CPT code 77316: Brachytherapy plan, simple source or point count2026 Medicare rate & RVUs

Medicare pays $248.84 for 77316 nationally in the office. Local office rates run $218.94–$340.30.

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

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

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

109 of 109 payment localities

77316 rates by state

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

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.

Payment rules and modifiers for 77316

The CMS indicators that decide how 77316 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

77316 compared with similar codes

How to choose

77317Brachytherapy planIntermediate complexity

Both cover brachytherapy planning, but 77317 is the intermediate level for a higher source or calculation-point count than the simple category.

77318Brachytherapy planComplex isodose plan

Use 77318 for the complex brachytherapy planning level; 77316 is limited to the simple category.

77306Radiation planSimple teletherapy plan

77306 is for simple external-beam isodose planning. Use 77316 when the plan is for brachytherapy sources.

77300Dosimetry calculationBasic, per calculation

77300 reports a radiation dose calculation, not the brachytherapy isodose plan itself.

Codes related to 77316

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