$328.75
95961 covers the initial brain-mapping service; 95962 is used for additional mapping time.
On this page
CMS RVU26D · Effective 2026-10-01
95961 Brain mapping Medicare reimbursement rates in Guam
Reports functional brain mapping by stimulation and recording to identify important cortical or subcortical areas during procedures such as epilepsy surgery. Compare 95961 office and facility rates across CMS payment localities in Guam.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 95961 in Guam?
Guam has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$394.60
1 of 1 localities have a supported rate.
Payment area: Hawaii, Guam
One mapped payment locality.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Neurophysiology
About 95961: Cortical and subcortical brain mapping
Reports functional brain mapping by stimulation and recording to identify important cortical or subcortical areas during procedures such as epilepsy surgery.
This service maps brain function by stimulating and/or recording from cortical and subcortical areas, helping the surgical team identify regions involved in functions such as language or movement. It is commonly performed during neurosurgery, including epilepsy surgery, by a qualified physician or other health care professional working with the operating team. Mapping may take place in the operating room or another location.
Select the code based on the mapping service and the physician or qualified professional’s time. The record should support the clinical purpose, stimulation or recording performed, findings relevant to the surgical plan, and time spent. CMS recognizes professional and technical components: report modifier 26 for the interpretation, TC for equipment and staff, or neither modifier for the global service. The professional and technical components are separately priced when billed with their respective modifiers.
CMS billing rules for 95961
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
Where the value comes from
- Work RVU2.97 · 27%
- Practice expense (office) RVU7.59 · 69%
- Malpractice RVU0.37 · 3%
1.6K
Medicare services in 2024 · #2639 by national volume
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.
95961 compared with similar codes
Office rates for Guam, from the same CMS release.
$449.44
95938 evaluates somatosensory pathway responses. 95961 maps functional brain areas through stimulation and/or recording.
$657.09
95939 evaluates motor evoked-potential responses in the limbs; 95961 maps cortical or subcortical function.
Compare 95961 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Hawaii, Guam →
Office / nonfacility
$394.60
Facility
Unavailable
Need rates for a whole code list?
Fee-sheet and API access are in early access. Tell us which codes and locations your team needs.
How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 95961 in Hawaii, Guam.
PPRRVU2026_Oct_nonQPP.csv
12,710
- Code
- 95961
- Physician work
- 2.97
- Practice expense
- 7.59
- Malpractice
- 0.37
GPCI2026.csv
46
- Locality
- Hawaii, Guam
- Physician work
- 1.000
- Practice expense
- 1.137
- Malpractice
- 0.579
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 2.97 | × 1.000 | 2.9700 |
| Practice expense | 7.59 | × 1.137 | 8.6298 |
| Malpractice | 0.37 | × 0.579 | 0.2142 |
| Total RVUs | 11.8141 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Hawaii, Guam$394.60
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 2.97 | 1 |
| Practice expense | 7.59 | 1.137 |
| Malpractice | 0.37 | 0.579 |
(2.97 × 1 + 7.59 × 1.137 + 0.37 × 0.579) × $33.4009 = $394.60
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
95961 billing questions
How is brain mapping different from somatosensory evoked-potential testing?
Brain mapping uses stimulation and/or recording to identify functional cortical or subcortical areas. Somatosensory evoked-potential testing evaluates responses along sensory pathways.
What documentation supports reporting this service?
Document the reason for mapping, the stimulation or recording performed, relevant responses and findings, and the physician or qualified professional’s time.
When should modifier 26 or TC be reported?
Use modifier 26 for the professional interpretation and TC for the technical service, including equipment and staff. Without either modifier, the claim represents the global service.
Can this service be reported with motor or sensory evoked-potential testing?
It may be reported in the same operative case when those tests are separately performed. The record should distinguish the mapping service from the evoked-potential testing.
What is the distinction between this code and 95962?
95961 reports the initial brain-mapping service. 95962 is the related code for additional mapping time.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
12,70795958,,Eeg monitoring/function test,A,,4.13,18.48,,18.48,NA,0.28,22.89,22.89,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,70895958,26,Eeg monitoring/function test,A,,4.13,2.41,,2.41,,0.20,6.74,6.74,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,70995958,TC,Eeg monitoring/function test,A,,0.00,16.07,,16.07,NA,0.08,16.15,16.15,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,03,0,99,0.00,0.00,0.00
12,71095961,,Electrode stimulation brain,A,,2.97,7.59,,7.59,NA,0.37,10.93,10.93,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,71195961,26,Electrode stimulation brain,A,,2.97,1.76,,1.76,,0.35,5.08,5.08,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,71295961,TC,Electrode stimulation brain,A,,0.00,5.83,,5.83,NA,0.02,5.85,5.85,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,03,0,99,0.00,0.00,0.00
12,71395962,,Electrode stim brain add-on,A,,3.21,5.65,,5.65,NA,0.36,9.22,9.22,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4309102,FL,99,REST OF FLORIDA,1.000,0.956,1.503
4410212,GA,01,ATLANTA,1.003,1.016,1.201
4510212,GA,99,REST OF GEORGIA,1.000,0.892,1.192
4601212,HI,01,"HAWAII, GUAM",1.000,1.137,0.579
4702202,ID,00,IDAHO,1.000,0.920,0.473
4806102,IL,16,CHICAGO,1.007,1.005,2.295
4906102,IL,12,EAST ST. LOUIS,1.000,0.920,2.014