77789 Apply surf ldr radionuclide
Also known as: Surface LDR brachytherapy, Mold therapy
Application of surface low-dose-rate brachytherapy using radionuclide.
In Plain Language
Low-dose radioactive treatment placed on skin
Clinical Context
Low-dose-rate surface brachytherapy using molds or applicators. Used for eyelid, lip, and other surface malignancies.
RVU Breakdown
| Work RVU | 1.11 |
| Total RVU | 1.11 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
Radiology codes require a written order, clinical indication, and a formal interpretation report. This code has a 0-day global period, meaning pre- and post-operative E&M visits are billable separately on the same day. The professional component (modifier -26) and technical component (modifier -TC) may be billed separately.
How This Code Compares
With a work RVU of 1.11, this code ranks in the 63rd percentile among Radiology codes — 1.4x the median (0.81). The highest wRVU in this category is 11.57.
Specialties
Frequently Asked Questions
What is CPT code 77789?
CPT 77789 (Apply surf ldr radionuclide) is a Radiology code. Application of surface low-dose-rate brachytherapy using radionuclide.
Who uses CPT code 77789?
CPT 77789 is used by Radiation Oncology. Low-dose-rate surface brachytherapy using molds or applicators. Used for eyelid, lip, and other surface malignancies.
When is CPT 77789 used?
Low-dose-rate surface brachytherapy using molds or applicators. Used for eyelid, lip, and other surface malignancies.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.