Summary & Overview
CPT 78799: Unlisted Diagnostic Nuclear Medicine Procedure, Genitourinary
CPT code 78799 designates an unlisted diagnostic nuclear medicine procedure of the genitourinary system and is used when no specific CPT code describes the study performed. This code is important nationally because it captures atypical or evolving nuclear medicine techniques for genitourinary imaging that fall outside established codes, ensuring such services can be reported and considered by payers.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for genitourinary nuclear medicine, guidance on documentation expectations for unlisted procedures, and benchmarking considerations for how major payers and Medicare typically handle unlisted CPT submissions.
The publication outlines what to expect in terms of claim submission elements, required supporting documentation, and common billing pitfalls specific to 78799. It also summarizes policy elements that influence coverage and reimbursement decisions for unlisted nuclear medicine procedures, and highlights operational implications for hospital and outpatient imaging departments. Data not provided in the input—such as specific ICD-10 pairings, payer-specific pricing, and taxonomies—is identified as not available in the input.
Billing Code Overview
CPT code 78799 is an unlisted diagnostic nuclear medicine procedure for the genitourinary system. It is used to report diagnostic nuclear medicine studies of the genitourinary tract when there is no more specific CPT code available.
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Service type: Diagnostic nuclear medicine procedure focused on the genitourinary system
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Typical site of service: Nuclear medicine departments in hospitals, outpatient imaging centers, and specialty diagnostic facilities
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old adult referred from urology for a diagnostic nuclear medicine genitourinary study after complex urinary tract symptoms and inconclusive ultrasound and CT imaging. The patient presents with intermittent hematuria, suspected vesicoureteral reflux or obstructive uropathy, or a suspected renal functional asymmetry. The nuclear medicine team confirms clinical indication, reviews recent serum creatinine and allergy history, obtains informed consent, and prepares the radiotracer. The study is performed in an outpatient imaging center or hospital radiology/nuclear medicine department. The nuclear medicine technologist administers the radiopharmaceutical intravenously, acquires dynamic and/or static scintigraphic images of the kidneys and urinary tract per protocol, and documents radiotracer dose and timing. The interpreting nuclear medicine physician reviews images, quantifies differential renal function and drainage patterns, and issues a signed report with findings and interpretation. The report is routed to the referring urologist or nephrologist for management decisions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing physician interpretation separate from technical component |
TC |