$112.51
Use 95829 for electrocorticography performed during surgery. Use 95836 for electrocorticography from an implanted brain neurostimulator.
On this page
CMS RVU26D · Effective 2026-10-01
95829 Surgical ECoG Medicare reimbursement rates in Connecticut
Reports electrocorticography performed during surgery to record electrical activity directly from the cerebral cortex and support intraoperative assessment. Compare 95829 office and facility rates across CMS payment localities in Connecticut.
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 95829 in Connecticut?
Connecticut 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
$2115.62
1 of 1 localities have a supported rate.
Payment area: Connecticut
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.
Neurology testing
About 95829: Intraoperative electrocorticogram
Reports electrocorticography performed during surgery to record electrical activity directly from the cerebral cortex and support intraoperative assessment.
This service records electrical activity directly from the exposed cerebral cortex during surgery, using electrodes placed on the brain surface. It is used in neurosurgical settings, including operations in which cortical activity is assessed as part of epilepsy surgery. The recording is distinct from a routine scalp EEG and from analysis of an implanted neurostimulator.
Report 95829 for the operative cortical recording and its interpretation; documentation should identify the surgical context and support that the study was performed and interpreted. CMS recognizes a professional component for interpretation, reported with modifier 26, and a technical component for the equipment and staff, reported with modifier TC. Without either modifier, the claim represents the global service. CMS separately prices both component modifiers, so billing teams should identify whether the claim is for interpretation, technical work, or the complete service.
CMS billing rules for 95829
- 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 RVU6.05 · 10%
- Practice expense (office) RVU52.61 · 89%
- Malpractice RVU0.42 · 1%
578
Medicare services in 2024 · #3431 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.
95829 compared with similar codes
Office rates for Connecticut, from the same CMS release.
$770.16
95830 describes insertion of EEG electrodes. It is not the code for recording and interpreting cortical activity during surgery.
$443.79
95816 describes an awake-and-drowsy EEG, generally recorded from scalp electrodes; 95829 is an operative recording from the cerebral cortex.
Compare 95829 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
Connecticut →
Office / nonfacility
$2115.62
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 95829 in Connecticut.
PPRRVU2026_Oct_nonQPP.csv
12,568
- Code
- 95829
- Physician work
- 6.05
- Practice expense
- 52.61
- Malpractice
- 0.42
GPCI2026.csv
38
- Locality
- Connecticut
- Physician work
- 1.020
- Practice expense
- 1.077
- Malpractice
- 1.210
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 6.05 | × 1.020 | 6.1710 |
| Practice expense | 52.61 | × 1.077 | 56.6610 |
| Malpractice | 0.42 | × 1.210 | 0.5082 |
| Total RVUs | 63.3402 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Connecticut$2115.62
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 6.05 | 1.02 |
| Practice expense | 52.61 | 1.077 |
| Malpractice | 0.42 | 1.21 |
(6.05 × 1.02 + 52.61 × 1.077 + 0.42 × 1.21) × $33.4009 = $2115.62
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.
95829 billing questions
How does 95829 differ from a routine EEG?
95829 is for cortical electrical recording during surgery, with electrodes on the exposed brain. Codes such as 95816 and 95819 describe scalp EEG studies in awake or sleep states.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the equipment and staff portion. Submit 95829 without either modifier when billing the global service.
What documentation supports 95829?
Document that the recording took place during surgery, the cortical recording performed, and the interpretation. For a component claim, identify whether the billed service was professional or technical.
Is 95829 the code for checking an implanted brain neurostimulator?
No. 95829 describes electrocorticography during surgery; 95836 addresses electrocorticography from an implanted brain neurostimulator.
Is electrode insertion alone reported as 95829?
No. 95829 represents the operative electrocorticogram, including its professional and technical components as applicable. Code 95830 describes electrode insertion for EEG and represents a different service.
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.
12,56595824,,Eeg cerebral death only,C,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,56695824,26,Eeg cerebral death only,A,,0.72,0.40,,0.40,,0.03,1.15,1.15,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,56795824,TC,Eeg cerebral death only,C,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
12,56895829,,Surgery electrocorticogram,A,,6.05,52.61,,52.61,NA,0.42,59.08,59.08,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,56995829,26,Surgery electrocorticogram,A,,6.05,3.72,,3.72,,0.33,10.10,10.10,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,57095829,TC,Surgery electrocorticogram,A,,0.00,48.89,,48.89,NA,0.09,48.98,48.98,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
12,57195830,,Insert electrodes for eeg,A,,1.66,19.68,,0.48,,0.14,21.48,2.28,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808