$38.01
Use 77332 for a simple treatment aid. 77333 is for an aid whose design and construction reaches the intermediate level.
On this page
CMS RVU26D · Effective 2026-10-01
77333 Radiation aid Medicare reimbursement rates in Tennessee
Reports an intermediate-complexity device designed or constructed to shape, modify, or support a patient’s external-beam radiation treatment. Compare 77333 office and facility rates across CMS payment localities in Tennessee.
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 77333 in Tennessee?
Tennessee 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
$126.81
1 of 1 localities have a supported rate.
Payment area: Tennessee
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.
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 Tennessee, from the same CMS release.
$117.42
Use 77334 when the treatment aid meets the complex level; 77333 describes intermediate complexity.
$441.34
77338 specifically identifies design of a multileaf collimator device for an IMRT plan. 77333 is the intermediate-level code for other radiation treatment aids.
Compare 77333 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
Tennessee →
Office / nonfacility
$126.81
Facility
Unavailable
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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 Tennessee.
PPRRVU2026_Oct_nonQPP.csv
9,077
- Code
- 77333
- Physician work
- 0.73
- Practice expense
- 3.35
- Malpractice
- 0.04
GPCI2026.csv
95
- Locality
- Tennessee
- Physician work
- 1.000
- Practice expense
- 0.909
- Malpractice
- 0.537
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.73 | × 1.000 | 0.7300 |
| Practice expense | 3.35 | × 0.909 | 3.0452 |
| Malpractice | 0.04 | × 0.537 | 0.0215 |
| Total RVUs | 3.7966 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Tennessee$126.81
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.73 | 1 |
| Practice expense | 3.35 | 0.909 |
| Malpractice | 0.04 | 0.537 |
(0.73 × 1 + 3.35 × 0.909 + 0.04 × 0.537) × $33.4009 = $126.81
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.
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.
9,07477332,,Radiation treatment aid(s),A,,0.44,0.75,,0.75,NA,0.03,1.22,1.22,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,07577332,26,Radiation treatment aid(s),A,,0.44,0.25,,0.25,,0.02,0.71,0.71,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,07677332,TC,Radiation treatment aid(s),A,,0.00,0.50,,0.50,NA,0.01,0.51,0.51,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,07777333,,Radiation treatment aid(s),A,,0.73,3.35,,3.35,NA,0.04,4.12,4.12,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,07877333,26,Radiation treatment aid(s),A,,0.73,0.41,,0.41,,0.03,1.17,1.17,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,07977333,TC,Radiation treatment aid(s),A,,0.00,2.94,,2.94,NA,0.01,2.95,2.95,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,08077334,,Radiation treatment aid(s),A,,1.12,2.60,,2.60,NA,0.06,3.78,3.78,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9214412,RI,01,RHODE ISLAND,1.019,1.033,0.892
9311202,SC,01,SOUTH CAROLINA,1.000,0.924,0.850
9403402,SD,02,SOUTH DAKOTA**,1.000,1.000,0.336
9510312,TN,35,TENNESSEE,1.000,0.909,0.537
9604412,TX,31,AUSTIN,1.002,1.058,0.886
9704412,TX,20,BEAUMONT,1.000,0.910,0.929
9804412,TX,09,BRAZORIA,1.008,0.991,0.780