$147.79–$171.21
77306 covers a simple teletherapy isodose plan, including its basic calculations. Report 77300 for a distinct physician-prescribed calculation rather than separately reporting a calculation included in that plan.
On this page
CMS RVU26D · Effective 2026-10-01
77300 Dosimetry calculation Medicare reimbursement rates in Virginia
A physician-prescribed radiation dose calculation, such as monitor units for a treatment beam, reported for each distinct calculation needed during treatment planning or delivery. Compare 77300 office and facility rates across CMS payment localities in Virginia.
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 77300 in Virginia?
Virginia has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
$65.97–$76.51
2 of 2 localities have a supported rate.
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 physics
About 77300: Basic radiation dosimetry calculation
A physician-prescribed radiation dose calculation, such as monitor units for a treatment beam, reported for each distinct calculation needed during treatment planning or delivery.
This service calculates a radiation dose parameter needed to deliver the physician's prescription, such as the monitor units or treatment time for a beam at a specified depth. Other examples include an off-axis factor, tissue inhomogeneity correction, or gap calculation between adjacent fields. A medical dosimetrist or medical physicist typically prepares the calculation in a hospital radiation oncology department or freestanding treatment center; the radiation oncologist reviews and approves the result.
Report a unit for each distinct physician-prescribed calculation, not automatically for each field. A later plan change supports another unit only when it requires a separately prescribed and documented calculation. Retain the prescription, calculation record, and physician approval. Calculations included in a teletherapy isodose plan or an IMRT plan are not separately reported as 77300 for that plan. CMS prices professional and technical components separately: modifier 26 identifies the physician's professional work, modifier TC identifies the equipment and staff component, and an unmodified claim represents both components.
CMS billing rules for 77300
- 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 RVU0.60 · 30%
- Practice expense (office) RVU1.37 · 68%
- Malpractice RVU0.04 · 2%
1.2M
Medicare services in 2024 · #130 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.
77300 compared with similar codes
Office rates for Virginia, from the same CMS release.
$285.45–$329.85
77307 covers a complex teletherapy isodose plan, including its basic calculations. Use 77300 for a distinct physician-prescribed calculation outside that plan.
$64.04–$73.10
77331 covers special dosimetry that measures dose, such as with a diode or thermoluminescent dosimeter. 77300 is a calculation, not a physical measurement.
$1,924.92–$2,275.45
77301 covers IMRT planning and its included dose calculations. Do not separately report 77300 for calculations included in that IMRT plan.
Compare 77300 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.
2 of 2 payment localities
Dc + Md/Va Suburbs →
Office / nonfacility
$76.51
Facility
Unavailable
Virginia →
Office / nonfacility
$65.97
Facility
Unavailable
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77300 billing questions
How many units can be reported?
Report one unit per distinct calculation prescribed by the physician, not automatically one per treatment field or beam. A later plan change supports another unit when a new calculation is prescribed and documented.
Can this be billed with an isodose plan such as 77306 or 77307?
Do not separately report calculations included in the teletherapy isodose plan. A calculation outside that plan must be separately prescribed and documented.
Is it separately reportable with IMRT planning?
No, not for calculations included in the IMRT plan reported with 77301. Do not add units of 77300 for that plan's beams.
Which modifier applies when the hospital bills the technical side?
The hospital reports its technical component with modifier TC; the physician reports the professional component with modifier 26. An entity furnishing both components reports the global service without either modifier.
What documentation supports the claim?
Keep the physician's prescription or order, a worksheet or planning-system record identifying each distinct calculation, and the physician's approval of the results.
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.
9,04477299,,Unlisted px ther rad tx plng,C,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,04577299,26,Unlisted px ther rad tx plng,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,04677299,TC,Unlisted px ther rad tx plng,C,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,04777300,,Radiation therapy dose plan,A,,0.60,1.37,,1.37,NA,0.04,2.01,2.01,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,04877300,26,Radiation therapy dose plan,A,,0.60,0.35,,0.35,,0.03,0.98,0.98,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,04977300,TC,Radiation therapy dose plan,A,,0.00,1.02,,1.02,NA,0.01,1.03,1.03,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,05077301,,Radiotherapy dose plan imrt,A,,7.79,50.20,,50.20,NA,0.70,58.69,58.69,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00