CPT code 79440 denotes intra-articular injection of a radioactive agent (radiosynoviorthesis) to treat synovial inflammation. This targeted therapeutic procedure is used in rheumatologic and orthopedic care to reduce pain and inflammation inside affected joints when other conservative treatments are insufficient. Nationally, the code matters for payers and providers because it represents a specialized, procedure-based therapy with implications for site-of-service designation, prior authorization, and coverage policy.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the procedure, typical sites of service, common modifiers used in billing, and the payer landscape considered in this analysis. The publication outlines benchmarks and reimbursement considerations, summarizes relevant policy updates impacting coverage and utilization management, and clarifies coding implications for procedural documentation and claims submission.

This summary is intended for billing managers, revenue cycle professionals, and clinicians involved in procedural care planning who need a concise reference to the clinical intent and payer relevance of CPT code 79440 at a national level.