FeeBase
Log inGet started
Menu
On this page

CMS RVU26D · Effective 2026-10-01

77333 in Modesto

Office / nonfacility

$148.15

Base rate per service

Facility setting

Not available in this setting

Base rate per service

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.

Radiation oncology

About 77333: Intermediate radiation treatment aid

Reports an intermediate-complexity device designed or constructed to shape, modify, or support a patient’s external-beam radiation treatment.

This code covers the design and construction of a radiation treatment aid used to shape or modify the beam or help position the patient reproducibly. Examples of treatment aids across this code family include shielding blocks, bolus, and immobilization devices. Radiation oncologists, dosimetrists, and radiation therapy teams use these devices in external-beam treatment planning and delivery. The intermediate level is selected by the device’s design and construction complexity, not simply by the diagnosis or treatment site.

Choose this level when the documented device is more involved than a simple aid but does not meet the complex level. Record what was designed or fabricated and how it supports treatment; report distinct devices at the applicable level when separately documented. CMS recognizes professional and technical components: modifier 26 identifies the professional component, modifier TC the technical component involving equipment and staff, and no modifier represents the global service.

CMS billing rules for 77333

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 RVU0.73 · 18%
  • Practice expense (office) RVU3.35 · 81%
  • Malpractice RVU0.04 · 1%

13.8K

Medicare services in 2024 · #1299 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.

77333 compared with similar codes

Office rates for Modesto, from the same CMS release.

77332

Treatment aid

Simple device

$42.94

Use 77332 for a simple treatment aid. 77333 is for an aid whose design and construction reaches the intermediate level.

77334

Radiation treatment device

Complex device

$134.30

Use 77334 when the treatment aid meets the complex level; 77333 describes intermediate complexity.

77338

MLC design

Per IMRT plan

$504.85

77338 specifically identifies design of a multileaf collimator device for an IMRT plan. 77333 is the intermediate-level code for other radiation treatment aids.

The same code, a different location

How does Modesto compare?

In Bakersfield, the office rate for 77333 is $148.29—$0.14 higher than the $148.15 rate in Modesto. Both use the same code, release and participation basis.

77333 across payment areas

Same release and payment basis · bars start at $0

  1. Modesto · This locality

    $148.15

  2. Bakersfield

    $148.29

    $0.14 higher than Modesto

  3. Chico

    $148.15

    The same base rate than Modesto

  4. El Centro

    $148.15

    The same base rate than Modesto

  5. Fresno

    $148.15

    The same base rate than Modesto

  6. Hanford-Corcoran

    $148.15

    The same base rate than Modesto

  7. Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty)

    $158.64

    $10.49 higher than Modesto

Other payment areas listed in California appear first, followed by selected cross-country examples. The chart compares amounts, not distance.

Across 109 of 109 CMS payment localities with a supported office rate, 77333 ranges from $121.19 in Arkansas to $189.13 in San Jose-Sunnyvale-Santa Clara (San Benito Cnty). This is a geographic range, not an average.

The code’s RVUs stay the same in these comparisons. Geographic adjustments to work, practice expense and malpractice change the dollar amount. A city name alone may not identify the payment area for a service address.

Compare all 108 other payment areas

  • Madera

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Merced

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Napa

    California · 77333

    Office

    $174.07

    Facility

    Unavailable

    $25.92 higher than Modesto for the office setting.

  • Oxnard-Thousand Oaks-Ventura

    California · 77333

    Office

    $158.16

    Facility

    Unavailable

    $10.01 higher than Modesto for the office setting.

  • Redding

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Rest Of California

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Riverside-San Bernardino-Ontario

    California · 77333

    Office

    $148.60

    Facility

    Unavailable

    $0.45 higher than Modesto for the office setting.

  • Sacramento-Roseville-Folsom

    California · 77333

    Office

    $156.11

    Facility

    Unavailable

    $7.96 higher than Modesto for the office setting.

  • Salinas

    California · 77333

    Office

    $155.54

    Facility

    Unavailable

    $7.39 higher than Modesto for the office setting.

  • San Diego-Chula Vista-Carlsbad

    California · 77333

    Office

    $159.66

    Facility

    Unavailable

    $11.51 higher than Modesto for the office setting.

  • San Francisco-Oakland-Berkeley (Marin Cnty)

    California · 77333

    Office

    $185.08

    Facility

    Unavailable

    $36.93 higher than Modesto for the office setting.

  • San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)

    California · 77333

    Office

    $185.04

    Facility

    Unavailable

    $36.89 higher than Modesto for the office setting.

  • San Jose-Sunnyvale-Santa Clara (San Benito Cnty)

    California · 77333

    Office

    $189.13

    Facility

    Unavailable

    $40.98 higher than Modesto for the office setting.

  • San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)

    California · 77333

    Office

    $188.94

    Facility

    Unavailable

    $40.79 higher than Modesto for the office setting.

  • San Luis Obispo-Paso Robles

    California · 77333

    Office

    $152.96

    Facility

    Unavailable

    $4.81 higher than Modesto for the office setting.

  • Santa Cruz-Watsonville

    California · 77333

    Office

    $161.56

    Facility

    Unavailable

    $13.41 higher than Modesto for the office setting.

  • Santa Maria-Santa Barbara

    California · 77333

    Office

    $156.25

    Facility

    Unavailable

    $8.10 higher than Modesto for the office setting.

  • Santa Rosa-Petaluma

    California · 77333

    Office

    $163.23

    Facility

    Unavailable

    $15.08 higher than Modesto for the office setting.

  • Stockton

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Vallejo

    California · 77333

    Office

    $174.01

    Facility

    Unavailable

    $25.86 higher than Modesto for the office setting.

  • Visalia

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Yuba City

    California · 77333

    Office

    $148.15

    Facility

    Unavailable

    The same base rate than Modesto for the office setting.

  • Dc + Md/Va Suburbs

    District of Columbia · 77333

    Office

    $159.00

    Facility

    Unavailable

    $10.85 higher than Modesto for the office setting.

  • Miami

    Florida · 77333

    Office

    $144.24

    Facility

    Unavailable

    $3.91 lower than Modesto for the office setting.

  • Chicago

    Illinois · 77333

    Office

    $140.07

    Facility

    Unavailable

    $8.08 lower than Modesto for the office setting.

  • Manhattan

    New York · 77333

    Office

    $158.08

    Facility

    Unavailable

    $9.93 higher than Modesto for the office setting.

  • Alaska*

    Alaska · 77333

    Office

    $156.48

    Facility

    Unavailable

    $8.33 higher than Modesto for the office setting.

  • Alabama

    Alabama · 77333

    Office

    $123.05

    Facility

    Unavailable

    $25.10 lower than Modesto for the office setting.

  • Arkansas

    Arkansas · 77333

    Office

    $121.19

    Facility

    Unavailable

    $26.96 lower than Modesto for the office setting.

  • Arizona

    Arizona · 77333

    Office

    $133.95

    Facility

    Unavailable

    $14.20 lower than Modesto for the office setting.

  • Colorado

    Colorado · 77333

    Office

    $144.77

    Facility

    Unavailable

    $3.38 lower than Modesto for the office setting.

  • Connecticut

    Connecticut · 77333

    Office

    $147.00

    Facility

    Unavailable

    $1.15 lower than Modesto for the office setting.

  • Delaware

    Delaware · 77333

    Office

    $136.26

    Facility

    Unavailable

    $11.89 lower than Modesto for the office setting.

  • Fort Lauderdale

    Florida · 77333

    Office

    $140.15

    Facility

    Unavailable

    $8.00 lower than Modesto for the office setting.

  • Rest Of Florida

    Florida · 77333

    Office

    $133.36

    Facility

    Unavailable

    $14.79 lower than Modesto for the office setting.

  • Atlanta

    Georgia · 77333

    Office

    $139.74

    Facility

    Unavailable

    $8.41 lower than Modesto for the office setting.

  • Rest Of Georgia

    Georgia · 77333

    Office

    $125.78

    Facility

    Unavailable

    $22.37 lower than Modesto for the office setting.

  • Hawaii, Guam

    Hawaii · 77333

    Office

    $152.38

    Facility

    Unavailable

    $4.23 higher than Modesto for the office setting.

  • Iowa

    Iowa · 77333

    Office

    $127.30

    Facility

    Unavailable

    $20.85 lower than Modesto for the office setting.

  • Idaho

    Idaho · 77333

    Office

    $127.96

    Facility

    Unavailable

    $20.19 lower than Modesto for the office setting.

  • East St. Louis

    Illinois · 77333

    Office

    $130.02

    Facility

    Unavailable

    $18.13 lower than Modesto for the office setting.

  • Rest Of Illinois

    Illinois · 77333

    Office

    $128.63

    Facility

    Unavailable

    $19.52 lower than Modesto for the office setting.

  • Suburban Chicago

    Illinois · 77333

    Office

    $141.83

    Facility

    Unavailable

    $6.32 lower than Modesto for the office setting.

  • Indiana

    Indiana · 77333

    Office

    $128.76

    Facility

    Unavailable

    $19.39 lower than Modesto for the office setting.

  • Kansas

    Kansas · 77333

    Office

    $126.21

    Facility

    Unavailable

    $21.94 lower than Modesto for the office setting.

  • Kentucky

    Kentucky · 77333

    Office

    $125.08

    Facility

    Unavailable

    $23.07 lower than Modesto for the office setting.

  • New Orleans

    Louisiana · 77333

    Office

    $131.19

    Facility

    Unavailable

    $16.96 lower than Modesto for the office setting.

  • Rest Of Louisiana

    Louisiana · 77333

    Office

    $124.69

    Facility

    Unavailable

    $23.46 lower than Modesto for the office setting.

  • Metropolitan Boston

    Massachusetts · 77333

    Office

    $160.17

    Facility

    Unavailable

    $12.02 higher than Modesto for the office setting.

  • Rest Of Massachusetts

    Massachusetts · 77333

    Office

    $143.66

    Facility

    Unavailable

    $4.49 lower than Modesto for the office setting.

  • Baltimore/Surr. Cntys

    Maryland · 77333

    Office

    $146.49

    Facility

    Unavailable

    $1.66 lower than Modesto for the office setting.

  • Rest Of Maryland

    Maryland · 77333

    Office

    $139.09

    Facility

    Unavailable

    $9.06 lower than Modesto for the office setting.

  • Rest Of Maine

    Maine · 77333

    Office

    $128.16

    Facility

    Unavailable

    $19.99 lower than Modesto for the office setting.

  • Southern Maine

    Maine · 77333

    Office

    $136.11

    Facility

    Unavailable

    $12.04 lower than Modesto for the office setting.

  • Detroit

    Michigan · 77333

    Office

    $134.61

    Facility

    Unavailable

    $13.54 lower than Modesto for the office setting.

  • Rest Of Michigan

    Michigan · 77333

    Office

    $128.05

    Facility

    Unavailable

    $20.10 lower than Modesto for the office setting.

  • Minnesota

    Minnesota · 77333

    Office

    $139.92

    Facility

    Unavailable

    $8.23 lower than Modesto for the office setting.

  • Metropolitan Kansas City

    Missouri · 77333

    Office

    $130.76

    Facility

    Unavailable

    $17.39 lower than Modesto for the office setting.

  • Metropolitan St. Louis

    Missouri · 77333

    Office

    $132.24

    Facility

    Unavailable

    $15.91 lower than Modesto for the office setting.

  • Rest Of Missouri

    Missouri · 77333

    Office

    $122.14

    Facility

    Unavailable

    $26.01 lower than Modesto for the office setting.

  • Mississippi

    Mississippi · 77333

    Office

    $121.71

    Facility

    Unavailable

    $26.44 lower than Modesto for the office setting.

  • Montana**

    Montana · 77333

    Office

    $137.61

    Facility

    Unavailable

    $10.54 lower than Modesto for the office setting.

  • North Carolina

    North Carolina · 77333

    Office

    $129.63

    Facility

    Unavailable

    $18.52 lower than Modesto for the office setting.

  • North Dakota**

    North Dakota · 77333

    Office

    $136.82

    Facility

    Unavailable

    $11.33 lower than Modesto for the office setting.

  • Nebraska

    Nebraska · 77333

    Office

    $128.16

    Facility

    Unavailable

    $19.99 lower than Modesto for the office setting.

  • New Hampshire

    New Hampshire · 77333

    Office

    $142.03

    Facility

    Unavailable

    $6.12 lower than Modesto for the office setting.

  • Northern Nj

    New Jersey · 77333

    Office

    $157.14

    Facility

    Unavailable

    $8.99 higher than Modesto for the office setting.

  • Rest Of New Jersey

    New Jersey · 77333

    Office

    $149.01

    Facility

    Unavailable

    $0.86 higher than Modesto for the office setting.

  • New Mexico

    New Mexico · 77333

    Office

    $128.59

    Facility

    Unavailable

    $19.56 lower than Modesto for the office setting.

  • Nevada**

    Nevada · 77333

    Office

    $137.50

    Facility

    Unavailable

    $10.65 lower than Modesto for the office setting.

  • Nyc Suburbs/Long Island

    New York · 77333

    Office

    $161.46

    Facility

    Unavailable

    $13.31 higher than Modesto for the office setting.

  • Poughkpsie/N Nyc Suburbs

    New York · 77333

    Office

    $149.62

    Facility

    Unavailable

    $1.47 higher than Modesto for the office setting.

  • Queens

    New York · 77333

    Office

    $160.13

    Facility

    Unavailable

    $11.98 higher than Modesto for the office setting.

  • Rest Of New York

    New York · 77333

    Office

    $131.62

    Facility

    Unavailable

    $16.53 lower than Modesto for the office setting.

  • Ohio

    Ohio · 77333

    Office

    $127.89

    Facility

    Unavailable

    $20.26 lower than Modesto for the office setting.

  • Oklahoma

    Oklahoma · 77333

    Office

    $125.34

    Facility

    Unavailable

    $22.81 lower than Modesto for the office setting.

  • Portland

    Oregon · 77333

    Office

    $150.08

    Facility

    Unavailable

    $1.93 higher than Modesto for the office setting.

  • Rest Of Oregon

    Oregon · 77333

    Office

    $136.77

    Facility

    Unavailable

    $11.38 lower than Modesto for the office setting.

  • Metropolitan Philadelphia

    Pennsylvania · 77333

    Office

    $142.90

    Facility

    Unavailable

    $5.25 lower than Modesto for the office setting.

  • Rest Of Pennsylvania

    Pennsylvania · 77333

    Office

    $128.36

    Facility

    Unavailable

    $19.79 lower than Modesto for the office setting.

  • Puerto Rico

    Puerto Rico · 77333

    Office

    $138.82

    Facility

    Unavailable

    $9.33 lower than Modesto for the office setting.

  • Rhode Island

    Rhode Island · 77333

    Office

    $141.62

    Facility

    Unavailable

    $6.53 lower than Modesto for the office setting.

  • South Carolina

    South Carolina · 77333

    Office

    $128.91

    Facility

    Unavailable

    $19.24 lower than Modesto for the office setting.

  • South Dakota**

    South Dakota · 77333

    Office

    $136.72

    Facility

    Unavailable

    $11.43 lower than Modesto for the office setting.

  • Tennessee

    Tennessee · 77333

    Office

    $126.81

    Facility

    Unavailable

    $21.34 lower than Modesto for the office setting.

  • Austin

    Texas · 77333

    Office

    $144.00

    Facility

    Unavailable

    $4.15 lower than Modesto for the office setting.

  • Beaumont

    Texas · 77333

    Office

    $127.45

    Facility

    Unavailable

    $20.70 lower than Modesto for the office setting.

  • Brazoria

    Texas · 77333

    Office

    $136.51

    Facility

    Unavailable

    $11.64 lower than Modesto for the office setting.

  • Dallas

    Texas · 77333

    Office

    $137.19

    Facility

    Unavailable

    $10.96 lower than Modesto for the office setting.

  • Fort Worth

    Texas · 77333

    Office

    $136.09

    Facility

    Unavailable

    $12.06 lower than Modesto for the office setting.

  • Galveston

    Texas · 77333

    Office

    $136.79

    Facility

    Unavailable

    $11.36 lower than Modesto for the office setting.

  • Houston

    Texas · 77333

    Office

    $137.53

    Facility

    Unavailable

    $10.62 lower than Modesto for the office setting.

  • Rest Of Texas

    Texas · 77333

    Office

    $131.78

    Facility

    Unavailable

    $16.37 lower than Modesto for the office setting.

  • Utah

    Utah · 77333

    Office

    $130.76

    Facility

    Unavailable

    $17.39 lower than Modesto for the office setting.

  • Virginia

    Virginia · 77333

    Office

    $135.32

    Facility

    Unavailable

    $12.83 lower than Modesto for the office setting.

  • Virgin Islands

    United States Virgin Islands · 77333

    Office

    $138.82

    Facility

    Unavailable

    $9.33 lower than Modesto for the office setting.

  • Vermont

    Vermont · 77333

    Office

    $135.83

    Facility

    Unavailable

    $12.32 lower than Modesto for the office setting.

  • Rest Of Washington

    Washington · 77333

    Office

    $143.54

    Facility

    Unavailable

    $4.61 lower than Modesto for the office setting.

  • Seattle (King Cnty)

    Washington · 77333

    Office

    $163.99

    Facility

    Unavailable

    $15.84 higher than Modesto for the office setting.

  • Wisconsin

    Wisconsin · 77333

    Office

    $131.99

    Facility

    Unavailable

    $16.16 lower than Modesto for the office setting.

  • West Virginia

    West Virginia · 77333

    Office

    $123.53

    Facility

    Unavailable

    $24.62 lower than Modesto for the office setting.

  • Wyoming**

    Wyoming · 77333

    Office

    $137.26

    Facility

    Unavailable

    $10.89 lower than Modesto for the office setting.

See how rates vary across the country

77333 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.

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.

$121.19

$168.64

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

View all state and territory rates as a table
State / territoryRate rangeLocalities
AK$156.481
AL$123.051
AR$121.191
AZ$133.951
CA$148.15–$189.1329
CO$144.771
CT$147.001
DC$159.001
DE$136.261
FL$133.36–$144.243
GA$125.78–$139.742
GU$152.381
HI$152.381
IA$127.301
ID$127.961
IL$128.63–$141.834
IN$128.761
KS$126.211
KY$125.081
LA$124.69–$131.192
MA$143.66–$160.172
MD$139.09–$159.003
ME$128.16–$136.112
MI$128.05–$134.612
MN$139.921
MO$122.14–$132.243
MS$121.711
MT$137.611
NC$129.631
ND$136.821
NE$128.161
NH$142.031
NJ$149.01–$157.142
NM$128.591
NV$137.501
NY$131.62–$161.465
OH$127.891
OK$125.341
OR$136.77–$150.082
PA$128.36–$142.902
PR$138.821
RI$141.621
SC$128.911
SD$136.721
TN$126.811
TX$127.45–$144.008
UT$130.761
VA$135.32–$159.002
VI$138.821
VT$135.831
WA$143.54–$163.992
WI$131.991
WV$123.531
WY$137.261

Explore 77333 on the national rate map →

Where does this rate apply?

Modesto is a Medicare payment area. Our Census mapping connects it to 33 cities and communities in California, including the examples shown here.

Some communities span more than one payment area. Follow a city link to compare all of its mapped areas, or check the service-location ZIP above for an address-level starting point.

Browse all communities in California →

Use this rate

What is a percentage of Medicare worth?

Turn a percentage into dollars for 77333 in Modesto. This uses the base rate on this page, so the locality and release stay consistent.

Reference amount per service

$162.97

$148.15 × 110% = $162.97

A contract may specify another Medicare year or additional adjustments. This is percentage arithmetic on the displayed base rate, not a claim adjudication.

Working with a whole code list?

Compare an offer across your annual code mix, including an older Medicare schedule or flat per-code rates.

Compare your contract offer →

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 77333 in Modesto.

PPRRVU2026_Oct_nonQPP.csv

9,077

Code
77333
Physician work
0.73
Practice expense
3.35
Malpractice
0.04

GPCI2026.csv

16

Locality
Modesto
Physician work
1.017
Practice expense
1.096
Malpractice
0.536
Office / nonfacility calculation for 77333 in Modesto
ComponentRVULocality factorAdjusted
Physician work0.73× 1.0170.7424
Practice expense3.35× 1.0963.6716
Malpractice0.04× 0.5360.0214
Total RVUs4.4355
Conversion factor× 33.4009

Office / nonfacility rate, Modesto$148.15

Values as parsed from CMS release RVU26D, effective 2026-10-01. The amount is rounded to the nearest cent only at the end.

Open 77333 in the RVU calculator →

Explore RVUs, geographic factors and the full formula

Office / nonfacility

Office / nonfacility calculation inputs
ComponentRVULocal GPCI
Work0.731.017
Practice expense3.351.096
Malpractice0.040.536

(0.73 × 1.017 + 3.35 × 1.096 + 0.04 × 0.536) × $33.4009 = $148.15

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.

How this rate has changed

77333 · Office / nonfacility

$148.15

Effective 2026-10-01

The base rate is $5.45 higher than on 2025-10-01, moving from $142.70 to $148.15 (3.8%).

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

    $142.70changed to$148.15

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.75 changed to 0.73
    • Practice expense RVU 3.32 changed to 3.35
    • Work GPCI 1.014 changed to 1.017
    • Practice expense GPCI 1.093 changed to 1.096
    • Malpractice GPCI 0.560 changed to 0.536

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    Earliest loaded release: $142.70

    Held through RVU25B, RVU25C, RVU25D.

Explore release dates and calculate this code in an earlier period →

Each row uses the accepted CMS release effective on that date and the same contractor and locality identifiers. Missing rates stay visible. Historical boundaries may differ; verify the service address for an older claim.

Inspect every release and its CMS source
Effective fromOffice / nonfacilityFacilityCMS release
2026-10-01$148.15Not available in this settingRVU26D
2026-07-01$148.15Not available in this settingRVU26C
2026-04-01$148.15Not available in this settingRVU26B
2026-01-01$148.15Not available in this settingRVU26A
2025-10-01$142.70Not available in this settingRVU25D
2025-07-01$142.70Not available in this settingRVU25C
2025-04-01$142.70Not available in this settingRVU25B
2025-01-01$142.70Not available in this settingRVU25A

77333 billing questions

How does 77333 differ from 77332 and 77334?

These codes distinguish treatment aids by design and construction complexity. Use 77332 for the simple level, 77333 for the intermediate level, and 77334 for the complex level.

What documentation supports 77333?

Document the particular aid designed or constructed and its role in shaping the radiation beam or supporting reproducible patient positioning. The record should support the intermediate complexity level.

Can 77333 be reported with modifier 26 or TC?

CMS recognizes separately priced professional and technical components. Modifier 26 identifies the professional component, TC identifies the equipment-and-staff component, and billing without either modifier represents the global service.

How should units be determined?

Base reporting on each distinct treatment aid furnished and documented, rather than the number of treatment fractions or beam angles. Select the appropriate complexity level for each aid.

Is dose calculation included in 77333?

77333 represents the treatment aid, while 77300 represents a radiation therapy dose calculation. Report both only when the record supports each as a distinct 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.

RVUs for 77333PPRRVU2026_Oct_nonQPP.csv, line 9,077 (RVU26D)
Geographic factors for ModestoGPCI2026.csv, line 16 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet