Summary & Overview
CPT 78800: Planar Nuclear Medicine for Single–Area Tumor/Inflammation Localization
CPT code 78800 represents a planar nuclear medicine study using a gamma–emitting radiotracer to diagnose and localize a tumor, inflammatory process, or radiopharmaceutical distribution in a single body area. The code covers single–day, two–dimensional imaging of regions such as the head, neck, chest, or pelvis and may include vascular flow and blood pool imaging when cardiac pumping assessment is performed. As a foundational nuclear medicine service, it supports disease localization, staging, and management decisions across oncology, infection imaging, and cardiology.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical and service context for CPT code 78800, typical sites of service, and how the procedure is used in diagnostic workflows. The publication also summarizes common billing considerations, frequently used modifiers (provided in the input), and placement among related imaging services. Where specific data elements are not provided, the text notes that those items are not available in the input.
This national overview is intended for revenue cycle, coding, and clinical staff who need clear, concise guidance on the clinical role and billing identity of CPT code 78800, and what to expect when this planar nuclear medicine study is ordered or billed.
Billing Code Overview
CPT code 78800 describes a diagnostic nuclear medicine procedure in which a gamma–emitting radioactive tracer is administered and planar (two–dimensional), single–day imaging is performed to diagnose and localize a tumor, inflammatory process, or radiopharmaceutical agent distribution within a single body area. The description includes vascular flow and blood pool imaging when performed to assess cardiac pumping function.
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Service type: Nuclear medicine imaging, planar (single–day) of a single body area
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Typical site of service: Hospital outpatient department, freestanding imaging center, or clinic for targeted single–area imaging such as the head, neck, chest, or pelvis
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a history of a suspicious pelvic mass on ultrasound is referred for planar nuclear medicine imaging to localize and characterize tracer uptake. The nuclear medicine team administers a gamma-emitting radiopharmaceutical and obtains single-day planar images of the pelvis (two-dimensional) to assess tumor localization and distribution. Vascular flow and blood pool imaging are included if cardiac function assessment is incidentally required during the same single-area study. The workflow includes: referral and clinical indication review; radiopharmaceutical preparation and administration; patient positioning and planar image acquisition of the single targeted area; image processing and interpretation by a board-certified nuclear medicine physician; generation of a written report; and communication of results to the referring clinician for management planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing separately for physician interpretation only for the imaging study |
TC | Technical component | When billing only for facility/instrumentation and radiopharmaceutical costs |