CPT code 77370: Radiation physics consult, unusual treatment circumstances2026 Medicare rate & RVUs in Florida
A medical physicist performs a physician-requested, case-specific analysis or measurement for unusual radiation treatment circumstances beyond routine planning and review.
Medicare pays $147.07–$164.62 for 77370 in the office in Florida, from Rest of Florida to Miami, FL. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 77370 covers
A radiation oncologist may request a medical physicist’s focused analysis when a patient’s treatment presents unusual technical circumstances. The physicist may perform case-specific calculations or measurements and assess how those findings affect the treatment setup or delivery. This work is distinct from routine dose planning and ongoing physics review during a course of radiation therapy.
Report 77370 for the special technical consultation, supported by the physician’s request and a written physicist report describing the unusual circumstance, work performed, and findings. The record should show why routine planning or review was insufficient. CMS classifies this as a technical-component-only code; a separate code covers interpretation. The fee schedule assigns no physician work RVUs to this code, reflecting that its reported service is the technical physics work rather than interpretation.
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.
Where 77370 pays more and less in Florida
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$147.07 to $164.62
| Payment locality | Office | Facility |
|---|---|---|
| Fort Lauderdale, FL | $156.92 | Unavailable |
| Miami, FL | $164.62 | Unavailable |
| Rest of Florida | $147.07 | Unavailable |
How the 77370 rate is calculated
Each of 77370’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 · 77370
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense4.37
4.37 RVUs× 1.000 GPCI
Malpractice0.15
0.15 RVUs× 1.000 GPCI
Adjusted RVUs
4.5200
Conversion factor
$33.4009
Medicare rate
$150.97
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 77370
The CMS indicators that decide how 77370 is paid alongside other services.
CMS payment indicators · 77370
Radiation physics consult, unusual treatment circumstances
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 3 | Technical component only. |
77370 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 77336Physics reviewPer week of therapy
- Choose 77370 for a special, physician-requested analysis tied to unusual treatment circumstances. Choose 77336 for ongoing physics review during the treatment course.
- 77300Dosimetry calculationBasic, per calculation
- 77300 represents radiation dose calculation work. 77370 represents a broader special physics consultation when unusual circumstances call for focused analysis or measurement.
- 77301IMRT planningDose optimization and volume analysis
- 77301 is for IMRT treatment planning. It does not represent the separate special physics consultation that may be needed for unusual technical circumstances.
77370 billing questions
How does 77370 differ from 77336?
Use 77370 for a physician-requested, case-specific physics analysis prompted by unusual treatment circumstances. Code 77336 represents ongoing physics review during a radiation treatment course.
Can routine dose calculation be reported as 77370?
No. A routine dose calculation is distinct from the special consultation reported with 77370; document the unusual circumstance and the additional physics work.
Does 77370 include the physician’s interpretation?
CMS identifies 77370 as technical-component-only. Interpretation is covered by a separate code.
What documentation supports 77370?
Keep the radiation oncologist’s request and the physicist’s report. The report should identify the unusual treatment issue, the calculations or measurements performed, and the resulting findings.
Is 77370 reported for every complex radiation plan?
No. Complexity alone is not the service; the record should support a distinct, physician-requested physics consultation beyond routine planning or review.
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
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