77778 Apply interstit radiat complicated
Also known as: Interstitial brachytherapy complete, Complete interstitial therapy
Application of interstitial radioactive material with complete complexity.
In Plain Language
Radioactive needles placed in tissue for complete treatment
Clinical Context
Complete interstitial brachytherapy treatment delivery. Includes source placement, dosimetry, and removal.
RVU Breakdown
| Work RVU | 8.56 |
| Total RVU | 8.56 |
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 8.56, this code ranks in the 100th percentile among Radiology codes — 10.6x the median (0.81). The highest wRVU in this category is 11.57.
Specialties
Frequently Asked Questions
What is CPT code 77778?
CPT 77778 (Apply interstit radiat complicated) is a Radiology code. Application of interstitial radioactive material with complete complexity.
Who uses CPT code 77778?
CPT 77778 is used by Radiation Oncology. Complete interstitial brachytherapy treatment delivery. Includes source placement, dosimetry, and removal.
When is CPT 77778 used?
Complete interstitial brachytherapy treatment delivery. Includes source placement, dosimetry, and removal.
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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.