$2,048.58–$2,293.68
77301 covers planning for intensity-modulated radiation therapy. Use 77387 for image localization, tracking, or patient positioning during treatment delivery.
On this page
CMS RVU26D · Effective 2026-10-01
77387 Radiation guidance Medicare reimbursement rates in Massachusetts
Reports image-based localization, tracking, and patient positioning during radiation treatment delivery, including acquisition and interpretation of the treatment images. Compare 77387 office and facility rates across CMS payment localities in Massachusetts.
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 77387 in Massachusetts?
Massachusetts 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
$37.24–$39.69
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
About 77387: Image guidance for radiation delivery
Reports image-based localization, tracking, and patient positioning during radiation treatment delivery, including acquisition and interpretation of the treatment images.
This service uses imaging during radiation treatment to localize the target, track its position, and align the patient before or during delivery. Radiation therapists and other treatment staff acquire images using the treatment system; the radiation oncologist or another qualified professional interprets them and determines whether positioning or alignment needs adjustment. Examples include on-board imaging used to verify setup for a treatment fraction.
Report the service for image guidance performed as part of treatment delivery, not for creating the radiation dose plan or calculating dose. Documentation should identify the images acquired, the localization or positioning assessment, and the interpretation or resulting alignment decision. CMS recognizes professional and technical components: modifier 26 identifies interpretation, modifier TC identifies equipment and staff, and reporting without either modifier represents the global service. The CMS physician fee schedule separately prices both modifier components.
CMS billing rules for 77387
- 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 RVU0.68 · 62%
- Practice expense (office) RVU0.38 · 35%
- Malpractice RVU0.03 · 3%
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.
77387 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
$69.61–$76.69
77300 is a radiation dose calculation service. It does not describe image acquisition and positioning guidance during treatment delivery.
77417
No office rateTher radiology port image(s)
77417 describes therapeutic radiology port films. 77387 is used for image guidance that supports localization, tracking, or positioning for treatment.
Compare 77387 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
Metropolitan Boston →
Office / nonfacility
$39.69
Facility
Unavailable
Rest Of Massachusetts →
Office / nonfacility
$37.24
Facility
Unavailable
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77387 billing questions
Is 77387 reported for each treatment image or each treatment session?
It describes image guidance for radiation delivery, including image acquisition and interpretation. Document the guidance service performed for the treatment session rather than treating each image as a separate service.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the technical service involving equipment and staff. Without either modifier, the claim represents the global service.
How is 77387 different from 77301?
77387 covers image-based localization and positioning during treatment delivery. 77301 is for planning an intensity-modulated radiation therapy course, not guidance performed during a treatment session.
Is image guidance included in the radiation treatment delivery service?
77387 identifies the image-guidance service separately from treatment delivery. The record should support that guidance was performed, with images acquired and interpreted as applicable to the components billed.
How does 77387 differ from portal imaging?
77387 describes image guidance used to localize, track, or position the patient for treatment. 77417 describes therapeutic radiology port films, a distinct imaging 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.
9,08877371,,Srs multisource,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,08977372,,Srs linear based,A,,0.00,27.75,,27.75,NA,0.21,27.96,27.96,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,09077373,,Strtctc bdy rad ther tx dlvr,A,,0.00,29.05,,29.05,NA,0.25,29.30,29.30,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,09177387,,Guidance for radj tx dlvr,A,,0.68,0.38,,0.38,NA,0.03,1.09,1.09,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,09277387,26,Guidance for radj tx dlvr,A,,0.68,0.38,,0.38,,0.03,1.09,1.09,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,09377387,TC,Guidance for radj tx dlvr,B,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
9,09477399,,Unlisted px med radj physics,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