CPT code 77307: Isodose planning, complex teletherapy plan2026 Medicare rate & RVUs in Michigan
Report complex teletherapy isodose planning when an external-beam radiation treatment plan requires the documented complexity of this planning level.
Medicare pays $274.38–$287.26 for 77307 in the office in Michigan, from Rest of Michigan to Detroit, MI. 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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On this page 9 sections
What 77307 covers
This service develops a dose-distribution plan for external-beam radiation therapy. The radiation oncologist establishes the prescription and treatment approach, with a medical dosimetrist or radiation physicist commonly carrying out planning calculations and preparing the isodose distribution. The plan uses treatment and anatomic information to shape how radiation beams cover the target while limiting exposure to nearby normal tissue. It is performed as part of radiation oncology treatment planning, rather than during delivery of each treatment fraction.
Select the complex planning level based on the documented features of the teletherapy plan, not simply the diagnosis or body site. The record should support the plan’s beam arrangement and complexity, dose calculations, and physician review. Basic dosimetry calculation is included in this planning service. CMS recognizes separately priced professional and technical portions: report modifier 26 for the professional interpretation and modifier TC for equipment and staff; without either modifier, the claim represents the global service.
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 77307 pays more and less in Michigan
| Payment locality | Office | Facility |
|---|---|---|
| Detroit, MI | $287.26 | Unavailable |
| Rest of Michigan | $274.38 | Unavailable |
How the 77307 rate is calculated
Each of 77307’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 · 77307
RVUs × geographic indexes × conversion factor
Work2.83
2.83 RVUs× 1.000 GPCI
Practice expense5.70
5.70 RVUs× 1.000 GPCI
Malpractice0.16
0.16 RVUs× 1.000 GPCI
Adjusted RVUs
8.6900
Conversion factor
$33.4009
Medicare rate
$290.25
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 77307
The CMS indicators that decide how 77307 is paid alongside other services.
CMS payment indicators · 77307
Isodose planning, complex teletherapy plan
| 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 | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
77307 without 26 · national office
$290.25
Isodose planning, complex teletherapy plan
77307-26 · Professional component
$151.97
Pays only the interpretation and report.
77307 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 77306Radiation planSimple teletherapy plan
- Both cover teletherapy isodose planning; 77306 is the simple level, while 77307 is selected when the documented plan meets complex-level criteria.
- 77301IMRT planningDose optimization and volume analysis
- 77301 is for IMRT treatment planning. Use 77307 for complex teletherapy isodose planning when the service is not the IMRT planning service.
- 77300Dosimetry calculationBasic, per calculation
- 77300 describes a basic dosimetry calculation, while 77307 covers the complex isodose plan and includes its basic dosimetry calculation.
- 77318Brachytherapy planComplex isodose plan
- 77318 is complex isodose planning for brachytherapy; 77307 is complex isodose planning for external-beam teletherapy.
77307 billing questions
How is 77307 distinguished from 77306?
Both describe teletherapy isodose planning, but 77307 is the complex level and 77306 is the simple level. Use the documented planning features and applicable CPT criteria to select the level.
Can 77300 be reported for the dosimetry calculation?
The basic dosimetry calculation is included in 77307. Do not separately report 77300 for that same calculation.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the technical portion involving equipment and staff. A claim without either modifier represents the global service.
Is 77307 used for IMRT planning?
Use 77301 for an IMRT treatment plan. Code 77307 describes complex teletherapy isodose planning rather than the IMRT planning service.
What documentation supports the complex planning level?
Document the treatment prescription, planning method and beam arrangement, dose calculations and distribution, and physician review. The record should show why the plan meets the complex level.
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
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