Summary & Overview
HCPCS S9374: Home Infusion Hydration Therapy, Per Diem Services
HCPCS Level II code S9374 represents a per diem service for home infusion hydration therapy covering one liter per day and associated administrative and professional pharmacy services, including care coordination and supplies. This code matters nationally as patient-centered home infusion programs expand and payers refine coverage for bundled administrative and pharmacy coordination services separate from drug and nursing line items. Key payers included in this review are Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare.
Readers will find a concise explanation of what S9374 covers clinically, how it is typically used in home health and infusion pharmacy settings, and the significance of separating per diem administrative/pharmacy services from drug and nursing charges. The publication outlines payer coverage patterns and benchmark considerations, common billing modifiers, and practical documentation themes relevant to clinicians and billing professionals. When specific data points are not provided in the input, the text notes where data are unavailable and focuses on the clinical and billing context that guides utilization and coverage decisions nationally.
Billing Code Overview
HCPCS Level II code S9374 describes home infusion therapy for hydration, billed as a per diem administrative and professional service. The code covers hydration therapy at one liter per day, and includes administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment when drugs and nursing visits are billed separately.
Service Type: Home infusion hydration therapy — per diem administrative and pharmacy services
Typical Site of Service: Patient's home (home infusion setting)
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A 72-year-old patient with chronic kidney disease stage 4 and recurrent dehydration is discharged from the hospital but requires ongoing daily intravenous hydration at home. The home infusion provider establishes a per diem administrative and pharmacy services plan to deliver hydration therapy, supplying necessary tubing, IV poles, infusion pumps, and coordination of nursing visits; the actual intravenous fluids and nursing time are billed separately. The clinical workflow includes physician order for home hydration specifying volume (one liter per day), medical necessity documentation, prior authorization if required by the insurer, nursing assessment and initial home setup visit, daily or periodic nursing follow-up per plan of care, pharmacy preparation and oversight of supplies, care coordination with durable medical equipment suppliers as needed, and routine documentation of intake, response, and any adverse events in the medical record. Typical payors review medical necessity, frequency, and duration against the plan of care and may require chart notes, nursing flow sheets, and pharmacy documentation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased Procedural Services | When unusually complex administrative or coordination work beyond typical per diem occurs and documentation supports higher intensity. |