CPT code 61720: Brain electrode placement, long-term seizure monitoring2026 Medicare rate & RVUs in Mississippi

Reports stereotactic placement of intracranial electrodes for prolonged seizure monitoring when the epilepsy team needs to localize seizure activity within the brain.

CMS RVU26DEffective Oct 1, 2026One payment locality14 Medicare services in 2024

In Mississippi, Medicare pays $1,137.57 for 61720 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$1,137.57Hospital or facility

Check a contract rate as a % of Medicare · 61720 nationwide

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

We’ll open 61720 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Mississippi
  2. What 61720 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 61720 covers

A neurosurgeon places electrodes within the brain through burr holes, using stereotactic guidance to position them for prolonged recording. The procedure is used in epilepsy surgery evaluations when noninvasive testing has not adequately localized seizure onset, allowing an epilepsy team to record brain activity during monitoring. It is typically performed in a hospital operating room, followed by monitoring in an epilepsy unit.

Report 61720 for electrode placement specifically for long-term seizure monitoring, not for electrodes placed for functional neurosurgery or tissue sampling. The operative report should support the stereotactic approach and monitoring purpose. The 90-day global period includes the day-before preoperative visit and related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this service; 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 Mississippi compares for 61720

Across 109 of 109 payment localities, the facility rate for 61720 runs from $1,076.55 in Wisconsin to $1,651.47 in Miami, FL. Mississippi pays $1,137.57. The RVUs are the same everywhere; the geographic indexes change the dollars.

61720 in Mississippi vs other payment areas
  1. Mississippi · this page$1,137.57
  2. Los Angeles, CA · California$1,286.83+$149.26
  3. Washington, DC area · District of Columbia$1,400.79+$263.22
  4. Miami, FL · Florida$1,651.47+$513.90
  5. Chicago, IL · Illinois$1,582.73+$445.16
  6. Manhattan, NY · New York$1,513.92+$376.35
  7. Alaska · Alaska$1,470.12+$332.55

Other areas in Mississippi first, then benchmark localities. Bars start at $0.

Every other payment area

61720 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$1,101.93
ArkansasArkansas—$1,082.43
ArizonaArizona—$1,214.16
Bakersfield, CACalifornia—$1,222.01
Chico, CACalifornia—$1,203.19
El Centro, CACalifornia—$1,204.40
Fresno, CACalifornia—$1,203.19
Hanford, CACalifornia—$1,203.19

61720 rates by state

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

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
61720 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 61720 in every payment locality

How the 61720 rate is calculated

Each of 61720’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.

How the rate is built · 61720

RVUs × geographic indexes × conversion factor

Office or facility?

Work17.18

17.18 RVUs× 1.000 GPCI

Practice expense13.38

13.38 RVUs× 1.000 GPCI

Malpractice7.25

7.25 RVUs× 1.000 GPCI

Adjusted RVUs

37.8100

Conversion factor

$33.4009

Medicare rate

$1,262.89

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Mississippi inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

6,876

Code
61720
Physician work
17.18
Practice expense
13.38
Malpractice
7.25

GPCI2026.csv

67

Locality
Mississippi
Physician work
1.000
Practice expense
0.861
Malpractice
0.739
Facility calculation for 61720 in Mississippi
ComponentRVULocality factorAdjusted
Physician work17.18× 1.00017.1800
Practice expense13.38× 0.86111.5202
Malpractice7.25× 0.7395.3578
Total RVUs34.0579
Conversion factor× 33.4009

Facility rate, Mississippi$1137.57

Facility: (17.18 × 1 + 13.38 × 0.861 + 7.25 × 0.739) × $33.4009 = $1137.57

Open 61720 in the RVU calculator

Payment rules and modifiers for 61720

61720 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 61720

Brain electrode placement, long-term seizure monitoring

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.11/0.76/0.13Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 61720

Brain electrode placement, long-term seizure monitoring

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

61720 without 51 · national facility

$1,262.89

Brain electrode placement, long-term seizure monitoring

61720-51 · Second procedure: 50%

$631.45

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

How 61720 has changed in Mississippi

61720 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$1,137.57RVU26D
2026-07-01Not available in this setting$1,137.57RVU26C
2026-04-01Not available in this setting$1,137.57RVU26B
2026-01-01Not available in this setting$1,137.57RVU26A
2025-10-01Not available in this setting$1,141.67RVU25D
2025-07-01Not available in this setting$1,141.67RVU25C
2025-04-01Not available in this setting$1,141.67RVU25B
2025-01-01Not available in this setting$1,141.67RVU25A
2024-10-01Not available in this setting$1,169.24RVU24D
2024-07-01Not available in this setting$1,169.24RVU24C
2024-04-01Not available in this setting$1,169.24RVU24B
2024-03-09Not available in this setting$1,169.24RVU24AR
2024-01-01Not available in this setting$1,150.16RVU24A
2023-10-01Not available in this setting$1,166.00RVU23D
2023-07-01Not available in this setting$1,166.00RVU23C
2023-04-01Not available in this setting$1,166.00RVU23B
2023-01-01Not available in this setting$1,166.00RVU23A
2022-10-01Not available in this setting$1,160.39RVU22D
2022-07-01Not available in this setting$1,160.39RVU22C
2022-04-01Not available in this setting$1,160.39RVU22B
2022-01-01Not available in this setting$1,160.39RVU22A
2021-10-01Not available in this setting$1,160.87RVU21D
2021-07-01Not available in this setting$1,160.87RVU21C
2021-04-01Not available in this setting$1,160.87RVU21B
2021-01-01Not available in this setting$1,160.87RVU21A
2020-10-01Not available in this setting$1,145.32RVU20D
2020-07-01Not available in this setting$1,145.32RVU20C
2020-04-01Not available in this setting$1,145.32RVU20B
2020-01-01Not available in this setting$1,145.32RVU20A
2019-10-01Not available in this setting$1,121.27RVU19D
2019-07-01Not available in this setting$1,121.27RVU19C
2019-04-01Not available in this setting$1,121.27RVU19B
2019-01-01Not available in this setting$1,121.27RVU19A
2018-10-01Not available in this setting$1,119.29RVU18D
2018-07-01Not available in this setting$1,119.29RVU18C
2018-04-01Not available in this setting$1,119.29RVU18B
2018-01-01Not available in this setting$1,119.29RVU18AR1
2017-10-01Not available in this setting$1,149.85RVU17D
2017-07-01Not available in this setting$1,149.85RVU17C
2017-04-01Not available in this setting$1,149.85RVU17B
2017-01-01Not available in this setting$1,149.85RVU17A
2016-10-01Not available in this setting$1,179.89RVU16D
2016-07-01Not available in this setting$1,179.89RVU16C
2016-04-01Not available in this setting$1,179.89RVU16B
2016-01-01Not available in this setting$1,179.89RVU16A
2015-10-01Not available in this setting$1,189.31RVU15D
2015-07-01Not available in this setting$1,189.31RVU15C
2015-04-01Not available in this setting$1,183.39RVU15B
2015-01-01Not available in this setting$1,183.39RVU15A
2014-10-01Not available in this setting$1,170.52RVU14D
2014-07-01Not available in this setting$1,170.52RVU14C
2014-04-01Not available in this setting$1,170.52RVU14B
2014-01-01Not available in this setting$1,170.52RVU14A
2013-10-01Not available in this setting$1,170.86RVU13D
2013-07-01Not available in this setting$1,170.86RVU13C
2013-04-01Not available in this setting$1,170.86RVU13B
2013-01-01Not available in this setting$1,170.86RVU13AR

Price 61720 for an earlier date of service

Where the Mississippi rate applies

Mississippi is a Medicare payment area, not a city. Our Census mapping connects it to 427 cities and communities in Mississippi. Some span more than one payment area; confirm with the service ZIP.

  • Abbeville
  • Aberdeen
  • Ackerman
  • Agricola
  • Alcorn State University
  • Algoma
  • Alligator
  • Amory

Browse all communities in Mississippi

61720 billing questions

How is 61720 distinguished from 61735?

61720 is for intracranial electrode placement for long-term seizure monitoring. Use 61735 when the electrodes are placed for functional neurosurgery.

Are the burr holes included?

Yes. The electrode-placement service includes the burr hole access described for this procedure; do not separately report that access as a distinct service.

Can modifier 50 be used when electrodes are placed on both sides?

No. Modifier 50 is inappropriate for this code. Report the procedure based on the service performed, not as a bilateral procedure.

Can an assistant surgeon or co-surgeon be reported?

Medicare does not pay an assistant at surgery for 61720. Co-surgeons and team surgery are not permitted.

What documentation supports reporting 61720?

The operative report should show stereotactic intracranial electrode placement and identify prolonged seizure monitoring as the purpose. Placement for functional neurosurgery or biopsy 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 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

Show the CMS file lines behind this rate
RVUs for 61720PPRRVU2026_Oct_nonQPP.csv, line 6,876 (RVU26D)
Geographic factors for MississippiGPCI2026.csv, line 67 (RVU26D)

Open CMS sourceHow we calculate rates

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