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CPT 96365: Initial Intravenous Infusion, Up to 1 Hour
CPT code 96365 denotes the initial intravenous infusion of a medication or other substance for up to one hour for prevention, treatment, or diagnosis. It captures a common, time-defined infusion encounter that is used across outpatient infusion centers, clinics, and emergency settings. Nationally, this code is central to billing for a broad range of therapies that require monitored IV administration, from hydration and electrolyte replacement to therapeutic drug infusions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical use cases, payer coverage considerations, and the code’s relationship to sequential and additional-hour infusion codes. The publication outlines typical sites of service, relevant ICD-10 clinical contexts where this code is applied, and nearby CPT codes used for additional infusion time or separate infusion episodes.
The piece equips clinicians, billing professionals, and policy analysts with concise benchmarks, coding relationships, and procedural context for 96365. It also highlights procedural adjacency to 96366 and 96367 for additional hours or sequential infusions, and summarizes common clinical diagnoses that often accompany initial IV infusion services. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 96365 describes the initial intravenous infusion of a medication or other substance administered by the provider for a period of up to one hour for the purpose of preventing, treating, or diagnosing a condition or disease. The service is an infusion therapy procedure delivered via intravenous access.
Service Type: Intravenous infusion, initial up to 1 hour
Typical Site of Service: Infusion center, outpatient clinic, emergency department, or other facility-based setting
National Reimbursement Benchmarks
National means show a clear split between Medicare and commercial benchmarks: Medicare’s mean is $70, while BUCA’s mean (as a proxy for average commercial) is $219.70, more than three times higher than Medicare. This gap highlights the premium commercial payers place on CPT 96365 relative to Medicare reimbursement.
Dispersion measured by the interquartile range (P75–P25) varies notably across payers. Blue Cross Blue Shield has the widest IQR at $129.90 ($354.30–$230.40), indicating substantial regional or contract variability, while Aetna is the tightest with an IQR of $67.50 ($139.40–$67.50). UnitedHealth Group and Cigna show moderate dispersion at $63.90 and $68.00 respectively, and BUCA’s IQR is $100.70 ($262.00–$161.30). Medicare’s IQR is narrow at $9 ($73–$64).