and the resulting configuration. CMS classifies the service as major surgery with a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. When multiple procedures occur in one session, the highest-valued procedure is paid in full and others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.

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.

How New Mexico compares for 61891

Across 109 of 109 payment localities, the facility rate for 61891 runs from $722.01 in Arkansas to $1,068.39 in Miami, FL. New Mexico pays $838.68. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

61891 rates by state

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

See 61891 in every payment locality

How the 61891 rate is calculated

Each of 61891’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 61891

61891 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

Codes related to 61891

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

How 61891 has changed in New Mexico

Price 61891 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

• Abeytas
• Abiquiu
• Acomita Lake
• Adelino
• Agua Fria
• Alamillo
• Alamo
• Alamogordo

Browse all communities in New Mexico

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