$97.79
77437 reports superficial radiation delivery at 150 kV or less. 77439 is an add-on for ultrasound-based placement guidance and is not a substitute for delivery.
On this page
CMS RVU26D · Effective 2026-10-01
77439 Radiation image guidance Medicare reimbursement rates in Oklahoma
This add-on reports ultrasound image guidance for placement during surface radiation therapy, alongside the applicable primary radiation delivery service. Compare 77439 office and facility rates across CMS payment localities in Oklahoma.
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 77439 in Oklahoma?
Oklahoma 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
$15.39
1 of 1 localities have a supported rate.
Payment area: Oklahoma
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 77439: Ultrasound-guided surface radiation placement
This add-on reports ultrasound image guidance for placement during surface radiation therapy, alongside the applicable primary radiation delivery service.
This service covers ultrasound-based image guidance used to place or position equipment for surface radiation therapy. It is associated with treatment delivery for superficial or orthovoltage radiation, including treatment of cutaneous lesions. A radiation oncologist or other qualified clinician may perform and interpret the imaging, with technical staff and ultrasound equipment supporting the technical portion in a radiation oncology setting.
Report 77439 only with its primary radiation treatment service; select the primary delivery code based on the treatment type, such as superficial treatment at 150 kV or less versus orthovoltage treatment above 150 through 500 kV. The record should support the ultrasound-guided placement and the imaging service provided. CMS identifies professional and technical components: modifier 26 reports interpretation, modifier TC reports equipment and staff, and no modifier represents the global service. As an add-on, payment is within the primary procedure's global period.
CMS billing rules for 77439
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
- 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 RVU0.30 · 63%
- Practice expense (office) RVU0.18 · 38%
- Malpractice RVU0.00 · 0%
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.
77439 compared with similar codes
Office rates for Oklahoma, from the same CMS release.
$98.69
77438 reports orthovoltage delivery above 150 through 500 kV. Use 77439 for the associated ultrasound placement guidance, not to represent the delivery itself.
77417
No office rateTher radiology port image(s)
77417 reports therapeutic radiology port imaging. 77439 concerns ultrasound-based placement guidance for surface radiation treatment.
Compare 77439 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
Oklahoma →
Office / nonfacility
$15.39
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 77439 in Oklahoma.
PPRRVU2026_Oct_nonQPP.csv
9,113
- Code
- 77439
- Physician work
- 0.30
- Practice expense
- 0.18
- Malpractice
- 0.00
GPCI2026.csv
86
- Locality
- Oklahoma
- Physician work
- 1.000
- Practice expense
- 0.893
- Malpractice
- 0.777
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.30 | × 1.000 | 0.3000 |
| Practice expense | 0.18 | × 0.893 | 0.1607 |
| Malpractice | 0.00 | × 0.777 | 0.0000 |
| Total RVUs | 0.4607 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Oklahoma$15.39
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.3 | 1 |
| Practice expense | 0.18 | 0.893 |
| Malpractice | 0 | 0.777 |
(0.3 × 1 + 0.18 × 0.893 + 0 × 0.777) × $33.4009 = $15.39
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.
77439 billing questions
Which primary service should accompany 77439?
Report it with the applicable primary surface radiation delivery service. The primary code depends on the treatment type, including whether the radiation is superficial or orthovoltage.
Can 77439 be reported by itself?
No. CMS identifies it as an add-on that must be billed with a primary procedure, and payment falls within that procedure's global period.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the technical service, including equipment and staff. Reporting without a modifier represents the global service.
What documentation supports this service?
Document the ultrasound-guided placement performed and the imaging interpretation when billing the professional component. The record should also identify the accompanying surface radiation treatment service.
Is 77439 the same as radiation port imaging?
No. 77439 describes ultrasound-based placement guidance for surface radiation therapy; 77417 describes therapeutic radiology port imaging.
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.
9,11077436,TC,Surf radj ther tx planning,A,,0.00,1.09,,1.09,NA,0.01,1.10,1.10,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11177437,,Surf radj ther supfc<=150kv,A,,0.00,3.27,,3.27,NA,0.01,3.28,3.28,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11277438,,Surf rad thr orthvlt>150-500,A,,0.00,3.30,,3.30,NA,0.01,3.31,3.31,3,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11377439,,Surf rad thr img gdn us plmt,A,,0.30,0.18,,0.18,NA,0.00,0.48,0.48,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11477439,26,Surf rad thr img gdn us plmt,A,,0.30,0.18,,0.18,,0.00,0.48,0.48,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11577439,TC,Surf rad thr img gdn us plmt,B,,0.00,0.00,,0.00,NA,0.00,0.00,0.00,1,ZZZ,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
9,11677469,,Io radiation tx management,A,,5.61,1.93,NA,1.93,,0.44,7.98,7.98,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8311502,NC,00,NORTH CAROLINA,1.000,0.933,0.639
8403302,ND,01,NORTH DAKOTA**,1.000,1.000,0.406
8515202,OH,00,OHIO,1.000,0.913,1.008
8604312,OK,00,OKLAHOMA,1.000,0.893,0.777
8702302,OR,01,PORTLAND,1.016,1.111,0.744
8802302,OR,99,REST OF OREGON,1.000,0.996,0.703
8912502,PA,01,METROPOLITAN PHILADELPHIA,1.018,1.041,1.193