CPT code 77307: Isodose planning, complex teletherapy plan2026 Medicare rate & RVUs

Medicare pays $290.25 for 77307 nationally in the office. Local office rates run $260.82–$382.32.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

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

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

77307 rates by state

Office rate range in each state. Select a state to see its payment localities.

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.

Payment rules and modifiers for 77307

The CMS indicators that decide how 77307 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

77307 compared with similar codes

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.

Codes related to 77307

Related codes aren’t interchangeable: bill the code that matches the service performed.

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

Open CMS sourceHow we calculate rates