Summary & Overview
HCPCS S9326: Home Continuous Pain Infusion, Per-Diem
HCPCS Level II code S9326 denotes a per-diem administrative and professional pharmacy services bundle supporting continuous (24+ hour) home infusion for pain management, excluding the drugs and nursing visits which are billed separately. Nationally, this code matters as home-based continuous infusion programs expand for complex pain control, enabling care outside institutional settings and affecting payer coverage policies, network arrangements, and care coordination models. Key payers examined include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise explanation of what S9326 covers, typical sites of service, and how this code fits into the continuum of home infusion billing. The publication outlines common modifiers and billing considerations, summarizes payer coverage patterns, and provides clinical context for when a continuous pain infusion bundle is used. It also highlights where data is available and where input is missing. This resource is intended for billing managers, pharmacy services, home health administrators, and policy analysts seeking a practical reference on coding and payer interactions for continuous home infusion pain management.
Billing Code Overview
HCPCS Level II code S9326 describes home infusion therapy, continuous (twenty-four hours or more) pain management infusion; administrative services, professional pharmacy services, care coordination and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem. This code represents a bundled per-diem charge for the non-drug and non-nursing components that support continuous, around-the-clock infusion for pain management delivered in the home setting.
Service Type: Home infusion therapy — continuous pain management infusion (24+ hours)
Typical Site of Service: Patient home / home health setting
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with metastatic cancer experiencing intractable, continuous nociceptive and neuropathic pain is discharged from the hospital to home with an ambulatory infusion pump for continuous 24-hour opioid or adjunct analgesic infusion. The patient has intermittent home nursing visits for pump setup, catheter site assessment, and medication changes; pharmacy provides compounding, dispensing, and coordination of supplies. The workflow includes: initial inpatient consultation and prescription for home infusion; prior authorization and care coordination with the payor; home nursing visit for pump initiation, education, and dressing; daily or PRN nursing assessments; pharmacy delivery of compounded infusion bags and necessary tubing/catheters; documentation of dose changes and adverse events; and periodic clinician follow-up (telehealth or clinic) to assess efficacy and need for ongoing therapy. Billing uses S9326 as the per diem administrative and professional pharmacy services charge; actual drug costs and nursing visits are billed separately under appropriate HCPCS/CPT codes and provider claim lines.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier — standard reporting | Use when no additional modifier condition applies. |