HCPCS Level II code S9377 represents a per-diem payment for home infusion hydration therapy exceeding three liters per day, covering administrative services, professional pharmacy services, care coordination, and supplies (with drugs and nursing visits billed separately). This code matters nationally as home infusion expands care options for patients requiring high-volume hydration outside institutional settings, affecting reimbursement pathways for providers, pharmacy benefit managers, and payers.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of what S9377 encompasses, typical sites of service, and the role of separate billing for drugs and nursing services. The publication outlines common modifiers used with this service, payer coverage patterns, and operational considerations for billing and care coordination. It also summarizes implications for pharmacy services and supply handling tied to per-diem billing.

This summary provides a national perspective on clinical context and billing structure rather than state-specific policy. Data not provided in the input — including associated taxonomies, specific ICD-10 diagnoses, related codes, and detailed payer-specific reimbursement rates — are noted as not available.