Summary & Overview
CPT 77750: Intratumoral Radioelement Infusion with Hospital Admission and Follow-up
CPT code 77750 represents an intratumoral or intracavitary infusion/instillation of a radioelement solution intended to destroy tumor cells. The code is notable because it bundles hospital admission and a defined three-month postoperative follow-up period into a single procedural code, which has implications for facility billing, episode-based accounting, and care coordination. Nationally, this code applies to specialized oncology and interventional radiology services delivered in hospital settings and affects reimbursement workflows for complex oncologic interventions.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical intent and service context, payer coverage considerations, common modifiers, and the potential operational impacts of a bundled admission plus follow-up period. The publication outlines benchmarking approaches, coding and billing nuances, and clinical context for use of intratumoral radioelement therapy. Where specific payer policy detail or claim-level benchmarks are required, the report indicates whether those data were available; items not provided in the input are noted as "Data not available in the input."
Billing Code Overview
CPT code 77750 describes a procedure in which the provider infuses or instills a radioelement solution with the intent to destroy tumor cells. Service type: image-guided or catheter-based intratumoral radioelement infusion/instillation. Typical site of service: inpatient hospital care, as the code explicitly includes hospital admission and three months of follow-up care.
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Clinical & Coding Specifications
Clinical Context
A typical patient is an older adult with a primary hepatic or metastatic liver tumor referred for selective intra-arterial radioembolization using yttrium-90 (Y-90) microspheres to achieve tumoricidal radiation while sparing normal liver. The patient undergoes pre-procedure evaluation including history, labs (CBC, liver function tests, coagulation), cross-sectional imaging (contrast-enhanced CT or MRI) and angiographic mapping to assess hepatic arterial anatomy and identify extrahepatic vessels. On the day of treatment, the interventional radiology team admits the patient for the procedure, performs catheter-directed infusion of the radioelement solution into tumor-feeding arteries under fluoroscopic guidance, and monitors post-procedure recovery in PACU or an inpatient bed as indicated. The code 77750 encompasses hospital admission for the radioelement infusion and includes scheduled follow-up for up to three months to assess response, manage expected post-embolization syndrome, and monitor for complications such as radiation-induced liver disease or non-target radiation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing separately for the physician’s interpretation or procedural services distinct from the facility technical component. |