CPT code 77317: Brachytherapy plan, intermediate complexity2026 Medicare rate & RVUs

Medicare pays $325.99 for 77317 nationally in the office. Local office rates run $286.92–$446.41.

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

What 77317 covers

This code represents intermediate-level isodose planning for brachytherapy: calculating and reviewing how radiation from implanted or applicator-positioned sources is distributed through the target and nearby tissues. It is used in radiation oncology, including treatments such as intracavitary gynecologic brachytherapy or interstitial implants. A radiation oncologist directs the prescription, while a medical physicist or dosimetrist may perform the planning calculations.

Select this level when the documented work meets the intermediate category in the brachytherapy planning scale, rather than the simple or complex level. The record should support the source or applicator arrangement, prescribed dose, dose-distribution calculations, and plan review. CMS recognizes professional and technical components: modifier 26 identifies the professional interpretation, modifier TC identifies the technical service, and billing without either 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 77317 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

77317 rates by state

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

How the 77317 rate is calculated

Each of 77317’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 77317

The CMS indicators that decide how 77317 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

77317 compared with similar codes

How to choose

77316Brachytherapy planSimple source or point count

Both cover brachytherapy isodose planning, but 77316 is the simple level; 77317 represents intermediate planning.

77318Brachytherapy planComplex isodose plan

Both cover brachytherapy isodose planning, but 77318 is the complex level; use 77317 for documented intermediate planning.

77307Isodose planningComplex teletherapy plan

77307 is a complex isodose plan for teletherapy. Code 77317 is for intermediate brachytherapy planning around radioactive sources.

Codes related to 77317

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