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.