Summary & Overview
HCPCS Level II S9368: Home TPN >3L/Day with Pharmacy and Administrative Services
HCPCS Level II code S9368 represents a per diem home infusion therapy service for total parenteral nutrition (TPN) exceeding three liters per day, bundling administrative and professional pharmacy services, care coordination, and routine supplies and equipment. This code is significant nationally as home-based TPN supports medically complex patients while shifting care from inpatient settings to home, with implications for cost, access, and care coordination.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise outline of the code's clinical scope and service setting, payer coverage considerations, common billing modifiers, and areas where policy and payment guidance commonly influence claims processing. The publication also provides benchmarks and typical reimbursement context where available, highlights documentation elements that influence coverage decisions, and summarizes how S9368 interacts operationally with separately billed nursing visits and nonstandard drug components.
This overview is intended for a national audience of billing professionals, home infusion providers, pharmacy services, and policy analysts seeking a clear summary of what S9368 denotes, which services it bundles, and the practical billing distinctions important to claims and coverage workflows. Data not available in the input will be noted within relevant sections.
Billing Code Overview
HCPCS Level II code S9368 describes home infusion therapy for total parenteral nutrition (TPN) provided on a per diem basis for patients receiving more than three liters per day. The code covers administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment, including standard TPN formula components such as lipids and specialty amino acid formulas. It excludes drugs that are part of the standard formula if separately identified; nursing visits and separately coded drugs are billed separately.
Service type: Home infusion TPN services with comprehensive pharmacy and administrative support
Typical site of service: Patient's home (home health/home infusion setting)
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with severe malnutrition or intestinal failure requiring long-term home total parenteral nutrition (TPN) delivered at volumes greater than three liters per day. Example: a 58-year-old with short bowel syndrome after multiple bowel resections who is hemodynamically stable but unable to maintain adequate enteral intake. The patient is discharged from hospital once central venous access (peripherally inserted central catheter or tunneled central line) is placed and stabilized. A multidisciplinary team—physician (gastroenterologist or general surgeon), clinical pharmacist, home infusion nurse, and case manager—arranges home infusion services.
Home infusion pharmacy prepares individualized TPN formulations (including lipids and specialty amino acid solutions) and coordinates delivery of solutions, infusion pumps, tubing, and necessary supplies. Professional pharmacy services include medication review, sterile compounding, dose adjustments, drug compatibility checks, and ongoing monitoring. Nursing visits for catheter care and patient/family training are coded separately. Administrative services and care coordination include scheduling deliveries, training, and communication with the treating provider. The per diem billing under S9368 covers the pharmacy administrative and professional services, supplies, standard TPN formula components, and equipment for days when the patient receives more than three liters per day. Clinical workflow: inpatient discharge planning → home infusion referral → pharmacy intake and compounding plan based on orders and labs → delivery and setup at home → ongoing remote monitoring and periodic lab review with dose/formula adjustments, with nursing services billed separately for hands-on care.
Coding Specifications
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