HCPCS Level II code S9325 represents the per diem administrative and professional pharmacy services that support home infusion therapy for pain management. This code captures care coordination, pharmacy oversight, and necessary supplies and equipment while drugs and nursing visits are billed separately. It is used when a payer needs to distinguish administrative and non-drug/non-nursing components of home infusion pain therapy and should not be reported with S9326, S9327, or S9328.

Key payers in this national overview include Aetna, Blue Cross Blue Shield plans, Cigna Health, UnitedHealthcare, and Medicare. Readers will find concise coverage of what S9325 represents clinically and operationally, common payer coverage patterns, and the billing context where the code is applied. The publication provides benchmarks for per diem administrative billing where available, summary guidance on coding relationships with drug and nursing service lines, and policy considerations relevant to payers and administrative vendors. Where source data are not provided, the report flags unavailable fields and focuses on the code’s intended use and service setting to inform billing, claims editing, and benefit design discussions at a national level.