Summary & Overview
CPT 78804: Multiday Whole-Body Nuclear Imaging with Gamma Tracer
CPT code 78804 covers multi-day whole-body nuclear medicine imaging using a gamma-emitting radiopharmaceutical tracer to detect and localize tumors, inflammatory processes, or radiopharmaceutical distribution. The code specifically represents imaging performed across two or more days and may include vascular flow and blood pool imaging for cardiac assessment when performed. This modality is important nationally for staging, restaging, and whole-body assessment in oncology and certain inflammatory conditions, and it supports clinical decision-making where whole-body tracer kinetics are needed.
Key payers in the national analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns, coding and billing considerations, and where available, utilization benchmarks and common service settings.
Readers will learn the clinical context and service definition for CPT code 78804, typical sites of service, and the practical implications for billing and administrative workflows. The report summarizes national payer coverage themes, common modifier usage (where applicable), and how this code fits into multi-day nuclear medicine protocols. Data not provided in the input (including specific payer policy details, associated taxonomies, and ICD-10 pairings) are noted as unavailable in source material.
Billing Code Overview
CPT code 78804 describes the use of a gamma-emitting radiopharmaceutical tracer for diagnostic whole-body imaging performed over two or more days. The procedure includes imaging to detect and localize tumors, inflammatory processes, or radiopharmaceutical distribution and may include vascular flow and blood pool imaging when used to assess cardiac blood pumping function.
Service type: Nuclear medicine diagnostic imaging (multi-day whole-body scintigraphy)
Typical site of service: Hospital outpatient imaging center or nuclear medicine department
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a history of metastatic neuroendocrine tumor presents for diagnostic whole-body nuclear medicine imaging using a gamma-emitting radiotracer to localize disease and assess biodistribution over multiple days. The referring oncologist requests imaging to identify primary or recurrent tumor foci, evaluate for somatostatin receptor–positive lesions, and guide therapy planning. The patient arrives at an outpatient nuclear medicine suite on day 1 for tracer injection and initial imaging (planar and SPECT as indicated), returns for delayed whole-body images on day 2, and possibly day 3 when tracer kinetics require extended imaging. The clinical workflow includes: scheduling and preauthorization; verification of patient identity and indication; radiopharmaceutical preparation and dose calculation by the nuclear pharmacy; tracer administration and documentation of lot number and activity; vascular flow and blood pool imaging if cardiac function assessment is concurrently indicated; acquisition of whole-body planar and SPECT/CT images on sequential days; image reconstruction and interpretation by a board-certified nuclear medicine physician; generation of a diagnostic report including anatomic localization and comparison with prior studies; and transmission of results to the referring oncologist. Typical sites of service are an outpatient hospital-based nuclear medicine department or an ambulatory imaging center equipped for multi-day radiopharmaceutical administration and whole-body gamma camera imaging.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component |