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CPT code 66770: Intraocular lesion removal, ciliary body lesion2026 Medicare rate & RVUs in Mississippi

Report 66770 when an ophthalmologist surgically excises a lesion of the ciliary body rather than destroying ciliary tissue to treat glaucoma.

CMS RVU26DEffective Oct 1, 2026One payment locality12 Medicare services in 2024

In Mississippi, Medicare pays $485.69 for 66770 in the office and $383.60 when it’s performed in a hospital or facility.

$485.69Office (non-facility)
$383.60Hospital or facility
−9.1%vs the national office rate ($534.08)

Check a contract rate as a % of Medicare · 66770 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 66770 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Mississippi
  2. What 66770 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 66770 covers

CPT 66770 describes surgical removal of a lesion involving the ciliary body, the structure inside the eye that produces aqueous humor. An ophthalmologist typically performs the procedure in an operating room, using an approach suited to the lesion’s location and extent. It is distinct from procedures that destroy ciliary tissue to lower intraocular pressure; those treat glaucoma rather than excise a lesion.

Select the code when the operative record supports excision of a ciliary body lesion. Documentation should identify the lesion’s site and describe the excision performed and the treated eye. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment is restricted; 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 66770

Across 109 of 109 payment localities, the office rate for 66770 runs from $481.54 in Arkansas to $689.61 in San Benito County, CA. Mississippi pays $485.69. The RVUs are the same everywhere; the geographic indexes change the dollars.

66770 in Mississippi vs other payment areas
  1. Mississippi · this page$485.69
  2. Los Angeles, CA · California$595.31+$109.62
  3. Washington, DC area · District of Columbia$603.36+$117.67
  4. Miami, FL · Florida$571.15+$85.46
  5. Chicago, IL · Illinois$557.40+$71.71
  6. Manhattan, NY · New York$607.68+$121.99
  7. Alaska · Alaska$647.61+$161.92

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

Every other payment area

66770 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$487.44$383.69
ArkansasArkansas$481.54$379.68
ArizonaArizona$521.94$407.04
Bakersfield, CACalifornia$562.33$432.37
Chico, CACalifornia$560.78$430.83
El Centro, CACalifornia$560.86$430.90
Fresno, CACalifornia$560.78$430.83
Hanford, CACalifornia$560.78$430.83

66770 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

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

$481.54

$647.61

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
66770 office rate range by state
State / territoryOffice rate rangeLocalities
AK$647.611
AL$487.441
AR$481.541
AZ$521.941
CA$560.78–$689.6129
CO$553.431
CT$565.911
DC$603.361
DE$529.671
FL$527.96–$571.153
GA$502.68–$542.932
GU$571.131
HI$571.131
IA$497.531
ID$500.321
IL$515.20–$557.404
IN$502.751
KS$495.701
KY$497.381
LA$496.78–$517.422
MA$550.98–$602.362
MD$538.61–$603.363
ME$502.65–$525.422
MI$508.38–$533.702
MN$532.271
MO$489.70–$518.823
MS$485.691
MT$534.051
NC$507.061
ND$524.761
NE$499.781
NH$545.181
NJ$572.91–$598.712
NM$510.791
NV$531.781
NY$513.49–$620.545
OH$506.481
OK$496.481
OR$528.14–$568.632
PA$507.09–$553.772
PR$537.351
RI$546.701
SC$507.511
SD$523.661
TN$497.821
TX$504.29–$551.178
UT$513.361
VA$524.05–$603.362
VI$537.351
VT$523.141
WA$549.81–$613.532
WI$509.831
WV$499.101
WY$530.001

See 66770 in every payment locality

How the 66770 rate is calculated

Each of 66770’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 · 66770

RVUs × geographic indexes × conversion factor

Office or facility?

Work5.98

5.98 RVUs× 1.000 GPCI

Practice expense9.54

9.54 RVUs× 1.000 GPCI

Malpractice0.47

0.47 RVUs× 1.000 GPCI

Adjusted RVUs

15.9900

Conversion factor

$33.4009

Medicare rate

$534.08

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

7,394

Code
66770
Physician work
5.98
Practice expense
9.54
Malpractice
0.47

GPCI2026.csv

67

Locality
Mississippi
Physician work
1.000
Practice expense
0.861
Malpractice
0.739
Office calculation for 66770 in Mississippi
ComponentRVULocality factorAdjusted
Physician work5.98× 1.0005.9800
Practice expense9.54× 0.8618.2139
Malpractice0.47× 0.7390.3473
Total RVUs14.5413
Conversion factor× 33.4009

Office rate, Mississippi$485.69

Office: (5.98 × 1 + 9.54 × 0.861 + 0.47 × 0.739) × $33.4009 = $485.69

Facility: (5.98 × 1 + 5.99 × 0.861 + 0.47 × 0.739) × $33.4009 = $383.60

Open 66770 in the RVU calculator

Payment rules and modifiers for 66770

66770 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 66770

Intraocular lesion removal, ciliary body lesion

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)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
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)0.10/0.70/0.20Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 66770

Intraocular lesion removal, ciliary body lesion

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 50 · payment effect

With and without the modifier

66770 without 50 · national office

$534.08

Intraocular lesion removal, ciliary body lesion

66770-50 · Bilateral: 150%

$801.12

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

Codes related to 66770

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

Codes related to 66770
CodeHow it relatesOffice range, Mississippi
Used instead
66600Iris surgery, lesion removalUsed for removal of a lesion located in the iris rather than the ciliary body.No office rate
66710Ciliary body treatment, transscleral laserDestroys ciliary body tissue to treat glaucoma rather than excising a lesion.$404.98
66711Endoscopic cyclophotocoagulation, ciliary body destructionEndoscopic ciliary body destruction treats glaucoma, not lesion removal.No office rate
66740Ciliary body ablation, other operative methodCiliary body destruction is a different treatment from surgical lesion excision.$403.54

How 66770 has changed in Mississippi

66770 · Office / nonfacility

$485.69

Effective 2026-10-01

The base rate is $23.64 higher than on 2025-10-01, moving from $462.05 to $485.69 (5.1%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

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

  1. January 1, 2026

    RVU26A

    $462.05changed to$485.69

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 6.13 changed to 5.98
    • Practice expense RVU 9.12 changed to 9.54
    • Malpractice RVU 0.50 changed to 0.47
    • Practice expense GPCI 0.852 changed to 0.861
    • Malpractice GPCI 0.768 changed to 0.739

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $477.27changed to$462.05

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 9.21 changed to 9.12
    • Malpractice RVU 0.47 changed to 0.50

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $469.48changed to$477.27

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $478.71changed to$469.48

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 9.05 changed to 9.21
    • Malpractice RVU 0.46 changed to 0.47
    • Practice expense GPCI 0.847 changed to 0.852
    • Malpractice GPCI 0.720 changed to 0.768

  5. January 1, 2023

    RVU23A

    $479.88changed to$478.71

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.83 changed to 9.05
    • Malpractice RVU 0.45 changed to 0.46
    • Practice expense GPCI 0.842 changed to 0.847
    • Malpractice GPCI 0.671 changed to 0.720

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $483.56changed to$479.88

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 8.82 changed to 8.83

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $489.99changed to$483.56

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 8.42 changed to 8.82
    • Malpractice RVU 0.46 changed to 0.45
    • Practice expense GPCI 0.856 changed to 0.842
    • Malpractice GPCI 0.521 changed to 0.671

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $493.30changed to$489.99

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 8.50 changed to 8.42
    • Malpractice RVU 0.44 changed to 0.46
    • Practice expense GPCI 0.870 changed to 0.856
    • Malpractice GPCI 0.370 changed to 0.521

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $492.89changed to$493.30

    • Conversion factor 35.9996 changed to 36.0391
    • Malpractice RVU 0.45 changed to 0.44

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $488.07changed to$492.89

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 8.36 changed to 8.50
    • Practice expense GPCI 0.867 changed to 0.870
    • Malpractice GPCI 0.492 changed to 0.370

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $487.35changed to$488.07

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 8.34 changed to 8.36
    • Practice expense GPCI 0.864 changed to 0.867
    • Malpractice GPCI 0.613 changed to 0.492

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $489.42changed to$487.35

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 8.35 changed to 8.34

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $486.99changed to$489.42

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $488.18changed to$486.99

    • Conversion factor 35.8228 changed to 35.7547
    • Malpractice RVU 0.40 changed to 0.45
    • Practice expense GPCI 0.865 changed to 0.864
    • Malpractice GPCI 0.687 changed to 0.613

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $487.85changed to$488.18

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 9.11 changed to 8.35
    • Malpractice RVU 0.42 changed to 0.40
    • Practice expense GPCI 0.866 changed to 0.865
    • Malpractice GPCI 0.761 changed to 0.687

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $487.85

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$485.69$383.60RVU26D
2026-07-01$485.69$383.60RVU26C
2026-04-01$485.69$383.60RVU26B
2026-01-01$485.69$383.60RVU26A
2025-10-01$462.05$423.19RVU25D
2025-07-01$462.05$423.19RVU25C
2025-04-01$462.05$423.19RVU25B
2025-01-01$462.05$423.19RVU25A
2024-10-01$477.27$435.01RVU24D
2024-07-01$477.27$435.01RVU24C
2024-04-01$477.27$435.01RVU24B
2024-03-09$477.27$435.01RVU24AR
2024-01-01$469.48$427.91RVU24A
2023-10-01$478.71$435.94RVU23D
2023-07-01$478.71$435.94RVU23C
2023-04-01$478.71$435.94RVU23B
2023-01-01$478.71$435.94RVU23A
2022-10-01$479.88$435.59RVU22D
2022-07-01$479.88$435.59RVU22C
2022-04-01$479.88$435.59RVU22B
2022-01-01$479.88$435.59RVU22A
2021-10-01$483.56$438.90RVU21D
2021-07-01$483.56$438.90RVU21C
2021-04-01$483.56$438.90RVU21B
2021-01-01$483.56$438.90RVU21A
2020-10-01$489.99$447.36RVU20D
2020-07-01$489.99$447.36RVU20C
2020-04-01$489.99$447.36RVU20B
2020-01-01$489.99$447.36RVU20A
2019-10-01$493.30$450.65RVU19D
2019-07-01$493.30$450.65RVU19C
2019-04-01$493.30$450.65RVU19B
2019-01-01$493.30$450.65RVU19A
2018-10-01$492.89$451.86RVU18D
2018-07-01$492.89$451.86RVU18C
2018-04-01$492.89$451.86RVU18B
2018-01-01$492.89$451.86RVU18AR1
2017-10-01$488.07$450.11RVU17D
2017-07-01$488.07$450.11RVU17C
2017-04-01$488.07$450.11RVU17B
2017-01-01$488.07$450.11RVU17A
2016-10-01$487.35$449.61RVU16D
2016-07-01$487.35$449.61RVU16C
2016-04-01$487.35$449.61RVU16B
2016-01-01$487.35$449.61RVU16A
2015-10-01$489.42$450.93RVU15D
2015-07-01$489.42$450.93RVU15C
2015-04-01$486.99$448.68RVU15B
2015-01-01$486.99$448.68RVU15A
2014-10-01$488.18$450.37RVU14D
2014-07-01$488.18$450.37RVU14C
2014-04-01$488.18$450.37RVU14B
2014-01-01$488.18$450.37RVU14A
2013-10-01$487.85$448.08RVU13D
2013-07-01$487.85$448.08RVU13C
2013-04-01$487.85$448.08RVU13B
2013-01-01$487.85$448.08RVU13AR

Price 66770 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

66770 billing questions

How is 66770 different from excision of an iris lesion?

66770 is for a lesion involving the ciliary body. Use the iris-lesion procedure when the excised lesion is confined to the iris.

Can 66770 be reported with a ciliary body destruction procedure?

They describe different treatment goals: 66770 removes a lesion, while ciliary body destruction procedures treat conditions such as glaucoma. Report both only when the operative documentation supports distinct services in the same session.

What postoperative care is included?

The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.

How does Medicare handle bilateral reporting?

CMS lists this as a bilateral procedure; reporting modifier 50 is paid at 150%.

Can an assistant or co-surgeon be paid for this operation?

Assistant-at-surgery payment is restricted. CMS does not permit co-surgeons or team surgery for this code.

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 66770PPRRVU2026_Oct_nonQPP.csv, line 7,394 (RVU26D)
Geographic factors for MississippiGPCI2026.csv, line 67 (RVU26D)

Open CMS sourceHow we calculate rates

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