CPT code 78261 denotes a radionuclide imaging study of the gastric mucosa performed after intravenous administration of a radiopharmaceutical. Clinically, the procedure is used to identify sources of acute gastrointestinal bleeding and to detect conditions such as Meckel’s diverticulum or gastric mucosal abnormalities, and it is commonly performed in pediatric and hospital-based settings. Nationally, accurate coding for this nuclear medicine study matters for appropriate clinical documentation, cross-specialty coordination, and consistent claims processing.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context and typical service settings, common billing modifiers and administrative considerations, and guidance on where to look for payer-specific coverage policies. The publication summarizes benchmarks and policy updates when available and highlights areas where data is not provided in the input.

This summary is intended to orient clinicians, coding professionals, and policy analysts to the purpose and typical use of CPT code 78261, the primary sites where the service is delivered, and the major commercial and public payers relevant to national billing and policy discussions. Data not available in the input is noted where applicable.