CPT code 77316: Brachytherapy plan2026 Medicare rate & RVUs in Illinois
Reports planning the dose distribution for a simple brachytherapy treatment, selected by the number of radioactive sources or calculation points.
Medicare pays $233.56–$257.38 for 77316 in the office in Illinois, from Rest Of Illinois to Suburban Chicago. 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 77316 covers
A radiation oncology team uses this service to calculate and document how radiation from implanted or applicator-based radioactive sources will be distributed in the treated area. The plan accounts for source geometry and the prescribed dose; a radiation oncologist typically directs or reviews the plan, with dosimetry and physics staff supporting its preparation. Examples include planning for intracavitary or interstitial brachytherapy, rather than external-beam treatment.
Select this level when the plan falls in the simple category of one to four sources or calculation points; use the intermediate or complex sibling when the applicable count is higher. The record should support the selected category and include the prescription and resulting dose distribution. CMS recognizes professional and technical components: modifier 26 identifies the professional interpretation, modifier TC identifies the technical work, and no modifier 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 77316 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
4 payment localities
$233.56 to $257.38
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | $254.91 | Unavailable |
| East St. Louis | $236.61 | Unavailable |
| Rest Of Illinois | $233.56 | Unavailable |
| Suburban Chicago | $257.38 | Unavailable |
How the 77316 rate is calculated
Each of 77316’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 · 77316
RVUs × geographic indexes × conversion factor
Work1.37
1.37 RVUs× 1.000 GPCI
Practice expense5.97
5.97 RVUs× 1.000 GPCI
Malpractice0.11
0.11 RVUs× 1.000 GPCI
Adjusted RVUs
7.4500
Conversion factor
$33.4009
Medicare rate
$248.84
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 77316
The CMS indicators that decide how 77316 is paid alongside other services.
CMS payment indicators · 77316
Brachytherapy 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
77316 without 26 · national office
$248.84
Brachytherapy plan
77316-26 · Professional component
$73.48
Pays only the interpretation and report.
77316 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 77317Brachytherapy plan
- Both cover brachytherapy planning, but 77317 is the intermediate level for a higher source or calculation-point count than the simple category.
- 77318Brachytherapy plan
- Use 77318 for the complex brachytherapy planning level; 77316 is limited to the simple category.
- 77306Radiation plan
- 77306 is for simple external-beam isodose planning. Use 77316 when the plan is for brachytherapy sources.
- 77300Dosimetry calculation
- 77300 reports a radiation dose calculation, not the brachytherapy isodose plan itself.
77316 billing questions
How is the simple level distinguished from the intermediate level?
The simple category covers one to four sources or calculation points. The intermediate sibling, 77317, is for plans with a higher count.
When should modifier 26 or TC be used?
Use modifier 26 for the professional interpretation and modifier TC for the technical component involving equipment and staff. Without either modifier, the claim represents the global service.
Does this code report placement of the brachytherapy sources?
No. It reports the planning work that calculates the dose distribution; source placement or applicator insertion is a separate service.
What documentation supports the simple level?
Document the brachytherapy plan, prescription, resulting dose distribution, and source or calculation-point count supporting the simple category.
Should this be used for an external-beam isodose plan?
No. This code is for brachytherapy planning. External-beam isodose planning is represented by codes such as 77306 or 77307, depending on the plan's 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
Show the CMS file lines behind this rate
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