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CPT code 77435: SBRT management, per treatment course2026 Medicare rate & RVUs in Chicago, IL

Reports the radiation oncologist’s professional management of an SBRT treatment course, including oversight for one or more targeted lesions.

CMS RVU26DEffective Oct 1, 2026One payment locality53.3K Medicare services in 2024

In Chicago, IL, Medicare pays $684.92 for 77435 in the office and $684.92 when it’s performed in a hospital or facility.

$684.92Office (non-facility)
$684.92Hospital or facility
+6.8%vs the national office rate ($641.30)

Check a contract rate as a % of Medicare · 77435 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 77435 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Chicago, IL
  2. What 77435 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 77435 covers

77435 represents the radiation oncologist’s management of a stereotactic body radiation therapy course, rather than delivery of each radiation fraction. The physician oversees treatment for one or more targeted lesions, reviews the patient’s progress and treatment information, and addresses clinical issues during the course. SBRT is commonly used for carefully targeted tumors, including lesions in the lung, liver, or spine. Radiation oncologists typically provide this service in hospital outpatient departments and freestanding radiation oncology centers.

Report 77435 once for the treatment course, not once per lesion or fraction. Documentation should identify the SBRT course and lesions treated and support the physician’s management of the patient during treatment. CMS classifies 77435 as professional-component-only: it represents the physician’s interpretation and report, while a separate code covers the technical service. The SBRT delivery service is reported separately with 77373 when appropriate; 77435 is not the fraction-by-fraction delivery code.

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 Chicago, IL compares for 77435

Across 109 of 109 payment localities, the office rate for 77435 runs from $594.79 in Arkansas to $835.29 in Alaska. Chicago, IL pays $684.92. The RVUs are the same everywhere; the geographic indexes change the dollars.

77435 in Chicago, IL vs other payment areas
  1. Chicago, IL · this page$684.92
  2. East St. Louis, IL · Illinois$654.53−$30.39
  3. Rest of Illinois · Illinois$639.10−$45.82
  4. Suburban Chicago, IL · Illinois$673.78−$11.14
  5. Los Angeles, CA · California$687.83+$2.91
  6. Washington, DC area · District of Columbia$705.53+$20.61
  7. Miami, FL · Florida$697.47+$12.55

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

Every other payment area

77435 in every other Medicare payment locality
Payment localityOfficeFacility
Manhattan, NYNew York$720.34$720.34
AlaskaAlaska$835.29$835.29
AlabamaAlabama$599.95$599.95
ArkansasArkansas$594.79$594.79
ArizonaArizona$629.92$629.92
Bakersfield, CACalifornia$658.14$658.14
Chico, CACalifornia$655.12$655.12
El Centro, CACalifornia$655.28$655.28

77435 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.

$594.79

$835.29

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

View every state and territory as a table
77435 office rate range by state
State / territoryOffice rate rangeLocalities
AK$835.291
AL$599.951
AR$594.791
AZ$629.921
CA$655.12–$768.6129
CO$653.551
CT$672.741
DC$705.531
DE$637.441
FL$646.89–$697.473
GA$622.99–$652.222
GU$659.061
HI$659.061
IA$603.721
ID$607.171
IL$639.10–$684.924
IN$609.141
KS$604.541
KY$613.811
LA$614.23–$632.252
MA$653.12–$697.242
MD$645.33–$705.533
ME$611.75–$627.942
MI$625.76–$654.532
MN$626.161
MO$609.57–$630.603
MS$602.121
MT$641.241
NC$615.191
ND$623.041
NE$604.931
NH$646.651
NJ$680.35–$703.592
NM$628.871
NV$636.391
NY$620.96–$734.725
OH$622.041
OK$610.461
OR$631.27–$664.492
PA$621.23–$663.372
PR$643.301
RI$652.721
SC$619.651
SD$620.891
TN$606.671
TX$618.94–$654.378
UT$624.721
VA$628.45–$705.532
VI$643.301
VT$623.881
WA$650.86–$705.872
WI$610.621
WV$625.181
WY$633.311

See 77435 in every payment locality

How the 77435 rate is calculated

Each of 77435’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 · 77435

RVUs × geographic indexes × conversion factor

Office or facility?

Work11.57

11.57 RVUs× 1.000 GPCI

Practice expense6.71

6.71 RVUs× 1.000 GPCI

Malpractice0.92

0.92 RVUs× 1.000 GPCI

Adjusted RVUs

19.2000

Conversion factor

$33.4009

Medicare rate

$641.30

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

The exact Chicago, IL inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

9,107

Code
77435
Physician work
11.57
Practice expense
6.71
Malpractice
0.92

GPCI2026.csv

48

Locality
Chicago, IL
Physician work
1.007
Practice expense
1.005
Malpractice
2.295
Office calculation for 77435 in Chicago, IL
ComponentRVULocality factorAdjusted
Physician work11.57× 1.00711.6510
Practice expense6.71× 1.0056.7435
Malpractice0.92× 2.2952.1114
Total RVUs20.5059
Conversion factor× 33.4009

Office rate, Chicago, IL$684.92

Office: (11.57 × 1.007 + 6.71 × 1.005 + 0.92 × 2.295) × $33.4009 = $684.92

Facility: (11.57 × 1.007 + 6.71 × 1.005 + 0.92 × 2.295) × $33.4009 = $684.92

Open 77435 in the RVU calculator

Payment rules and modifiers for 77435

The CMS indicators that decide how 77435 is paid alongside other services.

CMS payment indicators · 77435

SBRT management, per treatment course

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical2Professional component only.

Codes related to 77435

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

Codes related to 77435
CodeHow it relatesOffice range, Chicago, IL
Includes component
77373SBRT delivery, per fraction, up to fiveSeparate SBRT delivery service, reported by fraction; 77435 represents physician course management.$994.31
Used instead
77432Stereotactic management, cranial, single-session courseManagement code for a complete single-session stereotactic treatment of cranial lesions.$453.11
77427Radiation treatment management, per five treatment fractionsRadiation management reported in five-treatment units rather than for an SBRT course.$207.80

How 77435 has changed in Chicago, IL

77435 · Office / nonfacility

$684.92

Effective 2026-10-01

The base rate is $17.51 higher than on 2025-10-01, moving from $667.41 to $684.92 (2.6%).

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

    $667.41changed to$684.92

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 11.87 changed to 11.57
    • Practice expense RVU 6.67 changed to 6.71
    • Practice expense GPCI 1.023 changed to 1.005
    • Malpractice GPCI 2.018 changed to 2.295

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $677.60changed to$667.41

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 6.34 changed to 6.67
    • Malpractice RVU 0.95 changed to 0.92

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $666.54changed to$677.60

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $686.72changed to$666.54

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 6.31 changed to 6.34
    • Malpractice RVU 0.91 changed to 0.95
    • Work GPCI 1.009 changed to 1.007
    • Practice expense GPCI 1.033 changed to 1.023
    • Malpractice GPCI 1.945 changed to 2.018

  5. January 1, 2023

    RVU23A

    $689.33changed to$686.72

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 5.99 changed to 6.31
    • Malpractice RVU 0.89 changed to 0.91
    • Work GPCI 1.011 changed to 1.009
    • Practice expense GPCI 1.044 changed to 1.033
    • Malpractice GPCI 1.871 changed to 1.945

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $686.53changed to$689.33

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 5.81 changed to 5.99
    • Malpractice RVU 0.86 changed to 0.89

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $701.95changed to$686.53

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 5.64 changed to 5.81
    • Malpractice RVU 0.85 changed to 0.86
    • Work GPCI 1.009 changed to 1.011
    • Practice expense GPCI 1.039 changed to 1.044
    • Malpractice GPCI 1.898 changed to 1.871

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $692.95changed to$701.95

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 5.46 changed to 5.64
    • Malpractice RVU 0.84 changed to 0.85
    • Work GPCI 1.008 changed to 1.009
    • Practice expense GPCI 1.034 changed to 1.039
    • Malpractice GPCI 1.925 changed to 1.898

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $686.92changed to$692.95

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 5.30 changed to 5.46
    • Malpractice RVU 0.85 changed to 0.84

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $683.49changed to$686.92

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 5.17 changed to 5.30
    • Work GPCI 1.012 changed to 1.008
    • Practice expense GPCI 1.036 changed to 1.034
    • Malpractice GPCI 1.972 changed to 1.925

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $682.58changed to$683.49

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 5.08 changed to 5.17
    • Malpractice RVU 0.86 changed to 0.85
    • Work GPCI 1.016 changed to 1.012
    • Practice expense GPCI 1.037 changed to 1.036
    • Malpractice GPCI 2.019 changed to 1.972

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $682.30changed to$682.58

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 4.87 changed to 5.08
    • Malpractice RVU 0.93 changed to 0.86

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $678.90changed to$682.30

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $686.83changed to$678.90

    • Conversion factor 35.8228 changed to 35.7547
    • Malpractice RVU 0.95 changed to 0.93
    • Work GPCI 1.023 changed to 1.016
    • Practice expense GPCI 1.044 changed to 1.037
    • Malpractice GPCI 2.048 changed to 2.019

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $662.57changed to$686.83

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 4.94 changed to 4.87
    • Malpractice RVU 0.99 changed to 0.95
    • Work GPCI 1.030 changed to 1.023
    • Practice expense GPCI 1.051 changed to 1.044
    • Malpractice GPCI 2.077 changed to 2.048

    Held through RVU14B, RVU14C, RVU14D.

  16. October 1, 2013

    RVU13D

    No ratechanged to$662.57

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$684.92$684.92RVU26D
2026-07-01$684.92$684.92RVU26C
2026-04-01$684.92$684.92RVU26B
2026-01-01$684.92$684.92RVU26A
2025-10-01$667.41$667.41RVU25D
2025-07-01$667.41$667.41RVU25C
2025-04-01$667.41$667.41RVU25B
2025-01-01$667.41$667.41RVU25A
2024-10-01$677.60$677.60RVU24D
2024-07-01$677.60$677.60RVU24C
2024-04-01$677.60$677.60RVU24B
2024-03-09$677.60$677.60RVU24AR
2024-01-01$666.54$666.54RVU24A
2023-10-01$686.72$686.72RVU23D
2023-07-01$686.72$686.72RVU23C
2023-04-01$686.72$686.72RVU23B
2023-01-01$686.72$686.72RVU23A
2022-10-01$689.33$689.33RVU22D
2022-07-01$689.33$689.33RVU22C
2022-04-01$689.33$689.33RVU22B
2022-01-01$689.33$689.33RVU22A
2021-10-01$686.53$686.53RVU21D
2021-07-01$686.53$686.53RVU21C
2021-04-01$686.53$686.53RVU21B
2021-01-01$686.53$686.53RVU21A
2020-10-01$701.95$701.95RVU20D
2020-07-01$701.95$701.95RVU20C
2020-04-01$701.95$701.95RVU20B
2020-01-01$701.95$701.95RVU20A
2019-10-01$692.95$692.95RVU19D
2019-07-01$692.95$692.95RVU19C
2019-04-01$692.95$692.95RVU19B
2019-01-01$692.95$692.95RVU19A
2018-10-01$686.92$686.92RVU18D
2018-07-01$686.92$686.92RVU18C
2018-04-01$686.92$686.92RVU18B
2018-01-01$686.92$686.92RVU18AR1
2017-10-01$683.49$683.49RVU17D
2017-07-01$683.49$683.49RVU17C
2017-04-01$683.49$683.49RVU17B
2017-01-01$683.49$683.49RVU17A
2016-10-01$682.58$682.58RVU16D
2016-07-01$682.58$682.58RVU16C
2016-04-01$682.58$682.58RVU16B
2016-01-01$682.58$682.58RVU16A
2015-10-01$682.30$681.92RVU15D
2015-07-01$682.30$681.92RVU15C
2015-04-01$678.90$678.53RVU15B
2015-01-01$678.90$678.53RVU15A
2014-10-01$686.83$686.83RVU14D
2014-07-01$686.83$686.83RVU14C
2014-04-01$686.83$686.83RVU14B
2014-01-01$686.83$686.83RVU14A
2013-10-01$662.57$662.57RVU13D
2013-07-01Rate data unavailableRate data unavailableRVU13C
2013-04-01Rate data unavailableRate data unavailableRVU13B
2013-01-01Rate data unavailableRate data unavailableRVU13AR

Price 77435 for an earlier date of service

Where the Chicago, IL rate applies

Chicago, IL is a Medicare payment area, not a city. Our Census mapping connects it to 137 cities and communities in Illinois. Some span more than one payment area; confirm with the service ZIP.

Browse all communities in Illinois

77435 billing questions

Is 77435 reported per fraction or per treatment course?

Report it for the SBRT treatment course, not for each delivery fraction. The number of lesions treated does not create additional units of 77435.

How does 77435 differ from 77373?

77435 represents the radiation oncologist’s professional management of the course. 77373 reports SBRT treatment delivery by fraction.

Should modifier 26 be appended to 77435?

No. CMS identifies 77435 as professional-component-only, so modifier 26 is not needed to designate its professional service. The technical service is reported separately.

Can 77435 be reported for a single-session cranial stereotactic treatment?

Compare the clinical service with 77432, which describes management of a complete one-session stereotactic treatment for cranial lesions. 77435 is for SBRT course management.

When would 77427 be considered instead?

77427 describes radiation treatment management in a five-treatment unit for conventional radiation therapy. Use 77435 for management of an SBRT course, not routine management counted in five-treatment units.

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 77435PPRRVU2026_Oct_nonQPP.csv, line 9,107 (RVU26D)
Geographic factors for Chicago, ILGPCI2026.csv, line 48 (RVU26D)

Open CMS sourceHow we calculate rates

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