Billing code 77373: SBRT deliveryMedicare rate & RVUs in Delaware
Reports image-guided stereotactic radiation delivery to one or more body lesions per fraction during a course of no more than five fractions.
Medicare pays $966.16 for 77373 in the office in Delaware (Delaware). 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.
On this page 9 sections
What 77373 covers
Stereotactic body radiation therapy (SBRT) delivers precisely targeted, high-dose radiation to tumors outside the brain, commonly in the lung, liver, or spine. Radiation oncologists prescribe and oversee treatment, while radiation therapists deliver each fraction using specialized equipment and image guidance to position and verify the target. The service is performed in a radiation oncology treatment setting.
Report 77373 once for each treatment fraction, whether one or multiple lesions are treated in that fraction; the code describes a course of no more than five fractions. The treatment record should support the treated target or targets, fraction date, image-guided setup, and completed delivery. Image guidance is included in the service. CMS treats this as a technical-component-only code; a separate code covers interpretation. The CMS fee schedule assigns no physician-work value to this code.
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.
77373 in Delaware
| Payment locality | Office | Facility |
|---|---|---|
| Delaware | $966.16 | Unavailable |
How the 77373 rate is calculated
Each of 77373’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 · 77373
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 0.00Practice expense 29.05Malpractice 0.25
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 77373
The CMS indicators that decide how 77373 is paid alongside other services.
CMS payment indicators · 77373
SBRT delivery
| 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. |
77373 compared with similar codes
Compare codes
77373 vs 77371 vs 77372 vs 77435 vs 77301: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 77371Srs multisource
- Use 77371 for stereotactic radiosurgery delivery to intracranial targets; 77373 describes SBRT delivery to body targets.
- 77372Stereotactic radiosurgery
- 77372 is linear-accelerator-based stereotactic radiosurgery for intracranial targets. Use 77373 for stereotactic treatment delivery to body targets.
- 77435SBRT management
- 77435 reports physician treatment management for an SBRT course; 77373 reports the technical delivery of each treatment fraction.
- 77301IMRT planning
- 77301 describes IMRT treatment planning. It is planning work, not the image-guided SBRT fraction delivery reported with 77373.
77373 billing questions
Is 77373 reported per lesion or per fraction?
Report it per fraction, not once for each lesion. The code covers treatment of one or more lesions in that fraction.
What documentation supports a 77373 claim?
The treatment record should identify the target or targets, the date and fraction delivered, image-guided setup, and completion of treatment delivery.
Can image guidance be billed separately with 77373?
Image guidance is included in 77373, so it should not be separately reported for the same SBRT delivery.
Does 77373 include the physician's interpretation?
No. CMS classifies 77373 as technical-component-only; a separate code covers interpretation.
How does 77373 differ from 77371 and 77372?
77373 is for stereotactic radiation treatment of body targets. Codes 77371 and 77372 describe stereotactic radiosurgery delivery for intracranial targets.
Is 77373 the same service as SBRT treatment management?
No. 77373 reports treatment delivery by fraction; 77435 reports physician treatment management for the SBRT course.
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
Fee sheets
Put 77373 and the rest of your codes on one sheet
Build a fee sheet from your own code list at your locality, put your payer contracts beside Medicare, and see what changed each quarter.
Build my fee sheetOr price your code list free →